diff --git a/.env.dev b/.env.dev
index 2e883414365a1c83a982887c70bb272d04398760..3f904078c36d0a5fa1392356d83a5e1e0d493204 100644
--- a/.env.dev
+++ b/.env.dev
@@ -1,9 +1,11 @@
 API_AUTHENTICATION_REQUIRED=True
 RAVEN_ENABLED=false
 RAVEN_DSN=https://44332e9fdd3d42879c7d35bf8562c6a4:0062dc16a22b41679cd5765e5342f716@sentry.eliotberriot.com/5
-DJANGO_ALLOWED_HOSTS=localhost,nginx
+DJANGO_ALLOWED_HOSTS=.funkwhale.test,localhost,nginx,0.0.0.0,127.0.0.1
 DJANGO_SETTINGS_MODULE=config.settings.local
 DJANGO_SECRET_KEY=dev
 C_FORCE_ROOT=true
-FUNKWHALE_URL=http://localhost
+FUNKWHALE_HOSTNAME=localhost
+FUNKWHALE_PROTOCOL=http
 PYTHONDONTWRITEBYTECODE=true
+WEBPACK_DEVSERVER_PORT=8080
diff --git a/README.rst b/README.rst
index 2d5d2011d2f368332458bd567284e2121a4dfca8..747a1e22036d723cacc3c61760371fbef4f83857 100644
--- a/README.rst
+++ b/README.rst
@@ -206,3 +206,80 @@ Typical workflow for a merge request
 6. Push your branch
 7. Create your merge request
 8. Take a step back and enjoy, we're really grateful you did all of this and took the time to contribute!
+
+
+Working with federation locally
+-------------------------------
+
+To achieve that, you'll need:
+
+1. to update your dns resolver to resolve all your .dev hostnames locally
+2. a reverse proxy (such as traefik) to catch those .dev requests and
+   and with https certificate
+3. two instances (or more) running locally, following the regular dev setup
+
+Resolve .dev names locally
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If you use dnsmasq, this is as simple as doing::
+
+    echo "address=/test/172.17.0.1" | sudo tee /etc/dnsmasq.d/test.conf
+    sudo systemctl restart dnsmasq
+
+If you use NetworkManager with dnsmasq integration, use this instead::
+
+    echo "address=/test/172.17.0.1" | sudo tee /etc/NetworkManager/dnsmasq.d/test.conf
+    sudo systemctl restart NetworkManager
+
+Add wildcard certificate to the trusted certificates
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Simply copy bundled certificates::
+
+    sudo cp docker/ssl/test.crt /usr/local/share/ca-certificates/
+    sudo update-ca-certificates
+
+This certificate is a wildcard for ``*.funkwhale.test``
+
+Run a reverse proxy for your instances
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+
+Crete docker network
+^^^^^^^^^^^^^^^^^^^^
+
+Create the federation network::
+
+    docker network create federation
+
+Launch everything
+^^^^^^^^^^^^^^^^^
+
+Launch the traefik proxy::
+
+    docker-compose -f docker/traefik.yml up -d
+
+Then, in separate terminals, you can setup as many different instances as you
+need::
+
+    export COMPOSE_PROJECT_NAME=node2
+    docker-compose -f dev.yml run --rm api python manage.py migrate
+    docker-compose -f dev.yml run --rm api python manage.py createsuperuser
+    docker-compose -f dev.yml up nginx api front
+
+Note that by default, if you don't export the COMPOSE_PROJECT_NAME,
+we will default to node1 as the name of your instance.
+
+Assuming your project name is ``node1``, your server will be reachable
+at ``https://node1.funkwhale.test/``. Not that you'll have to trust
+the SSL Certificate as it's self signed.
+
+When working on federation with traefik, ensure you have this in your ``env``::
+
+    # This will ensure we don't bind any port on the host, and thus enable
+    # multiple instances of funkwhale to be spawned concurrently.
+    WEBPACK_DEVSERVER_PORT_BINDING=
+    # This disable certificate verification
+    EXTERNAL_REQUESTS_VERIFY_SSL=false
+    # this ensure you don't have incorrect urls pointing to http resources
+    FUNKWHALE_PROTOCOL=https
diff --git a/api/config/api_urls.py b/api/config/api_urls.py
index cab6805b67e394838ec942ecf8b162edb08a88cf..cf5b03744d8b12d5a91fd43df4edbad941870389 100644
--- a/api/config/api_urls.py
+++ b/api/config/api_urls.py
@@ -32,6 +32,10 @@ v1_patterns += [
         include(
             ('funkwhale_api.instance.urls', 'instance'),
             namespace='instance')),
+    url(r'^federation/',
+        include(
+            ('funkwhale_api.federation.api_urls', 'federation'),
+            namespace='federation')),
     url(r'^providers/',
         include(
             ('funkwhale_api.providers.urls', 'providers'),
diff --git a/api/config/settings/common.py b/api/config/settings/common.py
index 7b7f6e64c8d0d6a966484dd7f24aad028814a8a4..ebfd21dd606b236eff89e5b47b7b067b01dadce8 100644
--- a/api/config/settings/common.py
+++ b/api/config/settings/common.py
@@ -25,8 +25,26 @@ try:
 except FileNotFoundError:
     pass
 
-FUNKWHALE_URL = env('FUNKWHALE_URL')
-FUNKWHALE_HOSTNAME = urlsplit(FUNKWHALE_URL).netloc
+FUNKWHALE_HOSTNAME = None
+FUNKWHALE_HOSTNAME_SUFFIX = env('FUNKWHALE_HOSTNAME_SUFFIX', default=None)
+FUNKWHALE_HOSTNAME_PREFIX = env('FUNKWHALE_HOSTNAME_PREFIX', default=None)
+if FUNKWHALE_HOSTNAME_PREFIX and FUNKWHALE_HOSTNAME_SUFFIX:
+    # We're in traefik case, in development
+    FUNKWHALE_HOSTNAME = '{}.{}'.format(
+        FUNKWHALE_HOSTNAME_PREFIX, FUNKWHALE_HOSTNAME_SUFFIX)
+    FUNKWHALE_PROTOCOL = env('FUNKWHALE_PROTOCOL', default='https')
+else:
+    try:
+        FUNKWHALE_HOSTNAME = env('FUNKWHALE_HOSTNAME')
+        FUNKWHALE_PROTOCOL = env('FUNKWHALE_PROTOCOL', default='https')
+    except Exception:
+        FUNKWHALE_URL = env('FUNKWHALE_URL')
+        _parsed = urlsplit(FUNKWHALE_URL)
+        FUNKWHALE_HOSTNAME = _parsed.netloc
+        FUNKWHALE_PROTOCOL = _parsed.scheme
+
+FUNKWHALE_URL = '{}://{}'.format(FUNKWHALE_PROTOCOL, FUNKWHALE_HOSTNAME)
+
 
 FEDERATION_ENABLED = env.bool('FEDERATION_ENABLED', default=True)
 FEDERATION_HOSTNAME = env('FEDERATION_HOSTNAME', default=FUNKWHALE_HOSTNAME)
@@ -406,3 +424,8 @@ ACCOUNT_USERNAME_BLACKLIST = [
     'staff',
     'service',
 ] + env.list('ACCOUNT_USERNAME_BLACKLIST', default=[])
+
+EXTERNAL_REQUESTS_VERIFY_SSL = env.bool(
+    'EXTERNAL_REQUESTS_VERIFY_SSL',
+    default=True
+)
diff --git a/api/funkwhale_api/common/fields.py b/api/funkwhale_api/common/fields.py
index 1a18b5f27d1e1839ef32722499de6b4365d6ac55..98e971662758ed67959431beead7052c34b43e43 100644
--- a/api/funkwhale_api/common/fields.py
+++ b/api/funkwhale_api/common/fields.py
@@ -1,5 +1,9 @@
+import django_filters
+
 from django.db import models
 
+from funkwhale_api.music import utils
+
 
 PRIVACY_LEVEL_CHOICES = [
     ('me', 'Only me'),
@@ -25,3 +29,15 @@ def privacy_level_query(user, lookup_field='privacy_level'):
             'followers', 'instance', 'everyone'
         ]
     })
+
+
+class SearchFilter(django_filters.CharFilter):
+    def __init__(self, *args, **kwargs):
+        self.search_fields = kwargs.pop('search_fields')
+        super().__init__(*args, **kwargs)
+
+    def filter(self, qs, value):
+        if not value:
+            return qs
+        query = utils.get_query(value, self.search_fields)
+        return qs.filter(query)
diff --git a/api/funkwhale_api/federation/activity.py b/api/funkwhale_api/federation/activity.py
index 7d20d7f9ccdd8755618dee6da0869c4419b74f0b..becf6c96f55b68d2503eb7442f673e0fadb4cef7 100644
--- a/api/funkwhale_api/federation/activity.py
+++ b/api/funkwhale_api/federation/activity.py
@@ -1,14 +1,5 @@
-import logging
-import json
-import requests_http_signature
-import uuid
-
-from funkwhale_api.common import session
-
-from . import models
-from . import signing
-
-logger = logging.getLogger(__name__)
+from . import serializers
+from . import tasks
 
 ACTIVITY_TYPES = [
     'Accept',
@@ -61,86 +52,16 @@ OBJECT_TYPES = [
 
 
 def deliver(activity, on_behalf_of, to=[]):
-    from . import actors
-    logger.info('Preparing activity delivery to %s', to)
-    auth = signing.get_auth(
-        on_behalf_of.private_key, on_behalf_of.private_key_id)
-    for url in to:
-        recipient_actor = actors.get_actor(url)
-        logger.debug('delivering to %s', recipient_actor.inbox_url)
-        logger.debug('activity content: %s', json.dumps(activity))
-        response = session.get_session().post(
-            auth=auth,
-            json=activity,
-            url=recipient_actor.inbox_url,
-            headers={
-                'Content-Type': 'application/activity+json'
-            }
-        )
-        response.raise_for_status()
-        logger.debug('Remote answered with %s', response.status_code)
-
-
-def get_follow(follow_id, follower, followed):
-    return {
-        '@context': [
-            'https://www.w3.org/ns/activitystreams',
-            'https://w3id.org/security/v1',
-            {}
-        ],
-        'actor': follower.url,
-        'id': follower.url + '#follows/{}'.format(follow_id),
-        'object': followed.url,
-        'type': 'Follow'
-    }
-
-
-def get_undo(id, actor, object):
-    return {
-        '@context': [
-            'https://www.w3.org/ns/activitystreams',
-            'https://w3id.org/security/v1',
-            {}
-        ],
-        'type': 'Undo',
-        'id': id + '/undo',
-        'actor': actor.url,
-        'object': object,
-    }
-
-
-def get_accept_follow(accept_id, accept_actor, follow, follow_actor):
-    return {
-        "@context": [
-            "https://www.w3.org/ns/activitystreams",
-            "https://w3id.org/security/v1",
-            {}
-        ],
-        "id": accept_actor.url + '#accepts/follows/{}'.format(
-            accept_id),
-        "type": "Accept",
-        "actor": accept_actor.url,
-        "object": {
-            "id": follow['id'],
-            "type": "Follow",
-            "actor": follow_actor.url,
-            "object": accept_actor.url
-        },
-    }
+    return tasks.send.delay(
+        activity=activity,
+        actor_id=on_behalf_of.pk,
+        to=to
+    )
 
 
-def accept_follow(target, follow, actor):
-    accept_uuid = uuid.uuid4()
-    accept = get_accept_follow(
-        accept_id=accept_uuid,
-        accept_actor=target,
-        follow=follow,
-        follow_actor=actor)
-    deliver(
-        accept,
-        to=[actor.url],
-        on_behalf_of=target)
-    return models.Follow.objects.get_or_create(
-        actor=actor,
-        target=target,
-    )
+def accept_follow(follow):
+    serializer = serializers.AcceptFollowSerializer(follow)
+    return deliver(
+        serializer.data,
+        to=[follow.actor.url],
+        on_behalf_of=follow.target)
diff --git a/api/funkwhale_api/federation/actors.py b/api/funkwhale_api/federation/actors.py
index a461eb76aaa0c4fd6e687c246fa51006d5878ae2..27a418c7dad9ec7f233905b659554df26eb51b6b 100644
--- a/api/funkwhale_api/federation/actors.py
+++ b/api/funkwhale_api/federation/actors.py
@@ -31,6 +31,8 @@ def remove_tags(text):
 def get_actor_data(actor_url):
     response = session.get_session().get(
         actor_url,
+        timeout=5,
+        verify=settings.EXTERNAL_REQUESTS_VERIFY_SSL,
         headers={
             'Accept': 'application/activity+json',
         }
@@ -42,6 +44,7 @@ def get_actor_data(actor_url):
         raise ValueError(
             'Invalid actor payload: {}'.format(response.text))
 
+
 def get_actor(actor_url):
     data = get_actor_data(actor_url)
     serializer = serializers.ActorSerializer(data=data)
@@ -150,24 +153,32 @@ class SystemActor(object):
 
     def handle_follow(self, ac, sender):
         system_actor = self.get_actor_instance()
-        if self.manually_approves_followers:
-            fr, created = models.FollowRequest.objects.get_or_create(
-                actor=sender,
-                target=system_actor,
-                approved=None,
-            )
-            return fr
+        serializer = serializers.FollowSerializer(
+            data=ac, context={'follow_actor': sender})
+        if not serializer.is_valid():
+            return logger.info('Invalid follow payload')
+        approved = True if not self.manually_approves_followers else None
+        follow = serializer.save(approved=approved)
+        if follow.approved:
+            return activity.accept_follow(follow)
+
+    def handle_accept(self, ac, sender):
+        system_actor = self.get_actor_instance()
+        serializer = serializers.AcceptFollowSerializer(
+            data=ac,
+            context={'follow_target': sender, 'follow_actor': system_actor})
+        if not serializer.is_valid(raise_exception=True):
+            return logger.info('Received invalid payload')
 
-        return activity.accept_follow(
-            system_actor, ac, sender
-        )
+        return serializer.save()
 
     def handle_undo_follow(self, ac, sender):
-        actor = self.get_actor_instance()
-        models.Follow.objects.filter(
-            actor=sender,
-            target=actor,
-        ).delete()
+        system_actor = self.get_actor_instance()
+        serializer = serializers.UndoFollowSerializer(
+            data=ac, context={'actor': sender, 'target': system_actor})
+        if not serializer.is_valid():
+            return logger.info('Received invalid payload')
+        serializer.save()
 
     def handle_undo(self, ac, sender):
         if ac['object']['type'] != 'Follow':
@@ -343,15 +354,15 @@ class TestActor(SystemActor):
         super().handle_follow(ac, sender)
         # also, we follow back
         test_actor = self.get_actor_instance()
-        follow_uuid = uuid.uuid4()
-        follow = activity.get_follow(
-            follow_id=follow_uuid,
-            follower=test_actor,
-            followed=sender)
+        follow_back = models.Follow.objects.get_or_create(
+            actor=test_actor,
+            target=sender,
+            approved=None,
+        )[0]
         activity.deliver(
-            follow,
-            to=[ac['actor']],
-            on_behalf_of=test_actor)
+            serializers.FollowSerializer(follow_back).data,
+            to=[follow_back.target.url],
+            on_behalf_of=follow_back.actor)
 
     def handle_undo_follow(self, ac, sender):
         super().handle_undo_follow(ac, sender)
@@ -364,11 +375,7 @@ class TestActor(SystemActor):
             )
         except models.Follow.DoesNotExist:
             return
-        undo = activity.get_undo(
-            id=follow.get_federation_url(),
-            actor=actor,
-            object=serializers.FollowSerializer(follow).data,
-        )
+        undo = serializers.UndoFollowSerializer(follow).data
         follow.delete()
         activity.deliver(
             undo,
diff --git a/api/funkwhale_api/federation/admin.py b/api/funkwhale_api/federation/admin.py
new file mode 100644
index 0000000000000000000000000000000000000000..6a097174b552658e0f9c1d5075932300f23e3bdd
--- /dev/null
+++ b/api/funkwhale_api/federation/admin.py
@@ -0,0 +1,66 @@
+from django.contrib import admin
+
+from . import models
+
+
+@admin.register(models.Actor)
+class ActorAdmin(admin.ModelAdmin):
+    list_display = [
+        'url',
+        'domain',
+        'preferred_username',
+        'type',
+        'creation_date',
+        'last_fetch_date']
+    search_fields = ['url', 'domain', 'preferred_username']
+    list_filter = [
+        'type'
+    ]
+
+
+@admin.register(models.Follow)
+class FollowAdmin(admin.ModelAdmin):
+    list_display = [
+        'actor',
+        'target',
+        'approved',
+        'creation_date'
+    ]
+    list_filter = [
+        'approved'
+    ]
+    search_fields = ['actor__url', 'target__url']
+    list_select_related = True
+
+
+@admin.register(models.Library)
+class LibraryAdmin(admin.ModelAdmin):
+    list_display = [
+        'actor',
+        'url',
+        'creation_date',
+        'fetched_date',
+        'tracks_count']
+    search_fields = ['actor__url', 'url']
+    list_filter = [
+        'federation_enabled',
+        'download_files',
+        'autoimport',
+    ]
+    list_select_related = True
+
+
+@admin.register(models.LibraryTrack)
+class LibraryTrackAdmin(admin.ModelAdmin):
+    list_display = [
+        'title',
+        'artist_name',
+        'album_title',
+        'url',
+        'library',
+        'creation_date',
+        'published_date',
+    ]
+    search_fields = [
+        'library__url', 'url', 'artist_name', 'title', 'album_title']
+    list_select_related = True
diff --git a/api/funkwhale_api/federation/api_urls.py b/api/funkwhale_api/federation/api_urls.py
new file mode 100644
index 0000000000000000000000000000000000000000..41dd1c0f99e44c4602f3592f0aca292f212b4876
--- /dev/null
+++ b/api/funkwhale_api/federation/api_urls.py
@@ -0,0 +1,15 @@
+from rest_framework import routers
+
+from . import views
+
+router = routers.SimpleRouter()
+router.register(
+    r'libraries',
+    views.LibraryViewSet,
+    'libraries')
+router.register(
+    r'library-tracks',
+    views.LibraryTrackViewSet,
+    'library-tracks')
+
+urlpatterns = router.urls
diff --git a/api/funkwhale_api/federation/dynamic_preferences_registry.py b/api/funkwhale_api/federation/dynamic_preferences_registry.py
index c7cb015a81e0758181b73be1d38a0b3b38b1db90..43877c75c9717eda3c46c0f039366803aadd77c9 100644
--- a/api/funkwhale_api/federation/dynamic_preferences_registry.py
+++ b/api/funkwhale_api/federation/dynamic_preferences_registry.py
@@ -4,3 +4,17 @@ from dynamic_preferences import types
 from dynamic_preferences.registries import global_preferences_registry
 
 federation = types.Section('federation')
+
+
+@global_preferences_registry.register
+class MusicCacheDuration(types.IntPreference):
+    show_in_api = True
+    section = federation
+    name = 'music_cache_duration'
+    default = 60 * 24 * 2
+    verbose_name = 'Music cache duration'
+    help_text = (
+        'How much minutes do you want to keep a copy of federated tracks'
+        'locally? Federated files that were not listened in this interval '
+        'will be erased and refetched from the remote on the next listening.'
+    )
diff --git a/api/funkwhale_api/federation/factories.py b/api/funkwhale_api/federation/factories.py
index b3ac72039ed91f5f9a76d447f4cfd0d8bc0e282b..0754c4b2f44123e743f9df503c4457b529a17584 100644
--- a/api/funkwhale_api/federation/factories.py
+++ b/api/funkwhale_api/federation/factories.py
@@ -113,15 +113,6 @@ class FollowFactory(factory.DjangoModelFactory):
         )
 
 
-@registry.register
-class FollowRequestFactory(factory.DjangoModelFactory):
-    target = factory.SubFactory(ActorFactory)
-    actor = factory.SubFactory(ActorFactory)
-
-    class Meta:
-        model = models.FollowRequest
-
-
 @registry.register
 class LibraryFactory(factory.DjangoModelFactory):
     actor = factory.SubFactory(ActorFactory)
@@ -194,6 +185,11 @@ class LibraryTrackFactory(factory.DjangoModelFactory):
     class Meta:
         model = models.LibraryTrack
 
+    class Params:
+        with_audio_file = factory.Trait(
+            audio_file=factory.django.FileField()
+        )
+
 
