diff --git a/lib/decentralised_book_index/sync/sync/author_alias_registry_sync.ex b/lib/decentralised_book_index/sync/sync/author_alias_registry_sync.ex
index 9db52e5..a509f20 100644
--- a/lib/decentralised_book_index/sync/sync/author_alias_registry_sync.ex
+++ b/lib/decentralised_book_index/sync/sync/author_alias_registry_sync.ex
@@ -12,7 +12,7 @@ defmodule DecentralisedBookIndex.Sync.AuthorAliasRegistrySync do
 
         alias_registry
         |> Ash.Changeset.for_update(:sync, attrs)
-        |> Ash.update!()
+        |> Ash.update!(authorize?: false)
 
         :ok
 
@@ -23,7 +23,7 @@ defmodule DecentralisedBookIndex.Sync.AuthorAliasRegistrySync do
 
         AuthorAliasRegistry
         |> Ash.Changeset.for_create(:sync_create, attrs)
-        |> Ash.create!()
+        |> Ash.create!(authorize?: false)
 
         :ok
     end
diff --git a/lib/decentralised_book_index/sync/sync/author_sync.ex b/lib/decentralised_book_index/sync/sync/author_sync.ex
index 4671572..867fbae 100644
--- a/lib/decentralised_book_index/sync/sync/author_sync.ex
+++ b/lib/decentralised_book_index/sync/sync/author_sync.ex
@@ -16,7 +16,7 @@ defmodule DecentralisedBookIndex.Sync.AuthorSync do
 
         author
         |> Ash.Changeset.for_update(:sync, attrs)
-        |> Ash.update!()
+        |> Ash.update!(authorize?: false)
 
         :ok
 
@@ -28,7 +28,7 @@ defmodule DecentralisedBookIndex.Sync.AuthorSync do
 
         Author
         |> Ash.Changeset.for_create(:sync_create, attrs)
-        |> Ash.create!()
+        |> Ash.create!(authorize?: false)
 
         :ok
     end
diff --git a/lib/decentralised_book_index/sync/sync/book_editions_registry_sync.ex b/lib/decentralised_book_index/sync/sync/book_editions_registry_sync.ex
index 633ac10..ab54a89 100644
--- a/lib/decentralised_book_index/sync/sync/book_editions_registry_sync.ex
+++ b/lib/decentralised_book_index/sync/sync/book_editions_registry_sync.ex
@@ -12,7 +12,7 @@ defmodule DecentralisedBookIndex.Sync.BookEditionsRegistrySync do
 
         editions_registry
         |> Ash.Changeset.for_update(:sync, attrs)
-        |> Ash.update!()
+        |> Ash.update!(authorize?: false)
 
         :ok
 
@@ -23,7 +23,7 @@ defmodule DecentralisedBookIndex.Sync.BookEditionsRegistrySync do
 
         BookEditionsRegistry
         |> Ash.Changeset.for_create(:sync_create, attrs)
-        |> Ash.create!()
+        |> Ash.create!(authorize?: false)
 
         :ok
     end
diff --git a/lib/decentralised_book_index/sync/sync/book_sync.ex b/lib/decentralised_book_index/sync/sync/book_sync.ex
index d7afd61..d840b3e 100644
--- a/lib/decentralised_book_index/sync/sync/book_sync.ex
+++ b/lib/decentralised_book_index/sync/sync/book_sync.ex
@@ -16,7 +16,7 @@ defmodule DecentralisedBookIndex.Sync.BookSync do
 
         book
         |> Ash.Changeset.for_update(:sync, attrs)
-        |> Ash.update!()
+        |> Ash.update!(authorize?: false)
 
         :ok
       {:error, %Ash.Error.Query.NotFound{}} ->
@@ -27,7 +27,7 @@ defmodule DecentralisedBookIndex.Sync.BookSync do
 
         Book
         |> Ash.Changeset.for_create(:sync_create, attrs)
-        |> Ash.create!()
+        |> Ash.create!(authorize?: false)
 
         :ok
     end
diff --git a/lib/decentralised_book_index/sync/sync/publisher_sync.ex b/lib/decentralised_book_index/sync/sync/publisher_sync.ex
index f06bf9e..f7979f5 100644
--- a/lib/decentralised_book_index/sync/sync/publisher_sync.ex
+++ b/lib/decentralised_book_index/sync/sync/publisher_sync.ex
@@ -12,7 +12,7 @@ defmodule DecentralisedBookIndex.Sync.PublisherSync do
 
         publisher
         |> Ash.Changeset.for_update(:sync, attrs)
-        |> Ash.update!()
+        |> Ash.update!(authorize?: false)
 