 @registry.register(name='federation.Note')
 class NoteFactory(factory.Factory):
diff --git a/api/funkwhale_api/federation/filters.py b/api/funkwhale_api/federation/filters.py
new file mode 100644
index 0000000000000000000000000000000000000000..c911f1a891966adf0ba942670ad1a74fbaca4da7
--- /dev/null
+++ b/api/funkwhale_api/federation/filters.py
@@ -0,0 +1,66 @@
+import django_filters
+
+from funkwhale_api.common import fields
+
+from . import models
+
+
+class LibraryFilter(django_filters.FilterSet):
+    approved = django_filters.BooleanFilter('following__approved')
+    q = fields.SearchFilter(search_fields=[
+        'actor__domain',
+    ])
+
+    class Meta:
+        model = models.Library
+        fields = {
+            'approved': ['exact'],
+            'federation_enabled': ['exact'],
+            'download_files': ['exact'],
+            'autoimport': ['exact'],
+            'tracks_count': ['exact'],
+        }
+
+
+class LibraryTrackFilter(django_filters.FilterSet):
+    library = django_filters.CharFilter('library__uuid')
+    q = fields.SearchFilter(search_fields=[
+        'artist_name',
+        'title',
+        'album_title',
+        'library__actor__domain',
+    ])
+
+    class Meta:
+        model = models.LibraryTrack
+        fields = {
+            'library': ['exact'],
+            'artist_name': ['exact', 'icontains'],
+            'title': ['exact', 'icontains'],
+            'album_title': ['exact', 'icontains'],
+            'audio_mimetype': ['exact', 'icontains'],
+        }
+
+
+class FollowFilter(django_filters.FilterSet):
+    pending = django_filters.CharFilter(method='filter_pending')
+    ordering = django_filters.OrderingFilter(
+        # tuple-mapping retains order
+        fields=(
+            ('creation_date', 'creation_date'),
+            ('modification_date', 'modification_date'),
+        ),
+    )
+    q = fields.SearchFilter(search_fields=[
+        'actor__domain',
+        'actor__preferred_username',
+    ])
+
+    class Meta:
+        model = models.Follow
+        fields = ['approved', 'pending', 'q']
+
+    def filter_pending(self, queryset, field_name, value):
+        if value.lower() in ['true', '1', 'yes']:
+            queryset = queryset.filter(approved__isnull=True)
+        return queryset
diff --git a/api/funkwhale_api/federation/library.py b/api/funkwhale_api/federation/library.py
new file mode 100644
index 0000000000000000000000000000000000000000..c53ce543067b7a014171ee44baeeafd99d7cc334
--- /dev/null
+++ b/api/funkwhale_api/federation/library.py
@@ -0,0 +1,166 @@
+import json
+import requests
+
+from django.conf import settings
+
+from funkwhale_api.common import session
+
+from . import actors
+from . import models
+from . import serializers
+from . import signing
+from . import webfinger
+
+
+def scan_from_account_name(account_name):
+    """
+    Given an account name such as library@test.library, will:
+
+    1. Perform the webfinger lookup
+    2. Perform the actor lookup
+    3. Perform the library's collection lookup
+
+    and return corresponding data in a dictionary.
+    """
+    data = {}
+    try:
+        username, domain = webfinger.clean_acct(
+            account_name, ensure_local=False)
+    except serializers.ValidationError:
+        return {
+            'webfinger': {
+                'errors': ['Invalid account string']
+            }
+        }
+    system_library = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    library = models.Library.objects.filter(
+        actor__domain=domain,
+        actor__preferred_username=username
+    ).select_related('actor').first()
+    data['local'] = {
+        'following': False,
+        'awaiting_approval': False,
+    }
+    try:
+        follow = models.Follow.objects.get(
+            target__preferred_username=username,
+            target__domain=username,
+            actor=system_library,
+        )
+        data['local']['awaiting_approval'] = not bool(follow.approved)
+        data['local']['following'] = True
+    except models.Follow.DoesNotExist:
+        pass
+
+    try:
+        data['webfinger'] = webfinger.get_resource(
+            'acct:{}'.format(account_name))
+    except requests.ConnectionError:
+        return {
+            'webfinger': {
+                'errors': ['This webfinger resource is not reachable']
+            }
+        }
+    except requests.HTTPError as e:
+        return {
+            'webfinger': {
+                'errors': [
+                    'Error {} during webfinger request'.format(
+                        e.response.status_code)]
+            }
+        }
+    except json.JSONDecodeError as e:
+        return {
+            'webfinger': {
+                'errors': ['Could not process webfinger response']
+            }
+        }
+
+    try:
+        data['actor'] = actors.get_actor_data(data['webfinger']['actor_url'])
+    except requests.ConnectionError:
+        data['actor'] = {
+            'errors': ['This actor is not reachable']
+        }
+        return data
+    except requests.HTTPError as e:
+        data['actor'] = {
+            'errors': [
+                'Error {} during actor request'.format(
+                    e.response.status_code)]
+        }
+        return data
+
+    serializer = serializers.LibraryActorSerializer(data=data['actor'])
+    if not serializer.is_valid():
+        data['actor'] = {
+            'errors': ['Invalid ActivityPub actor']
+        }
+        return data
+    data['library'] = get_library_data(
+        serializer.validated_data['library_url'])
+
+    return data
+
+
+def get_library_data(library_url):
+    actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    auth = signing.get_auth(actor.private_key, actor.private_key_id)
+    try:
+        response = session.get_session().get(
+            library_url,
+            auth=auth,
+            timeout=5,
+            verify=settings.EXTERNAL_REQUESTS_VERIFY_SSL,
+            headers={
+                'Content-Type': 'application/activity+json'
+            }
+        )
+    except requests.ConnectionError:
+        return {
+            'errors': ['This library is not reachable']
+        }
+    scode = response.status_code
+    if scode == 401:
+        return {
+            'errors': ['This library requires authentication']
+        }
+    elif scode == 403:
+        return {
+            'errors': ['Permission denied while scanning library']
+        }
+    elif scode >= 400:
+        return {
+            'errors': ['Error {} while fetching the library'.format(scode)]
+        }
+    serializer = serializers.PaginatedCollectionSerializer(
+        data=response.json(),
+    )
+    if not serializer.is_valid():
+        return {
+            'errors': [
+                'Invalid ActivityPub response from remote library']
+        }
+
+    return serializer.validated_data
+
+
+def get_library_page(library, page_url):
+    actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    auth = signing.get_auth(actor.private_key, actor.private_key_id)
+    response = session.get_session().get(
+        page_url,
+        auth=auth,
+        timeout=5,
+        verify=settings.EXTERNAL_REQUESTS_VERIFY_SSL,
+        headers={
+            'Content-Type': 'application/activity+json'
+        }
+    )
+    serializer = serializers.CollectionPageSerializer(
+        data=response.json(),
+        context={
+            'library': library,
+            'item_serializer': serializers.AudioSerializer})
+    serializer.is_valid(raise_exception=True)
+    return serializer.validated_data
diff --git a/api/funkwhale_api/federation/migrations/0004_auto_20180410_2025.py b/api/funkwhale_api/federation/migrations/0004_auto_20180410_2025.py
new file mode 100644
index 0000000000000000000000000000000000000000..bea4d14ae6502272486b48bfa6f6f2074e06cb2c
--- /dev/null
+++ b/api/funkwhale_api/federation/migrations/0004_auto_20180410_2025.py
@@ -0,0 +1,35 @@
+# Generated by Django 2.0.3 on 2018-04-10 20:25
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('federation', '0003_auto_20180407_1010'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='followrequest',
+            name='actor',
+        ),
+        migrations.RemoveField(
+            model_name='followrequest',
+            name='target',
+        ),
+        migrations.AddField(
+            model_name='follow',
+            name='approved',
+            field=models.NullBooleanField(default=None),
+        ),
+        migrations.AddField(
+            model_name='library',
+            name='follow',
+            field=models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='library', to='federation.Follow'),
+        ),
+        migrations.DeleteModel(
+            name='FollowRequest',
+        ),
+    ]
diff --git a/api/funkwhale_api/federation/migrations/0005_auto_20180413_1723.py b/api/funkwhale_api/federation/migrations/0005_auto_20180413_1723.py
new file mode 100644
index 0000000000000000000000000000000000000000..00ba5c83deb9316ab8d509ba5e859e2fe979aafd
--- /dev/null
+++ b/api/funkwhale_api/federation/migrations/0005_auto_20180413_1723.py
@@ -0,0 +1,26 @@
+# Generated by Django 2.0.3 on 2018-04-13 17:23
+
+import django.contrib.postgres.fields.jsonb
+import django.core.serializers.json
+from django.db import migrations, models
+import funkwhale_api.federation.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('federation', '0004_auto_20180410_2025'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='librarytrack',
+            name='audio_file',
+            field=models.FileField(blank=True, null=True, upload_to=funkwhale_api.federation.models.get_file_path),
+        ),
+        migrations.AlterField(
+            model_name='librarytrack',
+            name='metadata',
+            field=django.contrib.postgres.fields.jsonb.JSONField(default={}, encoder=django.core.serializers.json.DjangoJSONEncoder, max_length=10000),
+        ),
+    ]
diff --git a/api/funkwhale_api/federation/models.py b/api/funkwhale_api/federation/models.py
index bf1e5d830c875a00467d3476c0528338970cd094..066c5847b0f7c115788162ca3039169e499e5198 100644
--- a/api/funkwhale_api/federation/models.py
+++ b/api/funkwhale_api/federation/models.py
@@ -1,10 +1,16 @@
+import os
 import uuid
+import tempfile
 
 from django.conf import settings
 from django.contrib.postgres.fields import JSONField
+from django.core.serializers.json import DjangoJSONEncoder
 from django.db import models
 from django.utils import timezone
 
+from funkwhale_api.common import session
+from funkwhale_api.music import utils as music_utils
+
 TYPE_CHOICES = [
     ('Person', 'Person'),
     ('Application', 'Application'),
@@ -109,6 +115,7 @@ class Follow(models.Model):
     creation_date = models.DateTimeField(default=timezone.now)
     modification_date = models.DateTimeField(
         auto_now=True)
+    approved = models.NullBooleanField(default=None)
 
     class Meta:
         unique_together = ['actor', 'target']
@@ -117,49 +124,6 @@ class Follow(models.Model):
         return '{}#follows/{}'.format(self.actor.url, self.uuid)
 
 
-class FollowRequest(models.Model):
-    uuid = models.UUIDField(default=uuid.uuid4, unique=True)
-    actor = models.ForeignKey(
-        Actor,
-        related_name='emmited_follow_requests',
-        on_delete=models.CASCADE,
-    )
-    target = models.ForeignKey(
-        Actor,
-        related_name='received_follow_requests',
-        on_delete=models.CASCADE,
-    )
-    creation_date = models.DateTimeField(default=timezone.now)
-    modification_date = models.DateTimeField(
-        auto_now=True)
-    approved = models.NullBooleanField(default=None)
-
-    def approve(self):
-        from . import activity
-        from . import serializers
-        self.approved = True
-        self.save(update_fields=['approved'])
-        Follow.objects.get_or_create(
-            target=self.target,
-            actor=self.actor
-        )
-        if self.target.is_local:
-            follow = {
-                '@context': serializers.AP_CONTEXT,
-                'actor': self.actor.url,
-                'id': self.actor.url + '#follows/{}'.format(uuid.uuid4()),
-                'object': self.target.url,
-                'type': 'Follow'
-            }
-            activity.accept_follow(
-                self.target, follow, self.actor
-            )
-
-    def refuse(self):
-        self.approved = False
-        self.save(update_fields=['approved'])
-
-
 class Library(models.Model):
     creation_date = models.DateTimeField(default=timezone.now)
     modification_date = models.DateTimeField(
@@ -179,12 +143,32 @@ class Library(models.Model):
     # should we automatically import new files from this library?
     autoimport = models.BooleanField()
     tracks_count = models.PositiveIntegerField(null=True, blank=True)
+    follow = models.OneToOneField(
+        Follow,
+        related_name='library',
+        null=True,
+        blank=True,
+        on_delete=models.SET_NULL,
+    )
+
+
+def get_file_path(instance, filename):
+    uid = str(uuid.uuid4())
+    chunk_size = 2
+    chunks = [uid[i:i+chunk_size] for i in range(0, len(uid), chunk_size)]
+    parts = chunks[:3] + [filename]
+    return os.path.join('federation_cache', *parts)
 
 
 class LibraryTrack(models.Model):
     url = models.URLField(unique=True)
     audio_url = models.URLField()
     audio_mimetype = models.CharField(max_length=200)
+    audio_file = models.FileField(
+        upload_to=get_file_path,
+        null=True,
+        blank=True)
+
     creation_date = models.DateTimeField(default=timezone.now)
     modification_date = models.DateTimeField(
         auto_now=True)
@@ -195,4 +179,35 @@ class LibraryTrack(models.Model):
     artist_name = models.CharField(max_length=500)
     album_title = models.CharField(max_length=500)
     title = models.CharField(max_length=500)
-    metadata = JSONField(default={}, max_length=10000)
+    metadata = JSONField(
+        default={}, max_length=10000, encoder=DjangoJSONEncoder)
+
+    @property
+    def mbid(self):
+        try:
+            return self.metadata['recording']['musicbrainz_id']
+        except KeyError:
+            pass
+
+    def download_audio(self):
+        from . import actors
+        auth = actors.SYSTEM_ACTORS['library'].get_request_auth()
+        remote_response = session.get_session().get(
+            self.audio_url,
+            auth=auth,
+            stream=True,
+            timeout=20,
+            verify=settings.EXTERNAL_REQUESTS_VERIFY_SSL,
+            headers={
+                'Content-Type': 'application/activity+json'
+            }
+        )
+        with remote_response as r:
+            remote_response.raise_for_status()
+            extension = music_utils.get_ext_from_type(self.audio_mimetype)
+            title = ' - '.join([self.title, self.album_title, self.artist_name])
+            filename = '{}.{}'.format(title, extension)
+            tmp_file = tempfile.TemporaryFile()
+            for chunk in r.iter_content(chunk_size=512):
+                tmp_file.write(chunk)
+            self.audio_file.save(filename, tmp_file)
diff --git a/api/funkwhale_api/federation/serializers.py b/api/funkwhale_api/federation/serializers.py
index 17541c50fa348d0f28cc6752b4a50b94b6ca1890..4964106d8f3d5be3f1029b0811aec2beffcabc7f 100644
--- a/api/funkwhale_api/federation/serializers.py
+++ b/api/funkwhale_api/federation/serializers.py
@@ -8,7 +8,7 @@ from django.db import transaction
 from rest_framework import serializers
 from dynamic_preferences.registries import global_preferences_registry
 
-from funkwhale_api.common.utils import set_query_parameter
+from funkwhale_api.common import utils as funkwhale_utils
 
 from . import activity
 from . import models
@@ -21,38 +21,39 @@ AP_CONTEXT = [
     {},
 ]
 
-class ActorSerializer(serializers.ModelSerializer):
-    # left maps to activitypub fields, right to our internal models
-    id = serializers.URLField(source='url')
-    outbox = serializers.URLField(source='outbox_url')
-    inbox = serializers.URLField(source='inbox_url')
-    following = serializers.URLField(source='following_url', required=False)
-    followers = serializers.URLField(source='followers_url', required=False)
-    preferredUsername = serializers.CharField(
-        source='preferred_username', required=False)
-    publicKey = serializers.JSONField(source='public_key', required=False)
-    manuallyApprovesFollowers = serializers.NullBooleanField(
-        source='manually_approves_followers', required=False)
-    summary = serializers.CharField(max_length=None, required=False)
 
-    class Meta:
-        model = models.Actor
-        fields = [
-            'id',
-            'type',
-            'name',
-            'summary',
-            'preferredUsername',
-            'publicKey',
-            'inbox',
-            'outbox',
-            'following',
-            'followers',
-            'manuallyApprovesFollowers',
-        ]
+class ActorSerializer(serializers.Serializer):
+    id = serializers.URLField()
+    outbox = serializers.URLField()
+    inbox = serializers.URLField()
+    type = serializers.ChoiceField(choices=models.TYPE_CHOICES)
+    preferredUsername = serializers.CharField()
+    manuallyApprovesFollowers = serializers.NullBooleanField(required=False)
+    name = serializers.CharField(required=False, max_length=200)
+    summary = serializers.CharField(max_length=None, required=False)
+    followers = serializers.URLField(required=False, allow_null=True)
+    following = serializers.URLField(required=False, allow_null=True)
+    publicKey = serializers.JSONField(required=False)
 
     def to_representation(self, instance):
-        ret = super().to_representation(instance)
+        ret = {
+            'id': instance.url,
+            'outbox': instance.outbox_url,
+            'inbox': instance.inbox_url,
+            'preferredUsername': instance.preferred_username,
+            'type': instance.type,
+        }
+        if instance.name:
+            ret['name'] = instance.name
+        if instance.followers_url:
+            ret['followers'] = instance.followers_url
+        if instance.following_url:
+            ret['following'] = instance.following_url
+        if instance.summary:
+            ret['summary'] = instance.summary
+        if instance.manually_approves_followers is not None:
+            ret['manuallyApprovesFollowers'] = instance.manually_approves_followers
+
         ret['@context'] = AP_CONTEXT
         if instance.public_key:
             ret['publicKey'] = {
@@ -66,8 +67,21 @@ class ActorSerializer(serializers.ModelSerializer):
         return ret
 
     def prepare_missing_fields(self):
-        kwargs = {}
-        domain = urllib.parse.urlparse(self.validated_data['url']).netloc
+        kwargs = {
+            'url': self.validated_data['id'],
+            'outbox_url': self.validated_data['outbox'],
+            'inbox_url': self.validated_data['inbox'],
+            'following_url': self.validated_data.get('following'),
+            'followers_url': self.validated_data.get('followers'),
+            'summary': self.validated_data.get('summary'),
+            'type': self.validated_data['type'],
+            'name': self.validated_data.get('name'),
+            'preferred_username': self.validated_data['preferredUsername'],
+        }
+        maf = self.validated_data.get('manuallyApprovesFollowers')
+        if maf is not None:
+            kwargs['manually_approves_followers'] = maf
+        domain = urllib.parse.urlparse(kwargs['url']).netloc
         kwargs['domain'] = domain
         for endpoint, url in self.initial_data.get('endpoints', {}).items():
             if endpoint == 'sharedInbox':
@@ -80,45 +94,386 @@ class ActorSerializer(serializers.ModelSerializer):
         return kwargs
 
     def build(self):
-        d = self.validated_data.copy()
-        d.update(self.prepare_missing_fields())
-        return self.Meta.model(**d)
+        d = self.prepare_missing_fields()
+        return models.Actor(**d)
 
     def save(self, **kwargs):
-        kwargs.update(self.prepare_missing_fields())
-        return super().save(**kwargs)
+        d = self.prepare_missing_fields()
+        d.update(kwargs)
+        return models.Actor.objects.create(
+            **d
+        )
 
     def validate_summary(self, value):
         if value:
             return value[:500]
 
 
-class FollowSerializer(serializers.ModelSerializer):
-    # left maps to activitypub fields, right to our internal models
-    id = serializers.URLField(source='get_federation_url')
-    object = serializers.URLField(source='target.url')
-    actor = serializers.URLField(source='actor.url')
-    type = serializers.CharField(source='ap_type')
-
+class APIActorSerializer(serializers.ModelSerializer):
     class Meta:
         model = models.Actor
         fields = [
             'id',
-            'object',
+            'url',
+            'creation_date',
+            'summary',
+            'preferred_username',
+            'name',
+            'last_fetch_date',
+            'domain',
+            'type',
+            'manually_approves_followers',
+
+        ]
+
+
+class LibraryActorSerializer(ActorSerializer):
+    url = serializers.ListField(
+        child=serializers.JSONField())
+
+    def validate(self, validated_data):
+        try:
+            urls = validated_data['url']
+        except KeyError:
+            raise serializers.ValidationError('Missing URL field')
+
+        for u in urls:
+            try:
+                if u['name'] != 'library':
+                    continue
+                validated_data['library_url'] = u['href']
+                break
+            except KeyError:
+                continue
+
+        return validated_data
+
+
+class APIFollowSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = models.Follow
+        fields = [
+            'uuid',
+            'actor',
+            'target',
+            'approved',
+            'creation_date',
+            'modification_date',
+        ]
+
+
+class APILibrarySerializer(serializers.ModelSerializer):
+    actor = APIActorSerializer()
+    follow = APIFollowSerializer()
+
+    class Meta:
+        model = models.Library
+
+        read_only_fields = [
             'actor',
-            'type'
+            'uuid',
+            'url',
+            'tracks_count',
+            'follow',
+            'fetched_date',
+            'modification_date',
+            'creation_date',
+        ]
+        fields = [
+            'autoimport',
+            'federation_enabled',
+            'download_files',
+        ] + read_only_fields
+
+
+class APILibraryScanSerializer(serializers.Serializer):
+    until = serializers.DateTimeField(required=False)
+
+
+class APILibraryFollowUpdateSerializer(serializers.Serializer):
+    follow = serializers.IntegerField()
+    approved = serializers.BooleanField()
+
+    def validate_follow(self, value):
+        from . import actors
+        library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+        qs = models.Follow.objects.filter(
+            pk=value,
+            target=library_actor,
+        )
+        try:
+            return qs.get()
+        except models.Follow.DoesNotExist:
+            raise serializers.ValidationError('Invalid follow')
+
+    def save(self):
+        new_status = self.validated_data['approved']
+        follow = self.validated_data['follow']
+        if new_status == follow.approved:
+            return follow
+
+        follow.approved = new_status
+        follow.save(update_fields=['approved', 'modification_date'])
+        if new_status:
+            activity.accept_follow(follow)
+        return follow
+
+
+class APILibraryCreateSerializer(serializers.ModelSerializer):
+    actor = serializers.URLField()
+    federation_enabled = serializers.BooleanField()
+    uuid = serializers.UUIDField(read_only=True)
+
+    class Meta:
+        model = models.Library
+        fields = [
+            'uuid',
+            'actor',
+            'autoimport',
+            'federation_enabled',
+            'download_files',
+        ]
+
+    def validate(self, validated_data):
+        from . import actors
+        from . import library
+
+        actor_url = validated_data['actor']
+        actor_data = actors.get_actor_data(actor_url)
+        acs = LibraryActorSerializer(data=actor_data)
+        acs.is_valid(raise_exception=True)
+        try:
+            actor = models.Actor.objects.get(url=actor_url)
+        except models.Actor.DoesNotExist:
+            actor = acs.save()
+        library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+        validated_data['follow'] = models.Follow.objects.get_or_create(
+            actor=library_actor,
+            target=actor,
+        )[0]
+        if validated_data['follow'].approved is None:
+            funkwhale_utils.on_commit(
+                activity.deliver,
+                FollowSerializer(validated_data['follow']).data,
+                on_behalf_of=validated_data['follow'].actor,
+                to=[validated_data['follow'].target.url],
+            )
+
+        library_data = library.get_library_data(
+            acs.validated_data['library_url'])
+        if 'errors' in library_data:
+            # we pass silently because it may means we require permission
+            # before scanning
+            pass
+        validated_data['library'] = library_data
+        validated_data['library'].setdefault(
+            'id', acs.validated_data['library_url']
+        )
+        validated_data['actor'] = actor
+        return validated_data
+
+    def create(self, validated_data):
+        library = models.Library.objects.update_or_create(
+            url=validated_data['library']['id'],
+            defaults={
+                'actor': validated_data['actor'],
+                'follow': validated_data['follow'],
+                'tracks_count': validated_data['library'].get('totalItems'),
+                'federation_enabled': validated_data['federation_enabled'],
+                'autoimport': validated_data['autoimport'],
+                'download_files': validated_data['download_files'],
+            }
+        )[0]
+        return library
+
+
+class APILibraryTrackSerializer(serializers.ModelSerializer):
+    library = APILibrarySerializer()
+
+    class Meta:
+        model = models.LibraryTrack
+        fields = [
+            'id',
+            'url',
+            'audio_url',
+            'audio_mimetype',
+            'creation_date',
+            'modification_date',
+            'fetched_date',
+            'published_date',
+            'metadata',
+            'artist_name',
+            'album_title',
+            'title',
+            'library',
+            'local_track_file',
         ]
 