         :ok
       {:error, %Ash.Error.Query.NotFound{}} ->
@@ -22,7 +22,7 @@ defmodule DecentralisedBookIndex.Sync.PublisherSync do
 
         Publisher
         |> Ash.Changeset.for_create(:sync_create, attrs)
-        |> Ash.create!()
+        |> Ash.create!(authorize?: false)
 
         :ok
     end
diff --git a/lib/decentralised_book_index/sync/sync_tasks/sync_server_task.ex b/lib/decentralised_book_index/sync/sync_tasks/sync_server_task.ex
index 167ed11..cb7cef2 100644
--- a/lib/decentralised_book_index/sync/sync_tasks/sync_server_task.ex
+++ b/lib/decentralised_book_index/sync/sync_tasks/sync_server_task.ex
@@ -7,7 +7,7 @@ defmodule DecentralisedBookIndex.Sync.SyncServerTask do
   alias DecentralisedBookIndex.SyncTasks.SyncBooksTask
 
   def sync_all(last_sync_datetime \\ nil) do
-    {:ok, servers} = Metadata.list_dbi_server()
+    {:ok, servers} = Metadata.list_dbi_server(authorize?: false)
 
     params = params(last_sync_datetime)
 
diff --git a/test/decentralised_book_index/sync/api_clients/fetch_json_test.exs b/test/decentralised_book_index/sync/api_clients/fetch_json_test.exs
index 31abde4..7d9174c 100644
--- a/test/decentralised_book_index/sync/api_clients/fetch_json_test.exs
+++ b/test/decentralised_book_index/sync/api_clients/fetch_json_test.exs
@@ -7,9 +7,14 @@ defmodule DecentralisedBookIndex.Sync.ApiClients.FetchJsonTest do
   alias DecentralisedBookIndex.TestEndpoints
   @test_server_endpoint TestEndpoints.test_api_endpoint()
 
+  setup do
+    user = generate(user(role: :moderator))
+    %{user: user}
+  end
+
   describe "authors api" do
-    test "get an author" do
-      {:ok, author} = Metadata.create_author("Author", "An description")
+    test "get an author", %{user: user} do
+      {:ok, author} = Metadata.create_author("Author", "An description", nil, nil, actor: user)
 
       assert {:ok, data} = FetchJson.get("#{@test_server_endpoint}/api/v1/json/authors/#{author.id}")
       assert data["data"]["id"] == author.id
diff --git a/test/decentralised_book_index/sync/api_clients/fetch_jsons_test.exs b/test/decentralised_book_index/sync/api_clients/fetch_jsons_test.exs
index 038af9d..e3601c3 100644
--- a/test/decentralised_book_index/sync/api_clients/fetch_jsons_test.exs
+++ b/test/decentralised_book_index/sync/api_clients/fetch_jsons_test.exs
@@ -8,19 +8,24 @@ defmodule DecentralisedBookIndex.Sync.ApiClients.FetchJsonsTest do
 
   @test_server_endpoint TestEndpoints.test_api_endpoint()
 
+  setup do
+    user = generate(user(role: :moderator))
+    %{user: user}
+  end
+
   describe "authors api" do
-    test "get authors" do
+    test "get authors", %{user: user} do
       for number <- 1..11 do
-        Metadata.create_author!("Author#{number}", "An description#{number}")
+        Metadata.create_author!("Author#{number}", "An description#{number}", nil, nil, actor: user)
       end
 
       assert {:ok, records} = FetchJsons.get("#{@test_server_endpoint}/api/v1/json/authors")
       assert length(records) == 11
     end
 
-    test "get authors names from API" do
+    test "get authors names from API", %{user: user} do
       for number <- 1..11 do
-        Metadata.create_author!("Author#{number}", "An description#{number}")
+        Metadata.create_author!("Author#{number}", "An description#{number}", nil, nil, actor: user)
       end
 
       get_author_names = fn data ->
diff --git a/test/decentralised_book_index/sync/sync/author_alias_registry_sync_test.exs b/test/decentralised_book_index/sync/sync/author_alias_registry_sync_test.exs
index a479cb8..6c9dec0 100644
--- a/test/decentralised_book_index/sync/sync/author_alias_registry_sync_test.exs
+++ b/test/decentralised_book_index/sync/sync/author_alias_registry_sync_test.exs
@@ -7,6 +7,11 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.AuthorAliasRegistrySyncTe
   alias DecentralisedBookIndex.TestEndpoints
   @test_server_endpoint TestEndpoints.test_api_endpoint()
 
+  setup do
+    user = generate(user(role: :moderator))
+    %{user: user}
+  end
+
   describe "sync author alias registry transformations" do
     test "a new registry will be created" do
       server = generate(dbi_server(url: @test_server_endpoint))
@@ -20,10 +25,10 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.AuthorAliasRegistrySyncTe
       assert server.id == saved_alias.dbi_server_id
     end
 
-    test "the same registry" do
+    test "the same registry", %{user: user} do
       server = generate(dbi_server(url: @test_server_endpoint))
 
-      {:ok, same_alias} = Metadata.create_author_alias_registry()
+      {:ok, same_alias} = Metadata.create_author_alias_registry(actor: user)
 
       attrs = %{
         id: same_alias.id,
diff --git a/test/decentralised_book_index/sync/sync/author_sync_test.exs b/test/decentralised_book_index/sync/sync/author_sync_test.exs
index 9cd2984..9cd19b0 100644
--- a/test/decentralised_book_index/sync/sync/author_sync_test.exs
+++ b/test/decentralised_book_index/sync/sync/author_sync_test.exs
@@ -7,6 +7,11 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.AuthorSyncTest do
   alias DecentralisedBookIndex.TestEndpoints
   @test_server_endpoint TestEndpoints.test_api_endpoint()
 
+  setup do
+    user = generate(user(role: :moderator))
+    %{user: user}
+  end
+
   describe "sync author transformations" do
     test "a new author will be created" do
       server = generate(dbi_server(url: @test_server_endpoint))
@@ -67,10 +72,10 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.AuthorSyncTest do
       assert server.id == saved_author.dbi_server_id
     end
 
-    test "update an existing author" do
+    test "update an existing author", %{user: user} do
       server = generate(dbi_server(url: @test_server_endpoint))
 
-      {:ok, author} = Metadata.create_author("Author", "An description")
+      {:ok, author} = Metadata.create_author("Author", "An description", nil, nil, actor: user)
 
       author_attrs = %{
         id: author.id,
diff --git a/test/decentralised_book_index/sync/sync/book_editions_registry_sync_test.exs b/test/decentralised_book_index/sync/sync/book_editions_registry_sync_test.exs
index d9899db..545c652 100644
--- a/test/decentralised_book_index/sync/sync/book_editions_registry_sync_test.exs
+++ b/test/decentralised_book_index/sync/sync/book_editions_registry_sync_test.exs
@@ -7,6 +7,11 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookEditionsRegistrySyncT
   alias DecentralisedBookIndex.TestEndpoints
   @test_server_endpoint TestEndpoints.test_api_endpoint()
 
+  setup do
+    user = generate(user(role: :moderator))
+    %{user: user}
+  end
+
   describe "sync book edition registry transformations" do
     test "a new registry will be created" do
       server = generate(dbi_server(url: @test_server_endpoint))
@@ -20,10 +25,10 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookEditionsRegistrySyncT
       assert server.id == saved_alias.dbi_server_id
     end
 
-    test "the same registry" do
+    test "the same registry", %{user: user} do
       server = generate(dbi_server(url: @test_server_endpoint))
 
-      {:ok, same_alias} = Metadata.create_book_editions_registry()
+      {:ok, same_alias} = Metadata.create_book_editions_registry(actor: user)
 
       attrs = %{
         id: same_alias.id,
diff --git a/test/decentralised_book_index/sync/sync/publisher_sync_test.exs b/test/decentralised_book_index/sync/sync/publisher_sync_test.exs
index 29c82c0..6f70ce2 100644
--- a/test/decentralised_book_index/sync/sync/publisher_sync_test.exs
+++ b/test/decentralised_book_index/sync/sync/publisher_sync_test.exs
@@ -7,6 +7,11 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.PublisherSyncTest do
   alias DecentralisedBookIndex.TestEndpoints
   @test_server_endpoint TestEndpoints.test_api_endpoint()
 