+
+class FollowSerializer(serializers.Serializer):
+    id = serializers.URLField()
+    object = serializers.URLField()
+    actor = serializers.URLField()
+    type = serializers.ChoiceField(choices=['Follow'])
+
+    def validate_object(self, v):
+        expected = self.context.get('follow_target')
+        if expected and expected.url != v:
+            raise serializers.ValidationError('Invalid target')
+        try:
+            return models.Actor.objects.get(url=v)
+        except models.Actor.DoesNotExist:
+            raise serializers.ValidationError('Target not found')
+
+    def validate_actor(self, v):
+        expected = self.context.get('follow_actor')
+        if expected and expected.url != v:
+            raise serializers.ValidationError('Invalid actor')
+        try:
+            return models.Actor.objects.get(url=v)
+        except models.Actor.DoesNotExist:
+            raise serializers.ValidationError('Actor not found')
+
+    def save(self, **kwargs):
+        return models.Follow.objects.get_or_create(
+            actor=self.validated_data['actor'],
+            target=self.validated_data['object'],
+            **kwargs,
+        )[0]
+
     def to_representation(self, instance):
-        ret = super().to_representation(instance)
-        ret['@context'] = AP_CONTEXT
+        return {
+            '@context': AP_CONTEXT,
+            'actor': instance.actor.url,
+            'id': instance.get_federation_url(),
+            'object': instance.target.url,
+            'type': 'Follow'
+        }
         return ret
 
 
-class ActorWebfingerSerializer(serializers.ModelSerializer):
+class APIFollowSerializer(serializers.ModelSerializer):
+    actor = APIActorSerializer()
+    target = APIActorSerializer()
+
     class Meta:
-        model = models.Actor
-        fields = ['url']
+        model = models.Follow
+        fields = [
+            'uuid',
+            'id',
+            'approved',
+            'creation_date',
+            'modification_date',
+            'actor',
+            'target',
+        ]
+
+
+class AcceptFollowSerializer(serializers.Serializer):
+    id = serializers.URLField()
+    actor = serializers.URLField()
+    object = FollowSerializer()
+    type = serializers.ChoiceField(choices=['Accept'])
+
+    def validate_actor(self, v):
+        expected = self.context.get('follow_target')
+        if expected and expected.url != v:
+            raise serializers.ValidationError('Invalid actor')
+        try:
+            return models.Actor.objects.get(url=v)
+        except models.Actor.DoesNotExist:
+            raise serializers.ValidationError('Actor not found')
+
+    def validate(self, validated_data):
+        # we ensure the accept actor actually match the follow target
+        if validated_data['actor'] != validated_data['object']['object']:
+            raise serializers.ValidationError('Actor mismatch')
+        try:
+            validated_data['follow'] = models.Follow.objects.filter(
+                target=validated_data['actor'],
+                actor=validated_data['object']['actor']
+            ).exclude(approved=True).get()
+        except models.Follow.DoesNotExist:
+            raise serializers.ValidationError('No follow to accept')
+        return validated_data
+
+    def to_representation(self, instance):
+        return {
+            "@context": AP_CONTEXT,
+            "id": instance.get_federation_url() + '/accept',
+            "type": "Accept",
+            "actor": instance.target.url,
+            "object": FollowSerializer(instance).data
+        }
+
+    def save(self):
+        self.validated_data['follow'].approved = True
+        self.validated_data['follow'].save()
+        return self.validated_data['follow']
+
+
+class UndoFollowSerializer(serializers.Serializer):
+    id = serializers.URLField()
+    actor = serializers.URLField()
+    object = FollowSerializer()
+    type = serializers.ChoiceField(choices=['Undo'])
+
+    def validate_actor(self, v):
+        expected = self.context.get('follow_target')
+        if expected and expected.url != v:
+            raise serializers.ValidationError('Invalid actor')
+        try:
+            return models.Actor.objects.get(url=v)
+        except models.Actor.DoesNotExist:
+            raise serializers.ValidationError('Actor not found')
+
+    def validate(self, validated_data):
+        # we ensure the accept actor actually match the follow actor
+        if validated_data['actor'] != validated_data['object']['actor']:
+            raise serializers.ValidationError('Actor mismatch')
+        try:
+            validated_data['follow'] = models.Follow.objects.filter(
+                actor=validated_data['actor'],
+                target=validated_data['object']['object']
+            ).get()
+        except models.Follow.DoesNotExist:
+            raise serializers.ValidationError('No follow to remove')
+        return validated_data
+
+    def to_representation(self, instance):
+        return {
+            "@context": AP_CONTEXT,
+            "id": instance.get_federation_url() + '/undo',
+            "type": "Undo",
+            "actor": instance.actor.url,
+            "object": FollowSerializer(instance).data
+        }
+
+    def save(self):
+        return self.validated_data['follow'].delete()
+
+
+class ActorWebfingerSerializer(serializers.Serializer):
+    subject = serializers.CharField()
+    aliases = serializers.ListField(child=serializers.URLField())
+    links = serializers.ListField()
+    actor_url = serializers.URLField(required=False)
+
+    def validate(self, validated_data):
+        validated_data['actor_url'] = None
+        for l in validated_data['links']:
+            try:
+                if not l['rel'] == 'self':
+                    continue
+                if not l['type'] == 'application/activity+json':
+                    continue
+                validated_data['actor_url'] = l['href']
+                break
+            except KeyError:
+                pass
+        if validated_data['actor_url'] is None:
+            raise serializers.ValidationError('No valid actor url found')
+        return validated_data
 
     def to_representation(self, instance):
         data = {}
@@ -206,15 +561,22 @@ OBJECT_SERIALIZERS = {
 
 
 class PaginatedCollectionSerializer(serializers.Serializer):
+    type = serializers.ChoiceField(choices=['Collection'])
+    totalItems = serializers.IntegerField(min_value=0)
+    actor = serializers.URLField()
+    id = serializers.URLField()
+    first = serializers.URLField()
+    last = serializers.URLField()
 
     def to_representation(self, conf):
         paginator = Paginator(
             conf['items'],
             conf.get('page_size', 20)
         )
-        first = set_query_parameter(conf['id'], page=1)
+        first = funkwhale_utils.set_query_parameter(conf['id'], page=1)
         current = first
-        last = set_query_parameter(conf['id'], page=paginator.num_pages)
+        last = funkwhale_utils.set_query_parameter(
+            conf['id'], page=paginator.num_pages)
         d = {
             'id': conf['id'],
             'actor': conf['actor'].url,
@@ -230,12 +592,35 @@ class PaginatedCollectionSerializer(serializers.Serializer):
 
 
 class CollectionPageSerializer(serializers.Serializer):
+    type = serializers.ChoiceField(choices=['CollectionPage'])
+    totalItems = serializers.IntegerField(min_value=0)
+    items = serializers.ListField()
+    actor = serializers.URLField()
+    id = serializers.URLField()
+    first = serializers.URLField()
+    last = serializers.URLField()
+    next = serializers.URLField(required=False)
+    prev = serializers.URLField(required=False)
+    partOf = serializers.URLField()
+
+    def validate_items(self, v):
+        item_serializer = self.context.get('item_serializer')
+        if not item_serializer:
+            return v
+        raw_items = [item_serializer(data=i, context=self.context) for i in v]
+        for i in raw_items:
+            i.is_valid(raise_exception=True)
+
+        return raw_items
 
     def to_representation(self, conf):
         page = conf['page']
-        first = set_query_parameter(conf['id'], page=1)
-        last = set_query_parameter(conf['id'], page=page.paginator.num_pages)
-        id = set_query_parameter(conf['id'], page=page.number)
+        first = funkwhale_utils.set_query_parameter(
+            conf['id'], page=1)
+        last = funkwhale_utils.set_query_parameter(
+            conf['id'], page=page.paginator.num_pages)
+        id = funkwhale_utils.set_query_parameter(
+            conf['id'], page=page.number)
         d = {
             'id': id,
             'partOf': conf['id'],
@@ -256,11 +641,11 @@ class CollectionPageSerializer(serializers.Serializer):
         }
 
         if page.has_previous():
-            d['prev'] = set_query_parameter(
+            d['prev'] = funkwhale_utils.set_query_parameter(
                 conf['id'], page=page.previous_page_number())
 
-        if page.has_previous():
-            d['next'] = set_query_parameter(
+        if page.has_next():
+            d['next'] = funkwhale_utils.set_query_parameter(
                 conf['id'], page=page.next_page_number())
 
         if self.context.get('include_ap_context', True):
diff --git a/api/funkwhale_api/federation/tasks.py b/api/funkwhale_api/federation/tasks.py
new file mode 100644
index 0000000000000000000000000000000000000000..adc354c4fdaba7f1195e960246e6ff2f6161b107
--- /dev/null
+++ b/api/funkwhale_api/federation/tasks.py
@@ -0,0 +1,111 @@
+import datetime
+import json
+import logging
+
+from django.conf import settings
+from django.utils import timezone
+
+from requests.exceptions import RequestException
+from dynamic_preferences.registries import global_preferences_registry
+
+from funkwhale_api.common import session
+from funkwhale_api.history.models import Listening
+from funkwhale_api.taskapp import celery
+
+from . import actors
+from . import library as lb
+from . import models
+from . import signing
+
+
+logger = logging.getLogger(__name__)
+
+
+@celery.app.task(
+    name='federation.send',
+    autoretry_for=[RequestException],
+    retry_backoff=30,
+    max_retries=5)
+@celery.require_instance(models.Actor, 'actor')
+def send(activity, actor, to):
+    logger.info('Preparing activity delivery to %s', to)
+    auth = signing.get_auth(
+        actor.private_key, actor.private_key_id)
+    for url in to:
+        recipient_actor = actors.get_actor(url)
+        logger.debug('delivering to %s', recipient_actor.inbox_url)
+        logger.debug('activity content: %s', json.dumps(activity))
+        response = session.get_session().post(
+            auth=auth,
+            json=activity,
+            url=recipient_actor.inbox_url,
+            timeout=5,
+            verify=settings.EXTERNAL_REQUESTS_VERIFY_SSL,
+            headers={
+                'Content-Type': 'application/activity+json'
+            }
+        )
+        response.raise_for_status()
+        logger.debug('Remote answered with %s', response.status_code)
+
+
+@celery.app.task(
+    name='federation.scan_library',
+    autoretry_for=[RequestException],
+    retry_backoff=30,
+    max_retries=5)
+@celery.require_instance(models.Library, 'library')
+def scan_library(library, until=None):
+    if not library.federation_enabled:
+        return
+
+    data = lb.get_library_data(library.url)
+    scan_library_page.delay(
+        library_id=library.id, page_url=data['first'], until=until)
+    library.fetched_date = timezone.now()
+    library.tracks_count = data['totalItems']
+    library.save(update_fields=['fetched_date', 'tracks_count'])
+
+
+@celery.app.task(
+    name='federation.scan_library_page',
+    autoretry_for=[RequestException],
+    retry_backoff=30,
+    max_retries=5)
+@celery.require_instance(models.Library, 'library')
+def scan_library_page(library, page_url, until=None):
+    if not library.federation_enabled:
+        return
+
+    data = lb.get_library_page(library, page_url)
+    lts = []
+    for item_serializer in data['items']:
+        item_date = item_serializer.validated_data['published']
+        if until and item_date < until:
+            return
+        lts.append(item_serializer.save())
+
+    next_page = data.get('next')
+    if next_page and next_page != page_url:
+        scan_library_page.delay(library_id=library.id, page_url=next_page)
+
+
+@celery.app.task(name='federation.clean_music_cache')
+def clean_music_cache():
+    preferences = global_preferences_registry.manager()
+    delay = preferences['federation__music_cache_duration']
+    if delay < 1:
+        return  # cache clearing disabled
+
+    candidates = models.LibraryTrack.objects.filter(
+        audio_file__isnull=False
+    ).values_list('local_track_file__track', flat=True)
+    listenings = Listening.objects.filter(
+        creation_date__gte=timezone.now() - datetime.timedelta(minutes=delay),
+        track__pk__in=candidates).values_list('track', flat=True)
+    too_old = set(candidates) - set(listenings)
+
+    to_remove = models.LibraryTrack.objects.filter(
+        local_track_file__track__pk__in=too_old).only('audio_file')
+    for lt in to_remove:
+        lt.audio_file.delete()
diff --git a/api/funkwhale_api/federation/views.py b/api/funkwhale_api/federation/views.py
index 35d8a75a574c98c2a0abb664637dcb27b28d4990..381f87eff2e90f4a64feade856756044393d4f4d 100644
--- a/api/funkwhale_api/federation/views.py
+++ b/api/funkwhale_api/federation/views.py
@@ -1,21 +1,32 @@
 from django import forms
 from django.conf import settings
 from django.core import paginator
+from django.db import transaction
 from django.http import HttpResponse
 from django.urls import reverse
 
-from rest_framework import viewsets
-from rest_framework import views
+from rest_framework import mixins
+from rest_framework import permissions as rest_permissions
 from rest_framework import response
+from rest_framework import views
+from rest_framework import viewsets
 from rest_framework.decorators import list_route, detail_route
+from rest_framework.serializers import ValidationError
 
+from funkwhale_api.common import utils as funkwhale_utils
+from funkwhale_api.common.permissions import HasModelPermission
 from funkwhale_api.music.models import TrackFile
 
+from . import activity
 from . import actors
 from . import authentication
+from . import filters
+from . import library
+from . import models
 from . import permissions
 from . import renderers
 from . import serializers
+from . import tasks
 from . import utils
 from . import webfinger
 
@@ -58,7 +69,7 @@ class InstanceActorViewSet(FederationMixin, viewsets.GenericViewSet):
             data = handler(request.data, actor=request.actor)
         except NotImplementedError:
             return response.Response(status=405)
-        return response.Response(data, status=200)
+        return response.Response({}, status=200)
 
     @detail_route(methods=['get', 'post'])
     def outbox(self, request, *args, **kwargs):
@@ -70,7 +81,7 @@ class InstanceActorViewSet(FederationMixin, viewsets.GenericViewSet):
             data = handler(request.data, actor=request.actor)
         except NotImplementedError:
             return response.Response(status=405)
-        return response.Response(data, status=200)
+        return response.Response({}, status=200)
 
 
 class WellKnownViewSet(FederationMixin, viewsets.GenericViewSet):
@@ -121,7 +132,7 @@ class MusicFilesViewSet(FederationMixin, viewsets.GenericViewSet):
         qs = TrackFile.objects.order_by('-creation_date').select_related(
             'track__artist',
             'track__album__artist'
-        )
+        ).filter(library_track__isnull=True)
         if page is None:
             conf = {
                 'id': utils.full_url(reverse('federation:music:files-list')),
@@ -154,3 +165,127 @@ class MusicFilesViewSet(FederationMixin, viewsets.GenericViewSet):
                 return response.Response(status=404)
 
         return response.Response(data)
+
+
+class LibraryPermission(HasModelPermission):
+    model = models.Library
+
+
+class LibraryViewSet(
+        mixins.RetrieveModelMixin,
+        mixins.UpdateModelMixin,
+        mixins.ListModelMixin,
+        viewsets.GenericViewSet):
+    permission_classes = [LibraryPermission]
+    queryset = models.Library.objects.all().select_related(
+        'actor',
+        'follow',
+    )
+    lookup_field = 'uuid'
+    filter_class = filters.LibraryFilter
+    serializer_class = serializers.APILibrarySerializer
+    ordering_fields = (
+        'id',
+        'creation_date',
+        'fetched_date',
+        'actor__domain',
+        'tracks_count',
+    )
+
+    @list_route(methods=['get'])
+    def fetch(self, request, *args, **kwargs):
+        account = request.GET.get('account')
+        if not account:
+            return response.Response(
+                {'account': 'This field is mandatory'}, status=400)
+
+        data = library.scan_from_account_name(account)
+        return response.Response(data)
+
+    @detail_route(methods=['post'])
+    def scan(self, request, *args, **kwargs):
+        library = self.get_object()
+        serializer = serializers.APILibraryScanSerializer(
+            data=request.data
+        )
+        serializer.is_valid(raise_exception=True)
+        result = tasks.scan_library.delay(
+            library_id=library.pk,
+            until=serializer.validated_data.get('until')
+        )
+        return response.Response({'task': result.id})
+
+    @list_route(methods=['get'])
+    def following(self, request, *args, **kwargs):
+        library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+        queryset = models.Follow.objects.filter(
+            actor=library_actor
+        ).select_related(
+            'actor',
+            'target',
+        ).order_by('-creation_date')
+        filterset = filters.FollowFilter(request.GET, queryset=queryset)
+        final_qs = filterset.qs
+        serializer = serializers.APIFollowSerializer(final_qs, many=True)
+        data = {
+            'results': serializer.data,
+            'count': len(final_qs),
+        }
+        return response.Response(data)
+
+    @list_route(methods=['get', 'patch'])
+    def followers(self, request, *args, **kwargs):
+        if request.method.lower() == 'patch':
+            serializer = serializers.APILibraryFollowUpdateSerializer(
+                data=request.data)
+            serializer.is_valid(raise_exception=True)
+            follow = serializer.save()
+            return response.Response(
+                serializers.APIFollowSerializer(follow).data
+            )
+
+        library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+        queryset = models.Follow.objects.filter(
+            target=library_actor
+        ).select_related(
+            'actor',
+            'target',
+        ).order_by('-creation_date')
+        filterset = filters.FollowFilter(request.GET, queryset=queryset)
+        final_qs = filterset.qs
+        serializer = serializers.APIFollowSerializer(final_qs, many=True)
+        data = {
+            'results': serializer.data,
+            'count': len(final_qs),
+        }
+        return response.Response(data)
+
+    @transaction.atomic
+    def create(self, request, *args, **kwargs):
+        serializer = serializers.APILibraryCreateSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        library = serializer.save()
+        return response.Response(serializer.data, status=201)
+
+
+class LibraryTrackViewSet(
+        mixins.ListModelMixin,
+        viewsets.GenericViewSet):
+    permission_classes = [LibraryPermission]
+    queryset = models.LibraryTrack.objects.all().select_related(
+        'library__actor',
+        'library__follow',
+        'local_track_file',
+    )
+    filter_class = filters.LibraryTrackFilter
+    serializer_class = serializers.APILibraryTrackSerializer
+    ordering_fields = (
+        'id',
+        'artist_name',
+        'title',
+        'album_title',
+        'creation_date',
+        'modification_date',
+        'fetched_date',
+        'published_date',
+    )
diff --git a/api/funkwhale_api/federation/webfinger.py b/api/funkwhale_api/federation/webfinger.py
index 4e97533852421210aead271aa510c40d29478e6e..f5cb996359fdfcd072d4715c06318230596692fa 100644
--- a/api/funkwhale_api/federation/webfinger.py
+++ b/api/funkwhale_api/federation/webfinger.py
@@ -2,8 +2,11 @@ from django import forms
 from django.conf import settings
 from django.urls import reverse
 
+from funkwhale_api.common import session
+
 from . import actors
 from . import utils
+from . import serializers
 
 VALID_RESOURCE_TYPES = ['acct']
 
@@ -23,17 +26,32 @@ def clean_resource(resource_string):
     return resource_type, resource
 
 
-def clean_acct(acct_string):
+def clean_acct(acct_string, ensure_local=True):
     try:
         username, hostname = acct_string.split('@')
     except ValueError:
         raise forms.ValidationError('Invalid format')
 
-    if hostname.lower() != settings.FEDERATION_HOSTNAME:
+    if ensure_local and hostname.lower() != settings.FEDERATION_HOSTNAME:
         raise forms.ValidationError(
             'Invalid hostname {}'.format(hostname))
 
-    if username not in actors.SYSTEM_ACTORS:
+    if ensure_local and username not in actors.SYSTEM_ACTORS:
         raise forms.ValidationError('Invalid username')
 
     return username, hostname
+
+
+def get_resource(resource_string):
+    resource_type, resource = clean_resource(resource_string)
+    username, hostname = clean_acct(resource, ensure_local=False)
+    url = 'https://{}/.well-known/webfinger?resource={}'.format(
+        hostname, resource_string)
+    response = session.get_session().get(
+        url,
+        verify=settings.EXTERNAL_REQUESTS_VERIFY_SSL,
+        timeout=5)
+    response.raise_for_status()
+    serializer = serializers.ActorWebfingerSerializer(data=response.json())
+    serializer.is_valid(raise_exception=True)
+    return serializer.validated_data
diff --git a/api/funkwhale_api/music/forms.py b/api/funkwhale_api/music/forms.py
index 04e4bfe057c0723b161265c63000a2494c687a9d..e68ab73cc2b95030d6dfb284a10b8becbefc9a9e 100644
--- a/api/funkwhale_api/music/forms.py
+++ b/api/funkwhale_api/music/forms.py
@@ -19,5 +19,5 @@ class TranscodeForm(forms.Form):
         choices=BITRATE_CHOICES, required=False)
 
     track_file = forms.ModelChoiceField(
-        queryset=models.TrackFile.objects.all()
+        queryset=models.TrackFile.objects.exclude(audio_file__isnull=True)
     )
diff --git a/api/funkwhale_api/music/migrations/0023_auto_20180407_1010.py b/api/funkwhale_api/music/migrations/0023_auto_20180407_1010.py
index 0539d90f69e059e6ef3fb1bc97f8bd88c52ae079..ed7404ac4f396b32fc43e0879391649333ae52ce 100644
--- a/api/funkwhale_api/music/migrations/0023_auto_20180407_1010.py
+++ b/api/funkwhale_api/music/migrations/0023_auto_20180407_1010.py
@@ -4,7 +4,6 @@ from django.conf import settings
 from django.db import migrations, models
 import django.db.models.deletion
 import django.utils.timezone
-import uuid
 
 
 class Migration(migrations.Migration):
@@ -18,17 +17,17 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='album',
             name='uuid',
-            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+            field=models.UUIDField(db_index=True, null=True, unique=True),
         ),
         migrations.AddField(
             model_name='artist',
             name='uuid',
-            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+            field=models.UUIDField(db_index=True, null=True, unique=True),
         ),
         migrations.AddField(
             model_name='importbatch',
             name='uuid',
-            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+            field=models.UUIDField(db_index=True, null=True, unique=True),
         ),
         migrations.AddField(
             model_name='importjob',
@@ -38,17 +37,17 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='importjob',
             name='uuid',
-            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+            field=models.UUIDField(db_index=True, null=True, unique=True),
         ),
         migrations.AddField(
             model_name='lyrics',
             name='uuid',
-            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+            field=models.UUIDField(db_index=True, null=True, unique=True),
         ),
         migrations.AddField(
             model_name='track',
             name='uuid',
-            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+            field=models.UUIDField(db_index=True, null=True, unique=True),
         ),
         migrations.AddField(
             model_name='trackfile',
@@ -68,12 +67,12 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='trackfile',
             name='uuid',
-            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+            field=models.UUIDField(db_index=True, null=True, unique=True),
         ),
         migrations.AddField(
             model_name='work',
             name='uuid',
-            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+            field=models.UUIDField(db_index=True, null=True, unique=True),
         ),
         migrations.AlterField(
             model_name='importbatch',
diff --git a/api/funkwhale_api/music/migrations/0024_populate_uuid.py b/api/funkwhale_api/music/migrations/0024_populate_uuid.py
new file mode 100644
index 0000000000000000000000000000000000000000..10c78a3db03a9b3be2b8fca24629ae5e58bcd558
--- /dev/null
+++ b/api/funkwhale_api/music/migrations/0024_populate_uuid.py
@@ -0,0 +1,80 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+import os
+import uuid
+from django.db import migrations, models
+
+
+def populate_uuids(apps, schema_editor):
+    models = [
+        'Album',
+        'Artist',
+        'Importbatch',
+        'Importjob',
+        'Lyrics',
+        'Track',
+        'Trackfile',
+        'Work',
+    ]
+    for m in models:
+        kls = apps.get_model('music', m)
+        qs = kls.objects.filter(uuid__isnull=True).only('id')
+        print('Setting uuids for {} ({} objects)'.format(m, len(qs)))
+        for o in qs:
+            o.uuid = uuid.uuid4()
+            o.save(update_fields=['uuid'])
+
+
+def rewind(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('music', '0023_auto_20180407_1010'),
+    ]
+
+    operations = [
+        migrations.RunPython(populate_uuids, rewind),
+        migrations.AlterField(
+            model_name='album',
+            name='uuid',
+            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='artist',
+            name='uuid',
+            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='importbatch',
+            name='uuid',
+            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='importjob',
+            name='uuid',
+            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='lyrics',
+            name='uuid',
+            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='track',
+            name='uuid',
+            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='trackfile',
+            name='uuid',
+            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='work',
+            name='uuid',
+            field=models.UUIDField(db_index=True, default=uuid.uuid4, unique=True),
+        ),
+    ]
diff --git a/api/funkwhale_api/music/permissions.py b/api/funkwhale_api/music/permissions.py
index a8e62f1e770dca45024400d5eff9686da1c50749..61fc65bebf523f916483e67e2c7a311588bfc6de 100644
--- a/api/funkwhale_api/music/permissions.py
+++ b/api/funkwhale_api/music/permissions.py
@@ -3,6 +3,7 @@ from django.conf import settings
 from rest_framework.permissions import BasePermission
 
 from funkwhale_api.federation import actors
+from funkwhale_api.federation import models
 
 
 class Listen(BasePermission):
@@ -20,4 +21,8 @@ class Listen(BasePermission):
             return False
 
         library = actors.SYSTEM_ACTORS['library'].get_actor_instance()
-        return library.followers.filter(url=actor.url).exists()
+        return models.Follow.objects.filter(
+            target=library,
+            actor=actor,
+            approved=True
+        ).exists()
diff --git a/api/funkwhale_api/music/serializers.py b/api/funkwhale_api/music/serializers.py
index 42795dbea87b8114125dea4e8153eabd5c2600e5..b5f69eb1db866225fca4cc147e71a08901194dd8 100644
--- a/api/funkwhale_api/music/serializers.py
+++ b/api/funkwhale_api/music/serializers.py
@@ -3,8 +3,9 @@ from rest_framework import serializers
 from taggit.models import Tag
 
 from funkwhale_api.activity import serializers as activity_serializers
-from funkwhale_api.federation.serializers import AP_CONTEXT
 from funkwhale_api.federation import utils as federation_utils
+from funkwhale_api.federation.models import LibraryTrack
+from funkwhale_api.federation.serializers import AP_CONTEXT
 
 from . import models
 
@@ -153,3 +154,25 @@ class TrackActivitySerializer(activity_serializers.ModelSerializer):
 
     def get_type(self, obj):
         return 'Audio'
+
+
+class SubmitFederationTracksSerializer(serializers.Serializer):
+    library_tracks = serializers.PrimaryKeyRelatedField(
+        many=True,
+        queryset=LibraryTrack.objects.filter(local_track_file__isnull=True),
+    )
+
+    @transaction.atomic
+    def save(self, **kwargs):
+        batch = models.ImportBatch.objects.create(
+            source='federation',
+            **kwargs
+        )
+        for lt in self.validated_data['library_tracks']:
+            models.ImportJob.objects.create(
+                batch=batch,
+                library_track=lt,
+                mbid=lt.mbid,
+                source=lt.url,
+            )
+        return batch
diff --git a/api/funkwhale_api/music/views.py b/api/funkwhale_api/music/views.py
index 0870d98163f99879f0902e017b194c7ced1c33f2..e8ace1b3ab676c2cc6b76f134dbae6668ac2d655 100644
--- a/api/funkwhale_api/music/views.py
+++ b/api/funkwhale_api/music/views.py
@@ -1,6 +1,7 @@
 import ffmpeg
 import os
 import json
+import logging
 import subprocess
 import unicodedata
 import urllib
@@ -22,7 +23,6 @@ from rest_framework import permissions
 from musicbrainzngs import ResponseError
 
 from funkwhale_api.common import utils as funkwhale_utils
-from funkwhale_api.common import session
 from funkwhale_api.federation import actors
 from funkwhale_api.requests.models import ImportRequest
 from funkwhale_api.musicbrainz import api
@@ -40,6 +40,8 @@ from . import serializers
 from . import tasks
 from . import utils
 
+logger = logging.getLogger(__name__)
+
 
 class SearchMixin(object):
     search_fields = []
@@ -203,31 +205,22 @@ class TrackFileViewSet(viewsets.ReadOnlyModelViewSet):
             return Response(status=404)
 
         mt = f.mimetype
+        audio_file = f.audio_file
         try:
             library_track = f.library_track
         except ObjectDoesNotExist:
             library_track = None
-        if library_track and not f.audio_file:
-            # we proxy the response to the remote library
-            # since we did not mirror the file locally
+        if library_track and not audio_file:
+            if not library_track.audio_file:
+                # we need to populate from cache
+                library_track.download_audio()
+            audio_file = library_track.audio_file
             mt = library_track.audio_mimetype
-            file_extension = utils.get_ext_from_type(mt)
-            filename = '{}.{}'.format(f.track.full_name, file_extension)
-            auth = actors.SYSTEM_ACTORS['library'].get_request_auth()
-            remote_response = session.get_session().get(
-                library_track.audio_url,
-                auth=auth,
-                stream=True,
-                headers={
-                    'Content-Type': 'application/activity+json'
-                })
-            response = StreamingHttpResponse(remote_response.iter_content())
-        else:
-            response = Response()
-            filename = f.filename
-            response['X-Accel-Redirect'] = "{}{}".format(
-                settings.PROTECT_FILES_PATH,
-                f.audio_file.url)
+        response = Response()
+        filename = f.filename
+        response['X-Accel-Redirect'] = "{}{}".format(
+            settings.PROTECT_FILES_PATH,
+            audio_file.url)
         filename = "filename*=UTF-8''{}".format(
             urllib.parse.quote(filename))
         response["Content-Disposition"] = "attachment; {}".format(filename)
@@ -247,6 +240,8 @@ class TrackFileViewSet(viewsets.ReadOnlyModelViewSet):
             return Response(form.errors, status=400)
 
         f = form.cleaned_data['track_file']
+        if not f.audio_file:
+            return Response(status=400)
         output_kwargs = {
             'format': form.cleaned_data['to']
         }
@@ -390,6 +385,22 @@ class SubmitViewSet(viewsets.ViewSet):
             data, request, batch=None, import_request=import_request)
         return Response(import_data)
 
+    @list_route(methods=['post'])
+    @transaction.non_atomic_requests
+    def federation(self, request, *args, **kwargs):
+        serializer = serializers.SubmitFederationTracksSerializer(
+            data=request.data)
+        serializer.is_valid(raise_exception=True)
+        batch = serializer.save(submitted_by=request.user)
+        for job in batch.jobs.all():
+            funkwhale_utils.on_commit(
+                tasks.import_job_run.delay,
+                import_job_id=job.pk,
+                use_acoustid=False,
+            )
+
+        return Response({'id': batch.id}, status=201)
+
     @transaction.atomic
     def _import_album(self, data, request, batch=None, import_request=None):
         # we import the whole album here to prevent race conditions that occurs
diff --git a/api/funkwhale_api/radios/models.py b/api/funkwhale_api/radios/models.py
index d9c12534c03f779d497a1a9e7ae43e12cc3bb32f..0273b53871b4536a52b34870ef5ba2e1e93ae078 100644
--- a/api/funkwhale_api/radios/models.py
+++ b/api/funkwhale_api/radios/models.py
@@ -4,6 +4,7 @@ from django.core.exceptions import ValidationError
 from django.contrib.postgres.fields import JSONField
 from django.contrib.contenttypes.fields import GenericForeignKey
 from django.contrib.contenttypes.models import ContentType
+from django.core.serializers.json import DjangoJSONEncoder
 
 from funkwhale_api.music.models import Track
 
@@ -23,7 +24,7 @@ class Radio(models.Model):
     creation_date = models.DateTimeField(default=timezone.now)
     is_public = models.BooleanField(default=False)
     version = models.PositiveIntegerField(default=0)
-    config = JSONField()
+    config = JSONField(encoder=DjangoJSONEncoder)
 
     def get_candidates(self):
         return filters.run(self.config)
diff --git a/api/funkwhale_api/users/models.py b/api/funkwhale_api/users/models.py
index 9516c108f896275837be3161fe80e07dda6273e7..572fa9ddca7c1457db1e6a00956c105874e19c62 100644
--- a/api/funkwhale_api/users/models.py
+++ b/api/funkwhale_api/users/models.py
@@ -31,6 +31,9 @@ class User(AbstractUser):
         'dynamic_preferences.change_globalpreferencemodel': {
             'external_codename': 'settings.change',
         },
+        'federation.change_library': {
+            'external_codename': 'federation.manage',
+        },
     }
 
     privacy_level = fields.get_privacy_field()
diff --git a/api/tests/federation/test_activity.py b/api/tests/federation/test_activity.py
index 09c5e3bf7226fc4f36d9e92d01cf6a43106ed3a7..c2673ff3bd1ff18f7cb1f2486c2e18516e36d86d 100644
--- a/api/tests/federation/test_activity.py
+++ b/api/tests/federation/test_activity.py
@@ -1,14 +1,16 @@
 import uuid
 
 from funkwhale_api.federation import activity
+from funkwhale_api.federation import serializers
 
 
-def test_deliver(nodb_factories, r_mock, mocker):
-    to = nodb_factories['federation.Actor']()
+def test_deliver(factories, r_mock, mocker, settings):
+    settings.CELERY_TASK_ALWAYS_EAGER = True
+    to = factories['federation.Actor']()
     mocker.patch(
         'funkwhale_api.federation.actors.get_actor',
         return_value=to)
-    sender = nodb_factories['federation.Actor']()
+    sender = factories['federation.Actor']()
     ac = {
         'id': 'http://test.federation/activity',
         'type': 'Create',
@@ -38,37 +40,9 @@ def test_deliver(nodb_factories, r_mock, mocker):
 def test_accept_follow(mocker, factories):
     deliver = mocker.patch(
         'funkwhale_api.federation.activity.deliver')
-    actor = factories['federation.Actor']()
-    target = factories['federation.Actor'](local=True)
-    follow = {
-        'actor': actor.url,
-        'type': 'Follow',
-        'id': 'http://test.federation/user#follows/267',
-        'object': target.url,
-    }
-    uid = uuid.uuid4()
-    mocker.patch('uuid.uuid4', return_value=uid)
-    expected_accept = {
-        "@context": [
-            "https://www.w3.org/ns/activitystreams",
-            "https://w3id.org/security/v1",
-            {}
-        ],
-        "id": target.url + '#accepts/follows/{}'.format(uid),
-        "type": "Accept",
-        "actor": target.url,
-        "object": {
-            "id": follow['id'],
-            "type": "Follow",
-            "actor": actor.url,
-            "object": target.url
-        },
-    }
-    activity.accept_follow(
-        target, follow, actor
-    )
+    follow = factories['federation.Follow'](approved=None)
+    expected_accept = serializers.AcceptFollowSerializer(follow).data
+    activity.accept_follow(follow)
     deliver.assert_called_once_with(
-        expected_accept, to=[actor.url], on_behalf_of=target
+        expected_accept, to=[follow.actor.url], on_behalf_of=follow.target
     )
-    follow_instance = actor.emitted_follows.first()
-    assert follow_instance.target == target
diff --git a/api/tests/federation/test_actors.py b/api/tests/federation/test_actors.py
index 090d9b03fb4d9339ccd4121edc3cf502b32de54d..fe70cc6e5cc5d8f97386e61c39f52147463972b6 100644
--- a/api/tests/federation/test_actors.py
+++ b/api/tests/federation/test_actors.py
@@ -7,6 +7,7 @@ from django.utils import timezone
 
 from rest_framework import exceptions
 
+from funkwhale_api.federation import activity
 from funkwhale_api.federation import actors
 from funkwhale_api.federation import models
 from funkwhale_api.federation import serializers
@@ -261,8 +262,6 @@ def test_test_actor_handles_follow(
     deliver = mocker.patch(
         'funkwhale_api.federation.activity.deliver')
     actor = factories['federation.Actor']()
-    now = timezone.now()
-    mocker.patch('django.utils.timezone.now', return_value=now)
     accept_follow = mocker.patch(
         'funkwhale_api.federation.activity.accept_follow')
     test_actor = actors.SYSTEM_ACTORS['test'].get_actor_instance()
@@ -272,28 +271,15 @@ def test_test_actor_handles_follow(
         'id': 'http://test.federation/user#follows/267',
         'object': test_actor.url,
     }
-    uid = uuid.uuid4()
-    mocker.patch('uuid.uuid4', return_value=uid)
-    expected_follow = {
-        '@context': serializers.AP_CONTEXT,
-        'actor': test_actor.url,
-        'id': test_actor.url + '#follows/{}'.format(uid),
-        'object': actor.url,
-        'type': 'Follow'
-    }
-
     actors.SYSTEM_ACTORS['test'].post_inbox(data, actor=actor)
-    accept_follow.assert_called_once_with(
-        test_actor, data, actor
+    follow = models.Follow.objects.get(target=test_actor, approved=True)
+    follow_back = models.Follow.objects.get(actor=test_actor, approved=None)
+    accept_follow.assert_called_once_with(follow)
+    deliver.assert_called_once_with(
+        serializers.FollowSerializer(follow_back).data,
+        on_behalf_of=test_actor,
+        to=[actor.url]
     )
-    expected_calls = [
-        mocker.call(
-            expected_follow,
-            to=[actor.url],
-            on_behalf_of=test_actor,
-        )
-    ]
-    deliver.assert_has_calls(expected_calls)
 
 
 def test_test_actor_handles_undo_follow(
@@ -346,12 +332,10 @@ def test_library_actor_handles_follow_manual_approval(
     }
 
     library_actor.system_conf.post_inbox(data, actor=actor)
-    fr = library_actor.received_follow_requests.first()
+    follow = library_actor.received_follows.first()
 
-    assert library_actor.received_follow_requests.count() == 1
-    assert fr.target == library_actor
-    assert fr.actor == actor
-    assert fr.approved is None
+    assert follow.actor == actor
+    assert follow.approved is None
 
 
 def test_library_actor_handles_follow_auto_approval(
@@ -369,10 +353,27 @@ def test_library_actor_handles_follow_auto_approval(
     }
     library_actor.system_conf.post_inbox(data, actor=actor)
 
-    assert library_actor.received_follow_requests.count() == 0
-    accept_follow.assert_called_once_with(
-        library_actor, data, actor
+    follow = library_actor.received_follows.first()
+
+    assert follow.actor == actor
+    assert follow.approved is True
+
+
+def test_library_actor_handles_accept(
+        mocker, factories):
+    library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    actor = factories['federation.Actor']()
+    pending_follow = factories['federation.Follow'](
+        actor=library_actor,
+        target=actor,
+        approved=None,
     )
+    serializer = serializers.AcceptFollowSerializer(pending_follow)
+    library_actor.system_conf.post_inbox(serializer.data, actor=actor)
+
+    pending_follow.refresh_from_db()
+
+    assert pending_follow.approved is True
 
 
 def test_library_actor_handle_create_audio_no_library(mocker, factories):
diff --git a/api/tests/federation/test_authentication.py b/api/tests/federation/test_authentication.py
index c6a97a07a75fc52065f4a7cc7a1a710015788a86..2f69e4d4f1dcd2718e7148ebb9887c22e2def3df 100644
--- a/api/tests/federation/test_authentication.py
+++ b/api/tests/federation/test_authentication.py
@@ -10,8 +10,10 @@ def test_authenticate(factories, mocker, api_request):
         'funkwhale_api.federation.actors.get_actor_data',
         return_value={
             'id': actor_url,
+            'type': 'Person',
             'outbox': 'https://test.com',
             'inbox': 'https://test.com',
+            'preferredUsername': 'test',
             'publicKey': {
                 'publicKeyPem': public.decode('utf-8'),
                 'owner': actor_url,
diff --git a/api/tests/federation/test_library.py b/api/tests/federation/test_library.py
new file mode 100644
index 0000000000000000000000000000000000000000..7a3abf5d8375ee63598998b40a3b8977b2942198
--- /dev/null
+++ b/api/tests/federation/test_library.py
@@ -0,0 +1,70 @@
+from funkwhale_api.federation import library
+from funkwhale_api.federation import serializers
+
+
+def test_library_scan_from_account_name(mocker, factories):
+    actor = factories['federation.Actor'](
+        preferred_username='library',
+        domain='test.library'
+    )
+    get_resource_result = {'actor_url': actor.url}
+    get_resource = mocker.patch(
+        'funkwhale_api.federation.webfinger.get_resource',
+        return_value=get_resource_result)
+
+    actor_data = serializers.ActorSerializer(actor).data
+    actor_data['manuallyApprovesFollowers'] = False
+    actor_data['url'] = [{
+        'type': 'Link',
+        'name': 'library',
+        'mediaType': 'application/activity+json',
+        'href': 'https://test.library'
+    }]
+    get_actor_data = mocker.patch(
+        'funkwhale_api.federation.actors.get_actor_data',
+        return_value=actor_data)
+
+    get_library_data_result = {'test': 'test'}
+    get_library_data = mocker.patch(
+        'funkwhale_api.federation.library.get_library_data',
+        return_value=get_library_data_result)
+
+    result = library.scan_from_account_name('library@test.actor')
+
+    get_resource.assert_called_once_with('acct:library@test.actor')
+    get_actor_data.assert_called_once_with(actor.url)
+    get_library_data.assert_called_once_with(actor_data['url'][0]['href'])
+
+    assert result == {
+        'webfinger': get_resource_result,
+        'actor': actor_data,
+        'library': get_library_data_result,
+        'local': {
+            'following': False,
+            'awaiting_approval': False,
+        },
+    }
+
+
+def test_get_library_data(r_mock, factories):
+    actor = factories['federation.Actor']()
+    url = 'https://test.library'
+    conf = {
+        'id': url,
+        'items': [],
+        'actor': actor,
+        'page_size': 5,
+    }
+    data = serializers.PaginatedCollectionSerializer(conf).data
+    r_mock.get(url, json=data)
+
+    result = library.get_library_data(url)
+    for f in ['totalItems', 'actor', 'id', 'type']:
+        assert result[f] == data[f]
+
+
+def test_get_library_data_requires_authentication(r_mock, factories):
+    url = 'https://test.library'
+    r_mock.get(url, status_code=403)
+    result = library.get_library_data(url)
+    assert result['errors'] == ['Permission denied while scanning library']
diff --git a/api/tests/federation/test_models.py b/api/tests/federation/test_models.py
index b17b6eb65a46da037191c5697015526f0ea0084c..ae158e659fc105bf18a96264cc6968fdab387719 100644
--- a/api/tests/federation/test_models.py
+++ b/api/tests/federation/test_models.py
@@ -35,50 +35,6 @@ def test_follow_federation_url(factories):
     assert follow.get_federation_url() == expected
 
 
-def test_follow_request_approve(mocker, factories):
-    uid = uuid.uuid4()
-    mocker.patch('uuid.uuid4', return_value=uid)
-    accept_follow = mocker.patch(
-        'funkwhale_api.federation.activity.accept_follow')
-    fr = factories['federation.FollowRequest'](target__local=True)
-    fr.approve()
-
-    follow = {
-        '@context': serializers.AP_CONTEXT,
-        'actor': fr.actor.url,
-        'id': fr.actor.url + '#follows/{}'.format(uid),
-        'object': fr.target.url,
-        'type': 'Follow'
-    }
-
-    assert fr.approved is True
-    assert list(fr.target.followers.all()) == [fr.actor]
-    accept_follow.assert_called_once_with(
-        fr.target, follow, fr.actor
-    )
-
-
-def test_follow_request_approve_non_local(mocker, factories):
-    uid = uuid.uuid4()
-    mocker.patch('uuid.uuid4', return_value=uid)
-    accept_follow = mocker.patch(
-        'funkwhale_api.federation.activity.accept_follow')
-    fr = factories['federation.FollowRequest']()
-    fr.approve()
-
-    assert fr.approved is True
-    assert list(fr.target.followers.all()) == [fr.actor]
-    accept_follow.assert_not_called()
-
-
-def test_follow_request_refused(mocker, factories):
-    fr = factories['federation.FollowRequest']()
-    fr.refuse()
-
-    assert fr.approved is False
-    assert fr.target.followers.count() == 0
-
-
 def test_library_model_unique_per_actor(factories):
     library = factories['federation.Library']()
     with pytest.raises(db.IntegrityError):
diff --git a/api/tests/federation/test_serializers.py b/api/tests/federation/test_serializers.py
index 45778ed484ca2022e455c43b1e18f425dde62093..6d33a529de7d197d0b88557cc38ee8c17ff46ce4 100644
--- a/api/tests/federation/test_serializers.py
+++ b/api/tests/federation/test_serializers.py
@@ -1,4 +1,5 @@
 import arrow
+import pytest
 
 from django.urls import reverse
 from django.core.paginator import Paginator
@@ -34,7 +35,7 @@ def test_actor_serializer_from_ap(db):
     }
 
     serializer = serializers.ActorSerializer(data=payload)
-    assert serializer.is_valid()
+    assert serializer.is_valid(raise_exception=True)
 
     actor = serializer.build()
 
@@ -65,7 +66,7 @@ def test_actor_serializer_only_mandatory_field_from_ap(db):
     }
 
     serializer = serializers.ActorSerializer(data=payload)
-    assert serializer.is_valid()
+    assert serializer.is_valid(raise_exception=True)
 
     actor = serializer.build()
 
@@ -170,6 +171,184 @@ def test_follow_serializer_to_ap(factories):
     assert serializer.data == expected
 
 
+def test_follow_serializer_save(factories):
+    actor = factories['federation.Actor']()
+    target = factories['federation.Actor']()
+
+    data = expected = {
+        'id': 'https://test.follow',
+        'type': 'Follow',
+        'actor': actor.url,
+        'object': target.url,
+    }
+    serializer = serializers.FollowSerializer(data=data)
+
+    assert serializer.is_valid(raise_exception=True)
+
+    follow = serializer.save()
+
+    assert follow.pk is not None
+    assert follow.actor == actor
+    assert follow.target == target
+    assert follow.approved is None
+
+
+def test_follow_serializer_save_validates_on_context(factories):
+    actor = factories['federation.Actor']()
+    target = factories['federation.Actor']()
+    impostor = factories['federation.Actor']()
+
+    data = expected = {
+        'id': 'https://test.follow',
+        'type': 'Follow',
+        'actor': actor.url,
+        'object': target.url,
+    }
+    serializer = serializers.FollowSerializer(
+        data=data,
+        context={'follow_actor': impostor, 'follow_target': impostor})
+
+    assert serializer.is_valid() is False
+
+    assert 'actor' in serializer.errors
+    assert 'object' in serializer.errors
+
+
+def test_accept_follow_serializer_representation(factories):
+    follow = factories['federation.Follow'](approved=None)
+
+    expected = {
+        '@context': [
+            'https://www.w3.org/ns/activitystreams',
+            'https://w3id.org/security/v1',
+            {},
+        ],
+        'id': follow.get_federation_url() + '/accept',
+        'type': 'Accept',
+        'actor': follow.target.url,
+        'object': serializers.FollowSerializer(follow).data,
+    }
+
+    serializer = serializers.AcceptFollowSerializer(follow)
+
+    assert serializer.data == expected
+
+
+def test_accept_follow_serializer_save(factories):
+    follow = factories['federation.Follow'](approved=None)
+
+    data = {
+        '@context': [
+            'https://www.w3.org/ns/activitystreams',
+            'https://w3id.org/security/v1',
+            {},
+        ],
+        'id': follow.get_federation_url() + '/accept',
+        'type': 'Accept',
+        'actor': follow.target.url,
+        'object': serializers.FollowSerializer(follow).data,
+    }
+
+    serializer = serializers.AcceptFollowSerializer(data=data)
+    assert serializer.is_valid(raise_exception=True)
+    serializer.save()
+
+    follow.refresh_from_db()
+
+    assert follow.approved is True
+
+
+def test_accept_follow_serializer_validates_on_context(factories):
+    follow = factories['federation.Follow'](approved=None)
+    impostor = factories['federation.Actor']()
+    data = {
+        '@context': [
+            'https://www.w3.org/ns/activitystreams',
+            'https://w3id.org/security/v1',
+            {},
+        ],
+        'id': follow.get_federation_url() + '/accept',
+        'type': 'Accept',
+        'actor': impostor.url,
+        'object': serializers.FollowSerializer(follow).data,
+    }
+
+    serializer = serializers.AcceptFollowSerializer(
+        data=data,
+        context={'follow_actor': impostor, 'follow_target': impostor})
+
+    assert serializer.is_valid() is False
+    assert 'actor' in serializer.errors['object']
+    assert 'object' in serializer.errors['object']
+
+
+def test_undo_follow_serializer_representation(factories):
+    follow = factories['federation.Follow'](approved=True)
+
+    expected = {
+        '@context': [
+            'https://www.w3.org/ns/activitystreams',
+            'https://w3id.org/security/v1',
+            {},
+        ],
+        'id': follow.get_federation_url() + '/undo',
+        'type': 'Undo',
+        'actor': follow.actor.url,
+        'object': serializers.FollowSerializer(follow).data,
+    }
+
+    serializer = serializers.UndoFollowSerializer(follow)
+
+    assert serializer.data == expected
+
+
+def test_undo_follow_serializer_save(factories):
+    follow = factories['federation.Follow'](approved=True)
+
+    data = {
+        '@context': [
+            'https://www.w3.org/ns/activitystreams',
+            'https://w3id.org/security/v1',
+            {},
+        ],
+        'id': follow.get_federation_url() + '/undo',
+        'type': 'Undo',
+        'actor': follow.actor.url,
+        'object': serializers.FollowSerializer(follow).data,
+    }
+
+    serializer = serializers.UndoFollowSerializer(data=data)
+    assert serializer.is_valid(raise_exception=True)
+    serializer.save()
+
+    with pytest.raises(models.Follow.DoesNotExist):
+        follow.refresh_from_db()
+
+
+def test_undo_follow_serializer_validates_on_context(factories):
+    follow = factories['federation.Follow'](approved=True)
+    impostor = factories['federation.Actor']()
+    data = {
+        '@context': [
+            'https://www.w3.org/ns/activitystreams',
+            'https://w3id.org/security/v1',
+            {},
+        ],
+        'id': follow.get_federation_url() + '/undo',
+        'type': 'Undo',
+        'actor': impostor.url,
+        'object': serializers.FollowSerializer(follow).data,
+    }
+
+    serializer = serializers.UndoFollowSerializer(
+        data=data,
+        context={'follow_actor': impostor, 'follow_target': impostor})
+
+    assert serializer.is_valid() is False
+    assert 'actor' in serializer.errors['object']
+    assert 'object' in serializer.errors['object']
+
+
 def test_paginated_collection_serializer(factories):
     tfs = factories['music.TrackFile'].create_batch(size=5)
     actor = factories['federation.Actor'](local=True)
@@ -201,6 +380,71 @@ def test_paginated_collection_serializer(factories):
     assert serializer.data == expected
 
 
+def test_paginated_collection_serializer_validation():
+    data = {
+        'type': 'Collection',
+        'id': 'https://test.federation/test',
+        'totalItems': 5,
+        'actor': 'http://test.actor',
+        'first': 'https://test.federation/test?page=1',
+        'last': 'https://test.federation/test?page=1',
+        'items': []
+    }
+
+    serializer = serializers.PaginatedCollectionSerializer(
+        data=data
+    )
+
+    assert serializer.is_valid(raise_exception=True) is True
+    assert serializer.validated_data['totalItems'] == 5
+    assert serializer.validated_data['id'] == data['id']
+    assert serializer.validated_data['actor'] == data['actor']
+
+
+def test_collection_page_serializer_validation():
+    base = 'https://test.federation/test'
+    data = {
+        'type': 'CollectionPage',
+        'id': base + '?page=2',
+        'totalItems': 5,
+        'actor': 'https://test.actor',
+        'items': [],
+        'first': 'https://test.federation/test?page=1',
+        'last': 'https://test.federation/test?page=3',
+        'prev': base + '?page=1',
+        'next': base + '?page=3',
+        'partOf': base,
+    }
+
+    serializer = serializers.CollectionPageSerializer(
+        data=data
+    )
+
+    assert serializer.is_valid(raise_exception=True) is True
+    assert serializer.validated_data['totalItems'] == 5
+    assert serializer.validated_data['id'] == data['id']
+    assert serializer.validated_data['actor'] == data['actor']
+    assert serializer.validated_data['items'] == []
+    assert serializer.validated_data['prev'] == data['prev']
+    assert serializer.validated_data['next'] == data['next']
+    assert serializer.validated_data['partOf'] == data['partOf']
+
+
+def test_collection_page_serializer_can_validate_child():
+    base = 'https://test.federation/test'
+    data = {
+        'items': [{'in': 'valid'}],
+    }
+
+    serializer = serializers.CollectionPageSerializer(
+        data=data,
+        context={'item_serializer': serializers.AudioSerializer}
+    )
+
+    assert serializer.is_valid() is False
+    assert 'items' in serializer.errors
+
+
 def test_collection_page_serializer(factories):
     tfs = factories['music.TrackFile'].create_batch(size=5)
     actor = factories['federation.Actor'](local=True)
@@ -262,6 +506,25 @@ def test_activity_pub_audio_serializer_to_library_track(factories):
     assert lt.published_date == arrow.get(audio['published'])
 
 
+def test_activity_pub_audio_serializer_to_library_track_no_duplicate(
+        factories):
+    remote_library = factories['federation.Library']()
+    audio = factories['federation.Audio']()
+    serializer1 = serializers.AudioSerializer(
+        data=audio, context={'library': remote_library})
+    serializer2 = serializers.AudioSerializer(
+        data=audio, context={'library': remote_library})
+
+    assert serializer1.is_valid() is True
+    assert serializer2.is_valid() is True
+
+    lt1 = serializer1.save()
+    lt2 = serializer2.save()
+
+    assert lt1 == lt2
+    assert models.LibraryTrack.objects.count() == 1
+
+
 def test_activity_pub_audio_serializer_to_ap(factories):
     tf = factories['music.TrackFile'](mimetype='audio/mp3')
     library = actors.SYSTEM_ACTORS['library'].get_actor_instance()
@@ -375,3 +638,46 @@ def test_collection_serializer_to_ap(factories):
         collection, context={'actor': library, 'id': 'https://test.id'})
 
     assert serializer.data == expected
+
+
+def test_api_library_create_serializer_save(factories, r_mock):
+    library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    actor = factories['federation.Actor']()
+    follow = factories['federation.Follow'](
+        target=actor,
+        actor=library_actor,
+    )
+    actor_data = serializers.ActorSerializer(actor).data
+    actor_data['url'] = [{
+        'href': 'https://test.library',
+        'name': 'library',
+        'type': 'Link',
+    }]
+    library_conf = {
+        'id': 'https://test.library',
+        'items': range(10),
+        'actor': actor,
+        'page_size': 5,
+    }
+    library_data = serializers.PaginatedCollectionSerializer(library_conf).data
+    r_mock.get(actor.url, json=actor_data)
+    r_mock.get('https://test.library', json=library_data)
+    data = {
+        'actor': actor.url,
+        'autoimport': False,
+        'federation_enabled': True,
+        'download_files': False,
+    }
+
+    serializer = serializers.APILibraryCreateSerializer(data=data)
+    assert serializer.is_valid(raise_exception=True) is True
+    library = serializer.save()
+    follow = models.Follow.objects.get(
+        target=actor, actor=library_actor, approved=None)
+
+    assert library.autoimport is data['autoimport']
+    assert library.federation_enabled is data['federation_enabled']
+    assert library.download_files is data['download_files']
+    assert library.tracks_count == 10
+    assert library.actor == actor
+    assert library.follow == follow
diff --git a/api/tests/federation/test_tasks.py b/api/tests/federation/test_tasks.py
new file mode 100644
index 0000000000000000000000000000000000000000..506fbc1fe95be93320161e28f626f450f7b4000f
--- /dev/null
+++ b/api/tests/federation/test_tasks.py
@@ -0,0 +1,140 @@
+import datetime
+
+from django.core.paginator import Paginator
+from django.utils import timezone
+
+from funkwhale_api.federation import serializers
+from funkwhale_api.federation import tasks
+
+
+def test_scan_library_does_nothing_if_federation_disabled(mocker, factories):
+    library = factories['federation.Library'](federation_enabled=False)
+    tasks.scan_library(library_id=library.pk)
+
+    assert library.tracks.count() == 0
+
+
+def test_scan_library_page_does_nothing_if_federation_disabled(
+        mocker, factories):
+    library = factories['federation.Library'](federation_enabled=False)
+    tasks.scan_library_page(library_id=library.pk, page_url=None)
+
+    assert library.tracks.count() == 0
+
+
+def test_scan_library_fetches_page_and_calls_scan_page(
+        mocker, factories, r_mock):
+    now = timezone.now()
+    library = factories['federation.Library'](federation_enabled=True)
+    collection_conf = {
+        'actor': library.actor,
+        'id': library.url,
+        'page_size': 10,
+        'items': range(10),
+    }
+    collection = serializers.PaginatedCollectionSerializer(collection_conf)
+    scan_page = mocker.patch(
+        'funkwhale_api.federation.tasks.scan_library_page.delay')
+    r_mock.get(collection_conf['id'], json=collection.data)
+    tasks.scan_library(library_id=library.pk)
+
+    scan_page.assert_called_once_with(
+        library_id=library.id,
+        page_url=collection.data['first'],
+        until=None,
+    )
+    library.refresh_from_db()
+    assert library.fetched_date > now
+
+
+def test_scan_page_fetches_page_and_creates_tracks(
+        mocker, factories, r_mock):
+    library = factories['federation.Library'](federation_enabled=True)
+    tfs = factories['music.TrackFile'].create_batch(size=5)
+    page_conf = {
+        'actor': library.actor,
+        'id': library.url,
+        'page': Paginator(tfs, 5).page(1),
+        'item_serializer': serializers.AudioSerializer,
+    }
+    page = serializers.CollectionPageSerializer(page_conf)
+    r_mock.get(page.data['id'], json=page.data)
+
+    tasks.scan_library_page(library_id=library.pk, page_url=page.data['id'])
+
+    lts = list(library.tracks.all().order_by('-published_date'))
+    assert len(lts) == 5
+
+
+def test_scan_page_trigger_next_page_scan_skip_if_same(
+        mocker, factories, r_mock):
+    patched_scan = mocker.patch(
+        'funkwhale_api.federation.tasks.scan_library_page.delay'
+    )
+    library = factories['federation.Library'](federation_enabled=True)
+    tfs = factories['music.TrackFile'].create_batch(size=1)
+    page_conf = {
+        'actor': library.actor,
+        'id': library.url,
+        'page': Paginator(tfs, 3).page(1),
+        'item_serializer': serializers.AudioSerializer,
+    }
+    page = serializers.CollectionPageSerializer(page_conf)
+    data = page.data
+    data['next'] = data['id']
+    r_mock.get(page.data['id'], json=data)
+
+    tasks.scan_library_page(library_id=library.pk, page_url=data['id'])
+    patched_scan.assert_not_called()
+
+
+def test_scan_page_stops_once_until_is_reached(
+        mocker, factories, r_mock):
+    library = factories['federation.Library'](federation_enabled=True)
+    tfs = list(reversed(factories['music.TrackFile'].create_batch(size=5)))
+    page_conf = {
+        'actor': library.actor,
+        'id': library.url,
+        'page': Paginator(tfs, 3).page(1),
+        'item_serializer': serializers.AudioSerializer,
+    }
+    page = serializers.CollectionPageSerializer(page_conf)
+    r_mock.get(page.data['id'], json=page.data)
+
+    tasks.scan_library_page(
+        library_id=library.pk,
+        page_url=page.data['id'],
+        until=tfs[1].creation_date)
+
+    lts = list(library.tracks.all().order_by('-published_date'))
+    assert len(lts) == 2
+    for i, tf in enumerate(tfs[:1]):
+        assert tf.creation_date == lts[i].published_date
+
+
+def test_clean_federation_music_cache_if_no_listen(preferences, factories):
+    preferences['federation__music_cache_duration'] = 60
+    lt1 = factories['federation.LibraryTrack'](with_audio_file=True)
+    lt2 = factories['federation.LibraryTrack'](with_audio_file=True)
+    lt3 = factories['federation.LibraryTrack'](with_audio_file=True)
+    tf1 = factories['music.TrackFile'](library_track=lt1)
+    tf2 = factories['music.TrackFile'](library_track=lt2)
+    tf3 = factories['music.TrackFile'](library_track=lt3)
+
+    # we listen to the first one, and the second one (but weeks ago)
+    listening1 = factories['history.Listening'](
+        track=tf1.track,
+        creation_date=timezone.now())
+    listening2 = factories['history.Listening'](
+        track=tf2.track,
+        creation_date=timezone.now() - datetime.timedelta(minutes=61))
+
+    tasks.clean_music_cache()
+
+    lt1.refresh_from_db()
+    lt2.refresh_from_db()
+    lt3.refresh_from_db()
+
+    assert bool(lt1.audio_file) is True
+    assert bool(lt2.audio_file) is False
+    assert bool(lt3.audio_file) is False
diff --git a/api/tests/federation/test_views.py b/api/tests/federation/test_views.py
index c26810dadf35b2088e1b7154801fbd728eeebdb2..8c5235b8bbeb0f8a42b5a79296d4902067312a2a 100644
--- a/api/tests/federation/test_views.py
+++ b/api/tests/federation/test_views.py
@@ -1,9 +1,12 @@
-from django.urls import reverse
 from django.core.paginator import Paginator
+from django.urls import reverse
+from django.utils import timezone
 
 import pytest
 
 from funkwhale_api.federation import actors
+from funkwhale_api.federation import activity
+from funkwhale_api.federation import models
 from funkwhale_api.federation import serializers
 from funkwhale_api.federation import utils
 from funkwhale_api.federation import webfinger
@@ -117,6 +120,19 @@ def test_audio_file_list_actor_page(
     assert response.data == expected
 
 
+def test_audio_file_list_actor_page_exclude_federated_files(
+        db, settings, api_client, factories):
+    settings.FEDERATION_MUSIC_NEEDS_APPROVAL = False
+    library = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    tfs = factories['music.TrackFile'].create_batch(size=5, federation=True)
+
+    url = reverse('federation:music:files-list')
+    response = api_client.get(url)
+
+    assert response.status_code == 200
+    assert response.data['totalItems'] == 0
+
+
 def test_audio_file_list_actor_page_error(
         db, settings, api_client, factories):
     settings.FEDERATION_MUSIC_NEEDS_APPROVAL = False
@@ -151,3 +167,216 @@ def test_library_actor_includes_library_link(db, settings, api_client):
     ]
     assert response.status_code == 200
     assert response.data['url'] == expected_links
+
+
+def test_can_fetch_library(superuser_api_client, mocker):
+    result = {'test': 'test'}
+    scan = mocker.patch(
+        'funkwhale_api.federation.library.scan_from_account_name',
+        return_value=result)
+
+    url = reverse('api:v1:federation:libraries-fetch')
+    response = superuser_api_client.get(
+        url, data={'account': 'test@test.library'})
+
+    assert response.status_code == 200
+    assert response.data == result
+    scan.assert_called_once_with('test@test.library')
+
+
+def test_follow_library(superuser_api_client, mocker, factories, r_mock):
+    library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    actor = factories['federation.Actor']()
+    follow = {'test': 'follow'}
+    on_commit = mocker.patch(
+        'funkwhale_api.common.utils.on_commit')
+    actor_data = serializers.ActorSerializer(actor).data
+    actor_data['url'] = [{
+        'href': 'https://test.library',
+        'name': 'library',
+        'type': 'Link',
+    }]
+    library_conf = {
+        'id': 'https://test.library',
+        'items': range(10),
+        'actor': actor,
+        'page_size': 5,
+    }
+    library_data = serializers.PaginatedCollectionSerializer(library_conf).data
+    r_mock.get(actor.url, json=actor_data)
+    r_mock.get('https://test.library', json=library_data)
+    data = {
+        'actor': actor.url,
+        'autoimport': False,
+        'federation_enabled': True,
+        'download_files': False,
+    }
+
+    url = reverse('api:v1:federation:libraries-list')
+    response = superuser_api_client.post(
+        url, data)
+
+    assert response.status_code == 201
+
+    follow = models.Follow.objects.get(
+        actor=library_actor,
+        target=actor,
+        approved=None,
+    )
+    library = follow.library
+
+    assert response.data == serializers.APILibraryCreateSerializer(
+        library).data
+
+    on_commit.assert_called_once_with(
+        activity.deliver,
+        serializers.FollowSerializer(follow).data,
+        on_behalf_of=library_actor,
+        to=[actor.url]
+    )
+
+
+def test_can_list_system_actor_following(factories, superuser_api_client):
+    library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    follow1 = factories['federation.Follow'](actor=library_actor)
+    follow2 = factories['federation.Follow']()
+
+    url = reverse('api:v1:federation:libraries-following')
+    response = superuser_api_client.get(url)
+
+    assert response.status_code == 200
+    assert response.data['results'] == [
+        serializers.APIFollowSerializer(follow1).data
+    ]
+
+
+def test_can_list_system_actor_followers(factories, superuser_api_client):
+    library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    follow1 = factories['federation.Follow'](actor=library_actor)
+    follow2 = factories['federation.Follow'](target=library_actor)
+
+    url = reverse('api:v1:federation:libraries-followers')
+    response = superuser_api_client.get(url)
+
+    assert response.status_code == 200
+    assert response.data['results'] == [
+        serializers.APIFollowSerializer(follow2).data
+    ]
+
+
+def test_can_list_libraries(factories, superuser_api_client):
+    library1 = factories['federation.Library']()
+    library2 = factories['federation.Library']()
+
+    url = reverse('api:v1:federation:libraries-list')
+    response = superuser_api_client.get(url)
+
+    assert response.status_code == 200
+    assert response.data['results'] == [
+        serializers.APILibrarySerializer(library1).data,
+        serializers.APILibrarySerializer(library2).data,
+    ]
+
+
+def test_can_detail_library(factories, superuser_api_client):
+    library = factories['federation.Library']()
+
+    url = reverse(
+        'api:v1:federation:libraries-detail',
+        kwargs={'uuid': str(library.uuid)})
+    response = superuser_api_client.get(url)
+
+    assert response.status_code == 200
+    assert response.data == serializers.APILibrarySerializer(library).data
+
+
+def test_can_patch_library(factories, superuser_api_client):
+    library = factories['federation.Library']()
+    data = {
+        'federation_enabled': not library.federation_enabled,
+        'download_files': not library.download_files,
+        'autoimport': not library.autoimport,
+    }
+    url = reverse(
+        'api:v1:federation:libraries-detail',
+        kwargs={'uuid': str(library.uuid)})
+    response = superuser_api_client.patch(url, data)
+
+    assert response.status_code == 200
+    library.refresh_from_db()
+
+    for k, v in data.items():
+        assert getattr(library, k) == v
+
+
+def test_scan_library(factories, mocker, superuser_api_client):
+    scan = mocker.patch(
+        'funkwhale_api.federation.tasks.scan_library.delay',
+        return_value=mocker.Mock(id='id'))
+    library = factories['federation.Library']()
+    now = timezone.now()
+    data = {
+        'until': now,
+    }
+    url = reverse(
+        'api:v1:federation:libraries-scan',
+        kwargs={'uuid': str(library.uuid)})
+    response = superuser_api_client.post(url, data)
+
+    assert response.status_code == 200
+    assert response.data == {'task': 'id'}
+    scan.assert_called_once_with(
+        library_id=library.pk,
+        until=now
+    )
+
+
+def test_list_library_tracks(factories, superuser_api_client):
+    library = factories['federation.Library']()
+    lts = list(reversed(factories['federation.LibraryTrack'].create_batch(
+        size=5, library=library)))
+    factories['federation.LibraryTrack'].create_batch(size=5)
+    url = reverse('api:v1:federation:library-tracks-list')
+    response = superuser_api_client.get(url, {'library': library.uuid})
+
+    assert response.status_code == 200
+    assert response.data == {
+        'results': serializers.APILibraryTrackSerializer(lts, many=True).data,
+        'count': 5,
+        'previous': None,
+        'next': None,
+    }
+
+
+def test_can_update_follow_status(factories, superuser_api_client, mocker):
+    patched_accept = mocker.patch(
+        'funkwhale_api.federation.activity.accept_follow'
+    )
+    library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    follow = factories['federation.Follow'](target=library_actor)
+
+    payload = {
+        'follow': follow.pk,
+        'approved': True
+    }
+    url = reverse('api:v1:federation:libraries-followers')
+    response = superuser_api_client.patch(url, payload)
+    follow.refresh_from_db()
+
+    assert response.status_code == 200
+    assert follow.approved is True
+    patched_accept.assert_called_once_with(follow)
+
+
+def test_can_filter_pending_follows(factories, superuser_api_client):
+    library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    follow = factories['federation.Follow'](
+        target=library_actor,
+        approved=True)
+
+    params = {'pending': True}
+    url = reverse('api:v1:federation:libraries-followers')
+    response = superuser_api_client.get(url, params)
+
+    assert response.status_code == 200
+    assert len(response.data['results']) == 0
diff --git a/api/tests/federation/test_webfinger.py b/api/tests/federation/test_webfinger.py
index 96258455ae6fe1f60e330d7768a58d6e94fc91fa..4b8dca207ad57b36ee878e68009b0a778b72bcfd 100644
--- a/api/tests/federation/test_webfinger.py
+++ b/api/tests/federation/test_webfinger.py
@@ -40,3 +40,29 @@ def test_webfinger_clean_acct_errors(resource, message, settings):
         webfinger.clean_resource(resource)
 
         assert message == str(excinfo)
+
+
+def test_webfinger_get_resource(r_mock):
+    resource = 'acct:test@test.webfinger'
+    payload = {
+        'subject': resource,
+        'aliases': ['https://test.webfinger'],
+        'links': [
+            {
+                'rel': 'self',
+                'type': 'application/activity+json',
+                'href': 'https://test.webfinger/user/test'
+            }
+        ]
+    }
+    r_mock.get(
+        'https://test.webfinger/.well-known/webfinger?resource={}'.format(
+            resource
+        ),
+        json=payload
+    )
+
+    data = webfinger.get_resource('acct:test@test.webfinger')
+
+    assert data['actor_url'] == 'https://test.webfinger/user/test'
+    assert data['subject'] == resource
diff --git a/api/tests/music/test_permissions.py b/api/tests/music/test_permissions.py
index 6cce85e088c9efbba879e67ffa1cd111183c7d37..d36f37886d9930883643126642ab278eee8acf93 100644
--- a/api/tests/music/test_permissions.py
+++ b/api/tests/music/test_permissions.py
@@ -47,10 +47,25 @@ def test_list_permission_protect_following_actor(
         factories, api_request, settings):
     settings.PROTECT_AUDIO_FILES = True
     library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
-    follow = factories['federation.Follow'](target=library_actor)
+    follow = factories['federation.Follow'](
+        approved=True, target=library_actor)
     view = APIView.as_view()
     permission = permissions.Listen()
     request = api_request.get('/')
     setattr(request, 'actor', follow.actor)
 
     assert permission.has_permission(request, view) is True
+
+
+def test_list_permission_protect_following_actor_not_approved(
+        factories, api_request, settings):
+    settings.PROTECT_AUDIO_FILES = True
+    library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
+    follow = factories['federation.Follow'](
+        approved=False, target=library_actor)
+    view = APIView.as_view()
+    permission = permissions.Listen()
+    request = api_request.get('/')
+    setattr(request, 'actor', follow.actor)
+
+    assert permission.has_permission(request, view) is False
diff --git a/api/tests/music/test_views.py b/api/tests/music/test_views.py
index 468ea77e38f47848c1cf7090307d8cff8f5ffd86..81f34fbe9d95d41e198ef783746df65dcdbb0561 100644
--- a/api/tests/music/test_views.py
+++ b/api/tests/music/test_views.py
@@ -1,6 +1,8 @@
 import io
 import pytest
 
+from django.urls import reverse
+
 from funkwhale_api.music import views
 from funkwhale_api.federation import actors
 
@@ -52,7 +54,9 @@ def test_can_serve_track_file_as_remote_library(
     settings.PROTECT_AUDIO_FILES = True
     library_actor = actors.SYSTEM_ACTORS['library'].get_actor_instance()
     follow = factories['federation.Follow'](
-        actor=authenticated_actor, target=library_actor)
+        approved=True,
+        actor=authenticated_actor,
+        target=library_actor)
 
     track_file = factories['music.TrackFile']()
     response = api_client.get(track_file.path)
@@ -77,9 +81,31 @@ def test_can_proxy_remote_track(
     settings.PROTECT_AUDIO_FILES = False
     track_file = factories['music.TrackFile'](federation=True)
 
-    r_mock.get(track_file.library_track.audio_url, body=io.StringIO('test'))
+    r_mock.get(track_file.library_track.audio_url, body=io.BytesIO(b'test'))
     response = api_client.get(track_file.path)
 
+    library_track = track_file.library_track
+    library_track.refresh_from_db()
     assert response.status_code == 200
-    assert list(response.streaming_content) == [b't', b'e', b's', b't']
-    assert response['Content-Type'] == track_file.library_track.audio_mimetype
+    assert response['X-Accel-Redirect'] == "{}{}".format(
+        settings.PROTECT_FILES_PATH,
+        library_track.audio_file.url)
+    assert library_track.audio_file.read() == b'test'
+
+
+def test_can_create_import_from_federation_tracks(
+        factories, superuser_api_client, mocker):
+    lts = factories['federation.LibraryTrack'].create_batch(size=5)
+    mocker.patch('funkwhale_api.music.tasks.import_job_run')
+
+    payload = {
+        'library_tracks': [l.pk for l in lts]
+    }
+    url = reverse('api:v1:submit-federation')
+    response = superuser_api_client.post(url, payload)
+
+    assert response.status_code == 201
+    batch = superuser_api_client.user.imports.latest('id')
+    assert batch.jobs.count() == 5
+    for i, job in enumerate(batch.jobs.all()):
+        assert job.library_track == lts[i]
diff --git a/changes/changelog.d/136.feature b/changes/changelog.d/136.feature
new file mode 100644
index 0000000000000000000000000000000000000000..d869df31b15141830e7e09f2b28fceb1902f77f6
--- /dev/null
+++ b/changes/changelog.d/136.feature
@@ -0,0 +1 @@
+Can now follow and import music from remote libraries (#136, #137)
diff --git a/dev.yml b/dev.yml
index 409b6b4a7f7c22bd0313c1719062804bddaac279..9488d4a6f31b62a9b31bbdb7e519192dcb3c1884 100644
--- a/dev.yml
+++ b/dev.yml
@@ -10,22 +10,39 @@ services:
       - "HOST=0.0.0.0"
       - "WEBPACK_DEVSERVER_PORT=${WEBPACK_DEVSERVER_PORT-8080}"
     ports:
-      - "${WEBPACK_DEVSERVER_PORT-8080}:${WEBPACK_DEVSERVER_PORT-8080}"
+      - "${WEBPACK_DEVSERVER_PORT_BINDING-8080:}${WEBPACK_DEVSERVER_PORT-8080}"
     volumes:
       - './front:/app'
       - './po:/po'
+    networks:
+      - federation
+      - internal
+    labels:
+      traefik.backend: "${COMPOSE_PROJECT_NAME-node1}"
+      traefik.frontend.rule: "Host: ${COMPOSE_PROJECT_NAME-node1}.funkwhale.test"
+      traefik.enable: 'true'
+      traefik.federation.protocol: 'http'
+      traefik.federation.port: "${WEBPACK_DEVSERVER_PORT-8080}"
 
   postgres:
     env_file:
       - .env.dev
       - .env
     image: postgres
+    volumes:
+      - "./data/${COMPOSE_PROJECT_NAME-node1}/postgres:/var/lib/postgresql/data"
+    networks:
+      - internal
 
   redis:
     env_file:
       - .env.dev
       - .env
     image: redis:3.0
+    volumes:
+      - "./data/${COMPOSE_PROJECT_NAME-node1}/redis:/data"
+    networks:
+      - internal
 
   celeryworker:
     env_file:
@@ -39,11 +56,17 @@ services:
      - redis
     command: celery -A funkwhale_api.taskapp worker -l debug
     environment:
+      - "FUNKWHALE_HOSTNAME=${FUNKWHALE_HOSTNAME-localhost}"
+      - "FUNKWHALE_HOSTNAME_SUFFIX=funkwhale.test"
+      - "FUNKWHALE_HOSTNAME_PREFIX=${COMPOSE_PROJECT_NAME}"
+      - "FUNKWHALE_PROTOCOL=${FUNKWHALE_PROTOCOL-http}"
       - "DATABASE_URL=postgresql://postgres@postgres/postgres"
       - "CACHE_URL=redis://redis:6379/0"
     volumes:
       - ./api:/app
       - ./data/music:/music
+    networks:
+      - internal
   api:
     env_file:
       - .env.dev
@@ -56,12 +79,17 @@ services:
       - ./api:/app
       - ./data/music:/music
     environment:
+      - "FUNKWHALE_HOSTNAME=${FUNKWHALE_HOSTNAME-localhost}"
+      - "FUNKWHALE_HOSTNAME_SUFFIX=funkwhale.test"
+      - "FUNKWHALE_HOSTNAME_PREFIX=${COMPOSE_PROJECT_NAME}"
+      - "FUNKWHALE_PROTOCOL=${FUNKWHALE_PROTOCOL-http}"
       - "DATABASE_URL=postgresql://postgres@postgres/postgres"
       - "CACHE_URL=redis://redis:6379/0"
     links:
       - postgres
       - redis
-
+    networks:
+      - internal
   nginx:
     command: /entrypoint.sh
     env_file:
@@ -70,6 +98,8 @@ services:
     image: nginx
     environment:
       - "WEBPACK_DEVSERVER_PORT=${WEBPACK_DEVSERVER_PORT-8080}"
+      - "COMPOSE_PROJECT_NAME=${COMPOSE_PROJECT_NAME- }"
+      - "FUNKWHALE_HOSTNAME=${FUNKWHALE_HOSTNAME-localhost}"
     links:
       - api
       - front
@@ -79,8 +109,9 @@ services:
       - ./deploy/funkwhale_proxy.conf:/etc/nginx/funkwhale_proxy.conf.template:ro
       - ./api/funkwhale_api/media:/protected/media
     ports:
-      - "0.0.0.0:6001:6001"
-
+      - "6001"
+    networks:
+      - internal
   docs:
     build: docs
     command: python serve.py
@@ -89,3 +120,9 @@ services:
     ports:
       - '35730:35730'
       - '8001:8001'
+
+networks:
+  internal:
+  federation:
+    external:
+      name: federation
diff --git a/docker/nginx/entrypoint.sh b/docker/nginx/entrypoint.sh
index 1819acf1cf579cb3e0d70b754d06f2b6fc4959c6..14e072a7e986c6b2b1cb7605efee77cda8985215 100755
--- a/docker/nginx/entrypoint.sh
+++ b/docker/nginx/entrypoint.sh
@@ -1,10 +1,17 @@
 #!/bin/bash -eux
-FIRST_HOST=$(echo ${DJANGO_ALLOWED_HOSTS} | cut -d, -f1)
+
+FORWARDED_PORT="$WEBPACK_DEVSERVER_PORT"
+COMPOSE_PROJECT_NAME="${COMPOSE_PROJECT_NAME// /}"
+if [ -n "$COMPOSE_PROJECT_NAME" ]; then
+  echo
+    FUNKWHALE_HOSTNAME="$COMPOSE_PROJECT_NAME.funkwhale.test"
+    FORWARDED_PORT="443"
+fi
 echo "Copying template file..."
 cp /etc/nginx/funkwhale_proxy.conf{.template,}
-sed -i "s/X-Forwarded-Host \$host:\$server_port/X-Forwarded-Host ${FIRST_HOST}:${WEBPACK_DEVSERVER_PORT}/" /etc/nginx/funkwhale_proxy.conf
-sed -i "s/proxy_set_header Host \$host/proxy_set_header Host ${FIRST_HOST}/" /etc/nginx/funkwhale_proxy.conf
-sed -i "s/proxy_set_header X-Forwarded-Port \$server_port/proxy_set_header X-Forwarded-Port ${WEBPACK_DEVSERVER_PORT}/" /etc/nginx/funkwhale_proxy.conf
+sed -i "s/X-Forwarded-Host \$host:\$server_port/X-Forwarded-Host ${FUNKWHALE_HOSTNAME}:${FORWARDED_PORT}/" /etc/nginx/funkwhale_proxy.conf
+sed -i "s/proxy_set_header Host \$host/proxy_set_header Host ${FUNKWHALE_HOSTNAME}/" /etc/nginx/funkwhale_proxy.conf
+sed -i "s/proxy_set_header X-Forwarded-Port \$server_port/proxy_set_header X-Forwarded-Port ${FORWARDED_PORT}/" /etc/nginx/funkwhale_proxy.conf
 
 cat /etc/nginx/funkwhale_proxy.conf
 nginx -g "daemon off;"
diff --git a/docker/ssl/test.crt b/docker/ssl/test.crt
new file mode 100644
index 0000000000000000000000000000000000000000..e4d3eefb8442e78d3ce5dab60ea9393bea3b6258
--- /dev/null
+++ b/docker/ssl/test.crt
@@ -0,0 +1,22 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/docker/ssl/test.key b/docker/ssl/test.key
new file mode 100644
index 0000000000000000000000000000000000000000..669e5f7004be843fd49e72a65166efac9cbcc526
--- /dev/null
+++ b/docker/ssl/test.key
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/docker/traefik.toml b/docker/traefik.toml
new file mode 100644
index 0000000000000000000000000000000000000000..85da2ea7288a9609506d925178f79fc9a6fa4be1
--- /dev/null
+++ b/docker/traefik.toml
@@ -0,0 +1,26 @@
+defaultEntryPoints = ["http", "https"]
+
+################################################################
+# Web configuration backend
+################################################################
+[web]
+address = ":8040"
+################################################################
+# Docker configuration backend
+################################################################
+[docker]
+domain = "funkwhale.test"
+watch = true
+exposedbydefault = false
+
+[entryPoints]
+  [entryPoints.http]
+  address = ":80"
+    [entryPoints.http.redirect]
+    entryPoint = "https"
+  [entryPoints.https]
+  address = ":443"
+    [entryPoints.https.tls]
+      [[entryPoints.https.tls.certificates]]
+      certFile = "/ssl/traefik.crt"
+      keyFile = "/ssl/traefik.key"
diff --git a/docker/traefik.yml b/docker/traefik.yml
new file mode 100644
index 0000000000000000000000000000000000000000..0b15b32904fec3aea7276c31c1a660ca51f37f64
--- /dev/null
+++ b/docker/traefik.yml
@@ -0,0 +1,22 @@
+version: '2.1'
+
+services:
+  traefik:
+    image: traefik:alpine
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+      - ./traefik.toml:/traefik.toml
+      - ./ssl/test.key:/ssl/traefik.key
+      - ./ssl/test.crt:/ssl/traefik.crt
+    ports:
+      - '80:80'
+      - '443:443'
+      - '8040:8040'
+    networks:
+      federation:
+
+
+networks:
+  federation:
+    external:
+      name: federation
diff --git a/docs/features.rst b/docs/features.rst
index d72a826b68992faad0666df89f6362afb4997ab8..e0f490e4b741676085e2bc6cbeae01c8e5d19f85 100644
--- a/docs/features.rst
+++ b/docs/features.rst
@@ -42,3 +42,14 @@ The project itself is splitted in two parts:
 While the main interface to the server and API is the bundled front-end, the project itself is agnostic in the way you connect to it. Therefore, desktop clients or apps could be developped and implement the same (or even more) features as the bundled frontend.
 
 This modularity also makes it possible do deploy only a single component from the system.
+
+Federation
+----------
+
+Each Funkwhale instance is able to fetch music from other compatible servers,
+and share its own library on the network. The federation is implemented
+using the ActivityPub protocol, in order to leverage existing tools
+and be compatible with other services such as Mastodon.
+
+As of today, federation only targets music acquisition, meaning user interaction
+are not shared via ActivityPub. This will be implemented at a later point.
diff --git a/docs/federation.rst b/docs/federation.rst
new file mode 100644
index 0000000000000000000000000000000000000000..42edb0162231f5eac419f8ef12d31948d8950c57
--- /dev/null
+++ b/docs/federation.rst
@@ -0,0 +1,40 @@
+Federation
+==========
+
+Each Funkwale instance can federates its music library with other instances
+of the network. This means that an instance A can acquire music from instance B
+and share its own library with an instance C.
+
+We support various levels of controls for federation-related features.
+
+Acquire music via federation
+----------------------------
+
+Instance libraries are protected by default. To access another instance
+library, you have to follow it. This follow request will be sent to
+the other instance which can accept or deny it. Once your follow request
+is accepted, you can start browsing the other instance library
+and import music from it.
+
+By default, we do not duplicate audio files from federated tracks, to reduce
+disk usage on your instance. When someone listens to a federated track,
+the audio file is requested on the fly from the remote instance, and
+store in a local cache. It is automatically deleted after a configurable
+amount of time if it was not listened again in the meantime.
+
+If you want to mirror a remote instance collection, including its audio files,
+we offer an option for that.
+
+We also support an "autoimport" mode for each remote library. When enabled,
+any new track published in the remote library will be directly imported
+in your instance.
+
+Share music via federation
+--------------------------
+
+Federation is enabled by default, but requires manually approving
+each other instance asking for access to library. This is by design,
+to ensure your library is not shared publicly without your consent.
+
+However, we offer a configuration option to alter this behaviour and
+disable the manual approval part.
diff --git a/docs/importing-music.rst b/docs/importing-music.rst
index 92ff6bfb503208319ecef08347fdf72cf8d7709f..f09eea7b184d86bd465f5ba40c4c49343066da31 100644
--- a/docs/importing-music.rst
+++ b/docs/importing-music.rst
@@ -67,3 +67,9 @@ under creative commons (courtesy of Jamendo):
     ./download-tracks.sh music.txt
 
 This will download a bunch of zip archives (one per album) under the ``data/music`` directory and unzip their content.
+
+From other instances
+--------------------
+
+Funkwhale also supports importing music from other instances. Please refer
+to :doc:`federation` for more details.
diff --git a/docs/index.rst b/docs/index.rst
index f5acecce516ee8d6b635c91e3aa0fed2686f5739..82dcf8c88d475ddf53cea25133ca80c4c4feae2d 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -15,6 +15,7 @@ Funkwhale is a self-hosted, modern free and open-source music server, heavily in
    installation/index
    configuration
    importing-music
+   federation
    upgrading
    changelog
 
diff --git a/front/src/components/Home.vue b/front/src/components/Home.vue
index 0e24dcd59008c52fe198e6a1778d9d1e0c00545c..ce1307ff0c8a84b934f027c7a27509644edc32a5 100644
--- a/front/src/components/Home.vue
+++ b/front/src/components/Home.vue
@@ -3,7 +3,7 @@
     <div class="ui vertical center aligned stripe segment">
       <div class="ui text container">
         <h1 class="ui huge header">
-            Welcome on Funkwhale
+          Welcome on Funkwhale
         </h1>
         <p>We think listening music should be simple.</p>
         <router-link class="ui icon button" to="/about">
diff --git a/front/src/components/Pagination.vue b/front/src/components/Pagination.vue
index 47cf5183ab31aeb6fa4575139d42db73fc53a550..ca40cdd0762862e8371cdd2f6928dff25a0da0f8 100644
--- a/front/src/components/Pagination.vue
+++ b/front/src/components/Pagination.vue
@@ -1,25 +1,25 @@
 <template>
-  <div class="ui pagination borderless menu">
-    <a
-      v-if="current - 1 >= 1"
+  <div class="ui pagination menu">
+    <div
+      :disabled="current - 1 < 1"
       @click="selectPage(current - 1)"
-      :class="[{'disabled': current - 1 < 1}, 'item']"><i class="angle left icon"></i></a>
-    <template>
-      <a
+      :class="[{'disabled': current - 1 < 1}, 'item']"><i class="angle left icon"></i></div>
+    <template v-if="!compact">
+      <div
         v-if="page !== 'skip'"
         v-for="page in pages"
         @click="selectPage(page)"
         :class="[{'active': page === current}, 'item']">
         {{ page }}
-      </a>
-      <a v-else class="disabled item">
+      </div>
+      <div v-else class="disabled item">
         ...
-      </a>
+      </div>
     </template>
-    <a
-      v-if="current + 1 <= maxPage"
+    <div
+      :disabled="current + 1 > maxPage"
       @click="selectPage(current + 1)"
-      :class="[{'disabled': current + 1 > maxPage}, 'item']"><i class="angle right icon"></i></a>
+      :class="[{'disabled': current + 1 > maxPage}, 'item']"><i class="angle right icon"></i></div>
   </div>
 </template>
 
@@ -30,7 +30,8 @@ export default {
   props: {
     current: {type: Number, default: 1},
     paginateBy: {type: Number, default: 25},
-    total: {type: Number}
+    total: {type: Number},
+    compact: {type: Boolean, default: false}
   },
   computed: {
     pages: function () {
@@ -72,6 +73,9 @@ export default {
   },
   methods: {
     selectPage: function (page) {
+      if (page > this.maxPage || page < 1) {
+        return
+      }
       if (this.current !== page) {
         this.$emit('page-changed', page)
       }
diff --git a/front/src/components/Sidebar.vue b/front/src/components/Sidebar.vue
index 42a923b6b3faaf5586a35613277bbcdd7ea8c27d..96047ab9848621c55fe5b75971bfca47e6c9ba62 100644
--- a/front/src/components/Sidebar.vue
+++ b/front/src/components/Sidebar.vue
@@ -45,6 +45,9 @@
         <router-link
           v-if="$store.state.auth.authenticated"
           class="item" :to="{path: '/activity'}"><i class="bell icon"></i> Activity</router-link>
+        <router-link
+          class="item" v-if="$store.state.auth.availablePermissions['federation.manage']"
+          :to="{path: '/manage/federation/libraries'}"><i class="sitemap icon"></i> Federation</router-link>
       </div>
 
       <player></player>
diff --git a/front/src/components/common/DangerousButton.vue b/front/src/components/common/DangerousButton.vue
index 910209b9dc1c6f506ab759404e3393e484b5b456..690291d5b1d08abaa60f8576fce71b25a73f1047 100644
--- a/front/src/components/common/DangerousButton.vue
+++ b/front/src/components/common/DangerousButton.vue
@@ -26,7 +26,7 @@ import Modal from '@/components/semantic/Modal'
 
 export default {
   props: {
-    action: {type: Function, required: true},
+    action: {type: Function, required: false},
     disabled: {type: Boolean, default: false},
     color: {type: String, default: 'red'}
   },
@@ -41,7 +41,10 @@ export default {
   methods: {
     confirm () {
       this.showModal = false
-      this.action()
+      this.$emit('confirm')
+      if (this.action) {
+        this.action()
+      }
     }
   }
 }
diff --git a/front/src/components/federation/LibraryCard.vue b/front/src/components/federation/LibraryCard.vue
new file mode 100644
index 0000000000000000000000000000000000000000..a5579c125acb8cf5691cfc572b03a6ce03fd5204
--- /dev/null
+++ b/front/src/components/federation/LibraryCard.vue
@@ -0,0 +1,121 @@
+<template>
+  <div class="ui card">
+    <div class="content">
+      <div class="header">
+        {{ displayName }}
+      </div>
+    </div>
+    <div class="content">
+      <span class="right floated" v-if="following">
+        <i class="check icon"></i> Following
+      </span>
+      <span class="right floated" v-else-if="manuallyApprovesFollowers">
+        <i class="lock icon"></i> Followers only
+      </span>
+      <span class="right floated" v-else>
+        <i class="open lock icon"></i> Open
+      </span>
+      <span v-if="totalItems">
+        <i class="music icon"></i>
+        {{ totalItems }} tracks
+      </span>
+    </div>
+    <div class="extra content">
+      <template v-if="awaitingApproval">
+        <i class="clock icon"></i>
+        Follow request pending approval
+      </template>
+      <div
+        v-if="!library"
+        @click="follow"
+        :disabled="isLoading"
+        :class="['ui', 'basic', {loading: isLoading}, 'green', 'button']">
+        <template v-if="manuallyApprovesFollowers">
+          Send a follow request
+        </template>
+        <template v-else>
+          Follow
+        </template>
+      </div>
+      <router-link
+        v-else
+        class="ui basic button"
+        :to="{name: 'federation.libraries.detail', params: {id: library.uuid }}">
+        Detail
+      </router-link>
+    </div>
+  </div>
+</template>
+
+<script>
+import axios from 'axios'
+
+export default {
+  props: ['libraryData', 'libraryInstance'],
+  data () {
+    return {
+      library: this.libraryInstance,
+      isLoading: false,
+      data: null,
+      errors: []
+    }
+  },
+  methods: {
+    follow () {
+      let params = {
+        'actor': this.libraryData['actor']['id'],
+        'autoimport': false,
+        'download_files': false,
+        'federation_enabled': true
+      }
+      let self = this
+      self.isLoading = true
+      axios.post('/federation/libraries/', params).then((response) => {
+        self.$emit('follow', {data: self.libraryData, library: response.data})
+        self.library = response.data
+        self.isLoading = false
+      }, error => {
+        self.isLoading = false
+        self.errors = error.backendErrors
+      })
+    }
+  },
+  computed: {
+    displayName () {
+      if (this.libraryData) {
+        return this.libraryData.display_name
+      } else {
+        return `${this.library.actor.preferred_username}@${this.library.actor.domain}`
+      }
+    },
+    manuallyApprovesFollowers () {
+      if (this.libraryData) {
+        return this.libraryData.actor.manuallyApprovesFollowers
+      } else {
+        return this.library.actor.manually_approves_followers
+      }
+    },
+    totalItems () {
+      if (this.libraryData) {
+        return this.libraryData.library.totalItems
+      } else {
+        return this.library.tracks_count
+      }
+    },
+    awaitingApproval () {
+      if (this.libraryData) {
+        return this.libraryData.local.awaiting_approval
+      } else {
+        return this.library.follow.approved === null
+      }
+    },
+    following () {
+      if (this.libraryData) {
+        return this.libraryData.local.following
+      } else {
+        return this.library.follow.approved
+      }
+    }
+  }
+}
+</script>
diff --git a/front/src/components/federation/LibraryFollowTable.vue b/front/src/components/federation/LibraryFollowTable.vue
new file mode 100644
index 0000000000000000000000000000000000000000..9a35e0db636b92be2a953253d09c2418de731702
--- /dev/null
+++ b/front/src/components/federation/LibraryFollowTable.vue
@@ -0,0 +1,161 @@
+<template>
+  <div>
+    <div class="ui form">
+      <div class="fields">
+        <div class="ui six wide field">
+          <input type="text" v-model="search" placeholder="Search by username, domain..." />
+        </div>
+        <div class="ui four wide inline field">
+          <div class="ui checkbox">
+            <input v-model="pending" type="checkbox">
+            <label>Pending approval</label>
+          </div>
+        </div>
+      </div>
+    </div>
+    <div class="ui hidden divider"></div>
+    <table v-if="result" class="ui very basic single line unstackable table">
+      <thead>
+        <tr>
+          <th>Actor</th>
+          <th>Creation date</th>
+          <th>Status</th>
+          <th>Actions</th>
+        </tr>
+      </thead>
+      <tbody>
+        <tr v-for="follow in result.results">
+          <td>
+            {{ follow.actor.preferred_username }}@{{ follow.actor.domain }}
+          </td>
+          <td>
+            <human-date :date="follow.creation_date"></human-date>
+          </td>
+          <td>
+            <template v-if="follow.approved === true">
+              <i class="check icon"></i> Approved
+            </template>
+            <template v-else-if="follow.approved === false">
+              <i class="x icon"></i> Refused
+            </template>
+            <template v-else>
+              <i class="clock icon"></i> Pending
+            </template>
+          </td>
+          <td>
+            <dangerous-button v-if="follow.approved !== false" class="tiny basic labeled icon" color='red' @confirm="updateFollow(follow, false)">
+              <i class="x icon"></i> Deny
+              <p slot="modal-header">Deny access?</p>
+              <p slot="modal-content">By confirming, {{ follow.actor.preferred_username }}@{{ follow.actor.domain }} will be denied access to your library.</p>
+              <p slot="modal-confirm">Deny</p>
+            </dangerous-button>
+            <dangerous-button v-if="follow.approved !== true" class="tiny basic labeled icon" color='green' @confirm="updateFollow(follow, true)">
+              <i class="x icon"></i> Approve
+              <p slot="modal-header">Approve access?</p>
+              <p slot="modal-content">By confirming, {{ follow.actor.preferred_username }}@{{ follow.actor.domain }} will be granted access to your library.</p>
+              <p slot="modal-confirm">Approve</p>
+            </dangerous-button>
+          </td>
+        </tr>
+      </tbody>
+      <tfoot class="full-width">
+        <tr>
+          <th>
+            <pagination
+            v-if="result && result.results.length > 0"
+            @page-changed="selectPage"
+            :compact="true"
+            :current="page"
+            :paginate-by="paginateBy"
+            :total="result.count"
+            ></pagination>
+          </th>
+          <th v-if="result && result.results.length > 0">
+            Showing results {{ ((page-1) * paginateBy) + 1 }}-{{ ((page-1) * paginateBy) + result.results.length }} on {{ result.count }}</th>
+          <th></th>
+          <th></th>
+        </tr>
+      </tfoot>
+    </table>
+  </div>
+</template>
+
+<script>
+import axios from 'axios'
+import _ from 'lodash'
+
+import Pagination from '@/components/Pagination'
+
+export default {
+  props: {
+    filters: {type: Object, required: false, default: () => {}}
+  },
+  components: {
+    Pagination
+  },
+  data () {
+    return {
+      isLoading: false,
+      result: null,
+      page: 1,
+      paginateBy: 25,
+      search: '',
+      pending: false
+    }
+  },
+  created () {
+    this.fetchData()
+  },
+  methods: {
+    fetchData () {
+      let params = _.merge({
+        'page': this.page,
+        'page_size': this.paginateBy,
+        'q': this.search
+      }, this.filters)
+      if (this.pending) {
+        params.pending = true
+      }
+      let self = this
+      self.isLoading = true
+      axios.get('/federation/libraries/followers/', {params: params}).then((response) => {
+        self.result = response.data
+        self.isLoading = false
+      }, error => {
+        self.isLoading = false
+        self.errors = error.backendErrors
+      })
+    },
+    selectPage: function (page) {
+      this.page = page
+    },
+    updateFollow (follow, approved) {
+      let payload = {
+        follow: follow.id,
+        approved: approved
+      }
+      let self = this
+      axios.patch('/federation/libraries/followers/', payload).then((response) => {
+        follow.approved = response.data.approved
+        self.isLoading = false
+      }, error => {
+        self.isLoading = false
+        self.errors = error.backendErrors
+      })
+    }
+  },
+  watch: {
+    search (newValue) {
+      if (newValue.length > 0) {
+        this.fetchData()
+      }
+    },
+    page () {
+      this.fetchData()
+    },
+    pending () {
+      this.fetchData()
+    }
+  }
+}
+</script>
diff --git a/front/src/components/federation/LibraryForm.vue b/front/src/components/federation/LibraryForm.vue
new file mode 100644
index 0000000000000000000000000000000000000000..3aec5213d96ff6a3558380db3706233c1187d8b0
--- /dev/null
+++ b/front/src/components/federation/LibraryForm.vue
@@ -0,0 +1,110 @@
+<template>
+  <form class="ui form" @submit.prevent="fetchInstanceInfo">
+    <h3 class="ui header">Federate with a new instance</h3>
+    <p>Use this form to scan an instance and setup federation.</p>
+    <div v-if="errors.length > 0 || scanErrors.length > 0" class="ui negative message">
+      <div class="header">Error while scanning library</div>
+      <ul class="list">
+        <li v-for="error in errors">{{ error }}</li>
+        <li v-for="error in scanErrors">{{ error }}</li>
+      </ul>
+    </div>
+    <div class="ui two fields">
+      <div class="ui field">
+        <label>Library name</label>
+        <input v-model="libraryUsername" type="text" placeholder="library@demo.funkwhale.audio" />
+      </div>
+      <div class="ui field">
+        <label>&nbsp;</label>
+        <button
+          type="submit"
+          :disabled="isLoading"
+          :class="['ui', 'icon', {loading: isLoading}, 'button']">
+          <i class="search icon"></i>
+          Launch scan
+        </button>
+      </div>
+    </div>
+  </form>
+</template>
+
+<script>
+import axios from 'axios'
+import TrackTable from '@/components/audio/track/Table'
+import RadioButton from '@/components/radios/Button'
+import Pagination from '@/components/Pagination'
+
+export default {
+  components: {
+    TrackTable,
+    RadioButton,
+    Pagination
+  },
+  data () {
+    return {
+      isLoading: false,
+      libraryUsername: '',
+      result: null,
+      errors: []
+    }
+  },
+  methods: {
+    follow () {
+      let params = {
+        'actor': this.result['actor']['id'],
+        'autoimport': false,
+        'download_files': false,
+        'federation_enabled': true
+      }
+      let self = this
+      self.isFollowing = false
+      axios.post('/federation/libraries/', params).then((response) => {
+        self.$emit('follow', {data: self.result, library: response.data})
+        self.result = response.data
+        self.isFollowing = false
+      }, error => {
+        self.isFollowing = false
+        self.errors = error.backendErrors
+      })
+    },
+    fetchInstanceInfo () {
+      let self = this
+      this.isLoading = true
+      self.errors = []
+      self.result = null
+      axios.get('/federation/libraries/fetch/', {params: {account: this.libraryUsername}}).then((response) => {
+        self.result = response.data
+        self.result.display_name = self.libraryUsername
+        self.isLoading = false
+      }, error => {
+        self.isLoading = false
+        self.errors = error.backendErrors
+      })
+    }
+  },
+  computed: {
+    scanErrors () {
+      let errors = []
+      if (!this.result) {
+        return errors
+      }
+      let keys = ['webfinger', 'actor', 'library']
+      keys.forEach(k => {
+        if (this.result[k]) {
+          if (this.result[k].errors) {
+            this.result[k].errors.forEach(e => {
+              errors.push(e)
+            })
+          }
+        }
+      })
+      return errors
+    }
+  },
+  watch: {
+    result (newValue, oldValue) {
+      this.$emit('scanned', newValue)
+    }
+  }
+}
+</script>
diff --git a/front/src/components/federation/LibraryTrackTable.vue b/front/src/components/federation/LibraryTrackTable.vue
new file mode 100644
index 0000000000000000000000000000000000000000..6404f39905814e88812c3012e6be0d8e58fd4a52
--- /dev/null
+++ b/front/src/components/federation/LibraryTrackTable.vue
@@ -0,0 +1,186 @@
+<template>
+  <div>
+    <div class="ui inline form">
+      <input type="text" v-model="search" placeholder="Search by title, artist, domain..." />
+    </div>
+    <table v-if="result" class="ui compact very basic single line unstackable table">
+      <thead>
+        <tr>
+          <th>
+            <div class="ui checkbox">
+              <input
+                type="checkbox"
+                @change="toggleCheckAll"
+                :checked="result.results.length === checked.length"><label>&nbsp;</label>
+            </div>
+          </th>
+          <th>Title</th>
+          <th>Artist</th>
+          <th>Album</th>
+          <th>Published date</th>
+          <th v-if="showLibrary">Library</th>
+        </tr>
+      </thead>
+      <tbody>
+        <tr v-for="track in result.results">
+          <td class="collapsing">
+            <div v-if="!track.local_track_file" class="ui checkbox">
+              <input
+                type="checkbox"
+                @change="toggleCheck(track.id)"
+                :checked="checked.indexOf(track.id) > -1"><label>&nbsp;</label>
+            </div>
+            <div v-else class="ui label">
+              In library
+            </div>
+          </td>
+          <td>
+            <span :title="track.title">{{ track.title|truncate(30) }}</span>
+          </td>
+          <td>
+            <span :title="track.artist_name">{{ track.artist_name|truncate(30) }}</span>
+          </td>
+          <td>
+            <span :title="track.album_title">{{ track.album_title|truncate(20) }}</span>
+          </td>
+          <td>
+            <human-date :date="track.published_date"></human-date>
+          </td>
+          <td v-if="showLibrary">
+            {{ track.library.actor.domain }}
+          </td>
+        </tr>
+      </tbody>
+      <tfoot class="full-width">
+        <tr>
+          <th>
+            <pagination
+            v-if="result && result.results.length > 0"
+            @page-changed="selectPage"
+            :compact="true"
+            :current="page"
+            :paginate-by="paginateBy"
+            :total="result.count"
+            ></pagination>
+
+          </th>
+          <th v-if="result && result.results.length > 0">
+            Showing results {{ ((page-1) * paginateBy) + 1 }}-{{ ((page-1) * paginateBy) + result.results.length }} on {{ result.count }}</th>
+          <th>
+            <button
+              @click="launchImport"
+              :disabled="checked.length === 0 || isImporting"
+              :class="['ui', 'green', {loading: isImporting}, 'button']">Import {{ checked.length }} tracks
+            </button>
+            <router-link
+              v-if="importBatch"
+              :to="{name: 'library.import.batches.detail', params: {id: importBatch.id }}">
+              Import #{{ importBatch.id }} launched
+            </router-link>
+          </th>
+          <th></th>
+          <th></th>
+          <th></th>
+          <th v-if="showLibrary"></th>
+        </tr>
+      </tfoot>
+    </table>
+  </div>
+</template>
+
+<script>
+import axios from 'axios'
+import _ from 'lodash'
+
+import Pagination from '@/components/Pagination'
+
+export default {
+  props: {
+    filters: {type: Object, required: false},
+    showLibrary: {type: Boolean, default: false}
+  },
+  components: {
+    Pagination
+  },
+  data () {
+    return {
+      isLoading: false,
+      result: null,
+      page: 1,
+      paginateBy: 25,
+      search: '',
+      checked: {},
+      isImporting: false,
+      importBatch: null
+    }
+  },
+  created () {
+    this.fetchData()
+  },
+  methods: {
+    fetchData () {
+      let params = _.merge({
+        'page': this.page,
+        'page_size': this.paginateBy,
+        'q': this.search
+      }, this.filters)
+      let self = this
+      self.isLoading = true
+      self.checked = []
+      axios.get('/federation/library-tracks/', {params: params}).then((response) => {
+        self.result = response.data
+        self.isLoading = false
+      }, error => {
+        self.isLoading = false
+        self.errors = error.backendErrors
+      })
+    },
+    launchImport () {
+      let self = this
+      self.isImporting = true
+      let payload = {
+        library_tracks: this.checked
+      }
+      axios.post('/submit/federation/', payload).then((response) => {
+        self.importBatch = response.data
+        self.isImporting = false
+        self.fetchData()
+      }, error => {
+        self.isImporting = false
+        self.errors = error.backendErrors
+      })
+    },
+    toggleCheckAll () {
+      if (this.checked.length === this.result.results.length) {
+        // we uncheck
+        this.checked = []
+      } else {
+        this.checked = this.result.results.filter(t => {
+          return t.local_track_file === null
+        }).map(t => { return t.id })
+      }
+    },
+    toggleCheck (id) {
+      if (this.checked.indexOf(id) > -1) {
+        // we uncheck
+        this.checked.splice(this.checked.indexOf(id), 1)
+      } else {
+        this.checked.push(id)
+      }
+    },
+    selectPage: function (page) {
+      this.page = page
+    }
+  },
+  watch: {
+    search (newValue) {
+      if (newValue.length > 0) {
+        this.fetchData()
+      }
+    },
+    page () {
+      this.fetchData()
+    }
+  }
+}
+</script>
diff --git a/front/src/router/index.js b/front/src/router/index.js
index d41764227bb1a1cbd3536791ae24275b7228d249..a2bf781956a3350d514d108f5a8812be2e5f6156 100644
--- a/front/src/router/index.js
+++ b/front/src/router/index.js
@@ -25,6 +25,12 @@ import RequestsList from '@/components/requests/RequestsList'
 import PlaylistDetail from '@/views/playlists/Detail'
 import PlaylistList from '@/views/playlists/List'
 import Favorites from '@/components/favorites/List'
+import FederationBase from '@/views/federation/Base'
+import FederationScan from '@/views/federation/Scan'
+import FederationLibraryDetail from '@/views/federation/LibraryDetail'
+import FederationLibraryList from '@/views/federation/LibraryList'
+import FederationTrackList from '@/views/federation/LibraryTrackList'
+import FederationFollowersList from '@/views/federation/LibraryFollowersList'
 
 Vue.use(Router)
 
@@ -83,6 +89,50 @@ export default new Router({
         defaultPaginateBy: route.query.paginateBy
       })
     },
+    {
+      path: '/manage/federation',
+      component: FederationBase,
+      children: [
+        {
+          path: 'scan',
+          name: 'federation.libraries.scan',
+          component: FederationScan },
+        {
+          path: 'libraries',
+          name: 'federation.libraries.list',
+          component: FederationLibraryList,
+          props: (route) => ({
+            defaultOrdering: route.query.ordering,
+            defaultQuery: route.query.query,
+            defaultPaginateBy: route.query.paginateBy,
+            defaultPage: route.query.page
+          })
+        },
+        {
+          path: 'tracks',
+          name: 'federation.tracks.list',
+          component: FederationTrackList,
+          props: (route) => ({
+            defaultOrdering: route.query.ordering,
+            defaultQuery: route.query.query,
+            defaultPaginateBy: route.query.paginateBy,
+            defaultPage: route.query.page
+          })
+        },
+        {
+          path: 'followers',
+          name: 'federation.followers.list',
+          component: FederationFollowersList,
+          props: (route) => ({
+            defaultOrdering: route.query.ordering,
+            defaultQuery: route.query.query,
+            defaultPaginateBy: route.query.paginateBy,
+            defaultPage: route.query.page
+          })
+        },
+        { path: 'libraries/:id', name: 'federation.libraries.detail', component: FederationLibraryDetail, props: true }
+      ]
+    },
     {
       path: '/library',
       component: Library,
diff --git a/front/src/views/federation/Base.vue b/front/src/views/federation/Base.vue
new file mode 100644
index 0000000000000000000000000000000000000000..7958bb36b65332b840111cba5ab37c5e2a7962b0
--- /dev/null
+++ b/front/src/views/federation/Base.vue
@@ -0,0 +1,55 @@
+<template>
+  <div class="main pusher"  v-title="'Federation'">
+    <div class="ui secondary pointing menu">
+      <router-link
+        class="ui item"
+        :to="{name: 'federation.libraries.list'}">Libraries</router-link>
+      <router-link
+        class="ui item"
+        :to="{name: 'federation.tracks.list'}">Tracks</router-link>
+        <div class="ui secondary right menu">
+          <router-link
+            class="ui item"
+            :to="{name: 'federation.followers.list'}">
+            Followers
+            <div class="ui teal label" title="Pending requests">{{ requestsCount }}</div>
+          </router-link>
+        </div>
+    </div>
+    <router-view :key="$route.fullPath"></router-view>
+  </div>
+</template>
+<script>
+import axios from 'axios'
+export default {
+  data () {
+    return {
+      requestsCount: 0
+    }
+  },
+  created () {
+    this.fetchRequestsCount()
+  },
+  methods: {
+    fetchRequestsCount () {
+      let self = this
+      axios.get('federation/libraries/followers/', {params: {pending: true}}).then(response => {
+        self.requestsCount = response.data.count
+      })
+    }
+  }
+}
+</script>
+<style lang="scss">
+@import '../../style/vendor/media';
+
+.main.pusher > .ui.secondary.menu {
+  @include media(">tablet") {
+    margin: 0 2.5rem;
+  }
+  .item {
+    padding-top: 1.5em;
+    padding-bottom: 1.5em;
+  }
+}
+</style>
diff --git a/front/src/views/federation/LibraryDetail.vue b/front/src/views/federation/LibraryDetail.vue
new file mode 100644
index 0000000000000000000000000000000000000000..c64ca2cf23353005655a1d874717d16d403c471d
--- /dev/null
+++ b/front/src/views/federation/LibraryDetail.vue
@@ -0,0 +1,188 @@
+<template>
+  <div>
+    <div v-if="isLoading" class="ui vertical segment" v-title="'Library'">
+      <div :class="['ui', 'centered', 'active', 'inline', 'loader']"></div>
+    </div>
+    <template v-if="object">
+      <div :class="['ui', 'head', 'vertical', 'center', 'aligned', 'stripe', 'segment']" v-title="libraryUsername">
+        <div class="segment-content">
+          <h2 class="ui center aligned icon header">
+            <i class="circular inverted cloud olive icon"></i>
+            <div class="content">
+              {{ libraryUsername }}
+            </div>
+          </h2>
+        </div>
+        <div class="ui hidden divider"></div>
+        <div class="ui one column centered grid">
+          <table class="ui collapsing very basic table">
+            <tbody>
+              <tr>
+                <td>Follow status</td>
+                <td>
+                  <template v-if="object.follow.approved === null">
+                    <i class="loading icon"></i> Pending approval
+                  </template>
+                  <template v-else-if="object.follow.approved === true">
+                    <i class="check icon"></i> Following
+                  </template>
+                  <template v-else-if="object.follow.approved === false">
+                    <i class="x icon"></i> Not following
+                  </template>
+                </td>
+                <td>
+                </td>
+              </tr>
+              <tr>
+                <td>Federation</td>
+                <td>
+                  <div class="ui toggle checkbox">
+                    <input
+                      @change="update('federation_enabled')"
+                      v-model="object.federation_enabled" type="checkbox">
+                    <label></label>
+                  </div>
+                </td>
+                <td>
+                </td>
+              </tr>
+              <!-- Disabled until properly implemented on the backend
+              <tr>
+                <td>Auto importing</td>
+                <td>
+                  <div class="ui toggle checkbox">
+                    <input
+                      @change="update('autoimport')"
+                      v-model="object.autoimport" type="checkbox">
+                    <label></label>
+                  </div>
+                </td>
+                <td></td>
+              </tr>
+              <tr>
+                <td>File mirroring</td>
+                <td>
+                  <div class="ui toggle checkbox">
+                    <input
+                      @change="update('download_files')"
+                      v-model="object.download_files" type="checkbox">
+                    <label></label>
+                  </div>
+                </td>
+                <td></td>
+              </tr>
+              -->
+              <tr>
+                <td>Library size</td>
+                <td>
+                  {{ object.tracks_count }} tracks
+                </td>
+                <td></td>
+              </tr>
+              <tr>
+                <td>Last fetched</td>
+                <td>
+                  <human-date v-if="object.fetched_date" :date="object.fetched_date"></human-date>
+                  <template v-else>Never</template>
+                  <button
+                    @click="scan"
+                    v-if="!scanTrigerred"
+                    :class="['ui', 'basic', {loading: isScanLoading}, 'button']">
+                    <i class="sync icon"></i> Trigger scan
+                  </button>
+                  <button v-else class="ui success button">
+                    <i class="check icon"></i> Scan triggered!
+                  </button>
+
+                </td>
+                <td></td>
+              </tr>
+            </tbody>
+          </table>
+        </div>
+        <div class="ui hidden divider"></div>
+        <button @click="fetchData" class="ui basic button">Refresh</button>
+      </div>
+      <div class="ui vertical stripe segment">
+        <h2>Tracks available in this library</h2>
+        <library-track-table v-if="!isLoading" :filters="{library: id}"></library-track-table>
+      </div>
+    </template>
+  </div>
+</template>
+
+<script>
+import axios from 'axios'
+import logger from '@/logging'
+
+import LibraryTrackTable from '@/components/federation/LibraryTrackTable'
+
+export default {
+  props: ['id'],
+  components: {
+    LibraryTrackTable
+  },
+  data () {
+    return {
+      isLoading: true,
+      isScanLoading: false,
+      object: null,
+      scanTrigerred: false
+    }
+  },
+  created () {
+    this.fetchData()
+  },
+  methods: {
+    fetchData () {
+      var self = this
+      this.isLoading = true
+      let url = 'federation/libraries/' + this.id + '/'
+      logger.default.debug('Fetching library "' + this.id + '"')
+      axios.get(url).then((response) => {
+        self.object = response.data
+        self.isLoading = false
+      })
+    },
+    scan (until) {
+      var self = this
+      this.isScanLoading = true
+      let data = {}
+      let url = 'federation/libraries/' + this.id + '/scan/'
+      logger.default.debug('Triggering scan for library "' + this.id + '"')
+      axios.post(url, data).then((response) => {
+        self.scanTrigerred = true
+        logger.default.debug('Scan triggered with id', response.data)
+        self.isScanLoading = false
+      })
+    },
+    update (attr) {
+      let newValue = this.object[attr]
+      let params = {}
+      let self = this
+      params[attr] = newValue
+      axios.patch('federation/libraries/' + this.id + '/', params).then((response) => {
+        logger.default.info(`${attr} was updated succcessfully to ${newValue}`)
+      }, (error) => {
+        logger.default.error(`Error while setting ${attr} to ${newValue}`, error)
+        self.object[attr] = !newValue
+      })
+    }
+  },
+  computed: {
+    libraryUsername () {
+      let actor = this.object.actor
+      return `${actor.preferred_username}@${actor.domain}`
+    }
+  },
+  watch: {
+    id () {
+      this.fetchData()
+    }
+  }
+}
+</script>
+
+<!-- Add "scoped" attribute to limit CSS to this component only -->
+<style scoped>
+</style>
diff --git a/front/src/views/federation/LibraryFollowersList.vue b/front/src/views/federation/LibraryFollowersList.vue
new file mode 100644
index 0000000000000000000000000000000000000000..8ca120e8b54e3178d16dfcd7cd6f4af9468ddf1d
--- /dev/null
+++ b/front/src/views/federation/LibraryFollowersList.vue
@@ -0,0 +1,27 @@
+<template>
+  <div v-title="'Followers'">
+    <div class="ui vertical stripe segment">
+      <h2 class="ui header">Browsing followers</h2>
+      <p>
+        Be careful when accepting follow requests, as it means the follower
+        will have access to your entire library.
+      </p>
+      <div class="ui hidden divider"></div>
+      <library-follow-table></library-follow-table>
+    </div>
+  </div>
+</template>
+
+<script>
+import LibraryFollowTable from '@/components/federation/LibraryFollowTable'
+
+export default {
+  components: {
+    LibraryFollowTable
+  }
+}
+</script>
+
+<!-- Add "scoped" attribute to limit CSS to this component only -->
+<style scoped>
+</style>
diff --git a/front/src/views/federation/LibraryList.vue b/front/src/views/federation/LibraryList.vue
new file mode 100644
index 0000000000000000000000000000000000000000..43800a72e4afd182b3b925997f842f11198bf416
--- /dev/null
+++ b/front/src/views/federation/LibraryList.vue
@@ -0,0 +1,172 @@
+<template>
+  <div v-title="'Libraries'">
+    <div class="ui vertical stripe segment">
+      <h2 class="ui header">Browsing libraries</h2>
+      <router-link
+        class="ui basic green button"
+        :to="{name: 'federation.libraries.scan'}">
+        <i class="plus icon"></i>
+        Add a new library
+      </router-link>
+      <div class="ui hidden divider"></div>
+      <div :class="['ui', {'loading': isLoading}, 'form']">
+        <div class="fields">
+          <div class="field">
+            <label>Search</label>
+            <input type="text" v-model="query" placeholder="Enter an library domain name..."/>
+          </div>
+          <div class="field">
+            <label>Ordering</label>
+            <select class="ui dropdown" v-model="ordering">
+              <option v-for="option in orderingOptions" :value="option[0]">
+                {{ option[1] }}
+              </option>
+            </select>
+          </div>
+          <div class="field">
+            <label>Ordering direction</label>
+            <select class="ui dropdown" v-model="orderingDirection">
+              <option value="">Ascending</option>
+              <option value="-">Descending</option>
+            </select>
+          </div>
+          <div class="field">
+            <label>Results per page</label>
+            <select class="ui dropdown" v-model="paginateBy">
+              <option :value="parseInt(12)">12</option>
+              <option :value="parseInt(25)">25</option>
+              <option :value="parseInt(50)">50</option>
+            </select>
+          </div>
+        </div>
+      </div>
+      <div class="ui hidden divider"></div>
+      <div
+        v-if="result"
+        v-masonry
+        transition-duration="0"
+        item-selector=".column"
+        percent-position="true"
+        stagger="0"
+        class="ui stackable three column doubling grid">
+        <div
+          v-masonry-tile
+          v-if="result.results.length > 0"
+          v-for="library in result.results"
+          :key="library.id"
+          class="column">
+          <library-card class="fluid" :library-instance="library"></library-card>
+        </div>
+      </div>
+      <div class="ui center aligned basic segment">
+        <pagination
+          v-if="result && result.results.length > 0"
+          @page-changed="selectPage"
+          :current="page"
+          :paginate-by="paginateBy"
+          :total="result.count"
+          ></pagination>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script>
+import axios from 'axios'
+import _ from 'lodash'
+import $ from 'jquery'
+
+import logger from '@/logging'
+
+import OrderingMixin from '@/components/mixins/Ordering'
+import PaginationMixin from '@/components/mixins/Pagination'
+import LibraryCard from '@/components/federation/LibraryCard'
+import Pagination from '@/components/Pagination'
+
+const FETCH_URL = 'federation/libraries/'
+
+export default {
+  mixins: [OrderingMixin, PaginationMixin],
+  props: {
+    defaultQuery: {type: String, required: false, default: ''}
+  },
+  components: {
+    LibraryCard,
+    Pagination
+  },
+  data () {
+    let defaultOrdering = this.getOrderingFromString(this.defaultOrdering || '-creation_date')
+    return {
+      isLoading: true,
+      result: null,
+      page: parseInt(this.defaultPage),
+      query: this.defaultQuery,
+      paginateBy: parseInt(this.defaultPaginateBy || 50),
+      orderingDirection: defaultOrdering.direction,
+      ordering: defaultOrdering.field,
+      orderingOptions: [
+        ['creation_date', 'Creation date'],
+        ['tracks_count', 'Available tracks']
+      ]
+    }
+  },
+  created () {
+    this.fetchData()
+  },
+  mounted () {
+    $('.ui.dropdown').dropdown()
+  },
+  methods: {
+    updateQueryString: _.debounce(function () {
+      this.$router.replace({
+        query: {
+          query: this.query,
+          page: this.page,
+          paginateBy: this.paginateBy,
+          ordering: this.getOrderingAsString()
+        }
+      })
+    }, 500),
+    fetchData: _.debounce(function () {
+      var self = this
+      this.isLoading = true
+      let url = FETCH_URL
+      let params = {
+        page: this.page,
+        q: this.query,
+        ordering: this.getOrderingAsString()
+      }
+      logger.default.debug('Fetching libraries')
+      axios.get(url, {params: params}).then((response) => {
+        self.result = response.data
+        self.isLoading = false
+      })
+    }, 500),
+    selectPage: function (page) {
+      this.page = page
+    }
+  },
+  watch: {
+    page () {
+      this.updateQueryString()
+      this.fetchData()
+    },
+    ordering () {
+      this.updateQueryString()
+      this.fetchData()
+    },
+    orderingDirection () {
+      this.updateQueryString()
+      this.fetchData()
+    },
+    query () {
+      this.updateQueryString()
+      this.fetchData()
+    }
+  }
+}
+</script>
+
+<!-- Add "scoped" attribute to limit CSS to this component only -->
+<style scoped>
+</style>
diff --git a/front/src/views/federation/LibraryTrackList.vue b/front/src/views/federation/LibraryTrackList.vue
new file mode 100644
index 0000000000000000000000000000000000000000..42526b6e422d2325c480024e035d9907a28e9fe0
--- /dev/null
+++ b/front/src/views/federation/LibraryTrackList.vue
@@ -0,0 +1,23 @@
+<template>
+  <div v-title="'Federated tracks'">
+    <div class="ui vertical stripe segment">
+      <h2 class="ui header">Browsing federated tracks</h2>
+      <div class="ui hidden divider"></div>
+      <library-track-table :show-library="true"></library-track-table>
+    </div>
+  </div>
+</template>
+
+<script>
+import LibraryTrackTable from '@/components/federation/LibraryTrackTable'
+
+export default {
+  components: {
+    LibraryTrackTable
+  }
+}
+</script>
+
+<!-- Add "scoped" attribute to limit CSS to this component only -->
+<style scoped>
+</style>
diff --git a/front/src/views/federation/Scan.vue b/front/src/views/federation/Scan.vue
new file mode 100644
index 0000000000000000000000000000000000000000..5caa2f5405b43a4194e9571edd22c2277a9adc36
--- /dev/null
+++ b/front/src/views/federation/Scan.vue
@@ -0,0 +1,39 @@
+<template>
+  <div>
+    <div class="ui vertical stripe segment">
+      <library-form @scanned="updateLibraryData"></library-form>
+      <library-card v-if="libraryData" :library-data="libraryData"></library-card>
+    </div>
+    <div class="ui vertical stripe segment">
+    </div>
+  </div>
+</template>
+
+<script>
+// import axios from 'axios'
+import TrackTable from '@/components/audio/track/Table'
+import RadioButton from '@/components/radios/Button'
+import Pagination from '@/components/Pagination'
+import LibraryForm from '@/components/federation/LibraryForm'
+import LibraryCard from '@/components/federation/LibraryCard'
+
+export default {
+  components: {
+    TrackTable,
+    RadioButton,
+    Pagination,
+    LibraryForm,
+    LibraryCard
+  },
+  data () {
+    return {
+      libraryData: null
+    }
+  },
+  methods: {
+    updateLibraryData (data) {
+      this.libraryData = data
+    }
+  }
+}
+</script>