+  setup do
+    user = generate(user(role: :moderator))
+    %{user: user}
+  end
+
   describe "sync publisher transformations" do
     test "a new publisher will be created" do
       server = generate(dbi_server(url: @test_server_endpoint))
@@ -33,10 +38,10 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.PublisherSyncTest do
       assert server.id == saved_publisher.dbi_server_id
     end
 
-    test "update an existing publisher" do
+    test "update an existing publisher", %{user: user} do
       server = generate(dbi_server(url: @test_server_endpoint))
 
-      {:ok, publisher} = Metadata.create_publisher("Publisher")
+      {:ok, publisher} = Metadata.create_publisher("Publisher", actor: user)
 
       publisher_attrs = %{
         id: publisher.id,
diff --git a/test/decentralised_book_index/sync/sync_tasks/sync_authors_task_test.exs b/test/decentralised_book_index/sync/sync_tasks/sync_authors_task_test.exs
index 20413a1..f5c9d7e 100644
--- a/test/decentralised_book_index/sync/sync_tasks/sync_authors_task_test.exs
+++ b/test/decentralised_book_index/sync/sync_tasks/sync_authors_task_test.exs
@@ -7,12 +7,17 @@ defmodule DecentralisedBookIndex.SyncTasks.SyncAuthorsTaskTest do
   alias DecentralisedBookIndex.TestEndpoints
   @test_server_endpoint TestEndpoints.test_api_endpoint()
 
+  setup do
+    user = generate(user(role: :moderator))
+    %{user: user}
+  end
+
   describe "sync authors tasks" do
-    test "sync authors" do
+    test "sync authors", %{user: user} do
       server = generate(dbi_server(url: @test_server_endpoint))
 
-      {:ok, author} = Metadata.create_author("Author", "An description")
-      {:ok, author} = Metadata.create_author("Author2", "An description")
+      {:ok, author} = Metadata.create_author("Author", "An description", nil, nil, actor: user)
+      {:ok, author} = Metadata.create_author("Author2", "An description", nil, nil, actor: user)
 
       assert server = SyncAuthorsTask.sync(server)
     end
diff --git a/test/decentralised_book_index/sync/sync_tasks/sync_publishers_task_test.exs b/test/decentralised_book_index/sync/sync_tasks/sync_publishers_task_test.exs
index 89f12a7..8f91916 100644
--- a/test/decentralised_book_index/sync/sync_tasks/sync_publishers_task_test.exs
+++ b/test/decentralised_book_index/sync/sync_tasks/sync_publishers_task_test.exs
@@ -7,12 +7,17 @@ defmodule DecentralisedBookIndex.SyncTasks.SyncPublishersTaskTest do
   alias DecentralisedBookIndex.TestEndpoints
   @test_server_endpoint TestEndpoints.test_api_endpoint()
 
+  setup do
+    user = generate(user(role: :moderator))
+    %{user: user}
+  end
+
   describe "sync publishers tasks" do
-    test "sync publisher" do
+    test "sync publisher", %{user: user} do
       server = generate(dbi_server(url: @test_server_endpoint))
 
-      {:ok, _publisher} = Metadata.create_publisher("Publisher")
-      {:ok, _publisher} = Metadata.create_publisher("Publisher2")
+      {:ok, _publisher} = Metadata.create_publisher("Publisher", actor: user)
+      {:ok, _publisher} = Metadata.create_publisher("Publisher2", actor: user)
 
       assert server = SyncPublishersTask.sync(server)
     end
diff --git a/test/decentralised_book_index/sync/sync_tasks/sync_server_task_test.exs b/test/decentralised_book_index/sync/sync_tasks/sync_server_task_test.exs
index 9fcaf45..8d84025 100644
--- a/test/decentralised_book_index/sync/sync_tasks/sync_server_task_test.exs
+++ b/test/decentralised_book_index/sync/sync_tasks/sync_server_task_test.exs
@@ -11,19 +11,24 @@ defmodule DecentralisedBookIndex.Sync.SyncServerTaskTest do
   alias DecentralisedBookIndex.TestEndpoints
   @test_server_endpoint TestEndpoints.test_api_endpoint()
 
+  setup do
+    user = generate(user(role: :moderator))
+    %{user: user}
+  end
+
   describe "sync all" do
-    test "servers" do
+    test "servers", %{user: user} do
       server = generate(dbi_server(url: @test_server_endpoint))
-      {:ok, author} = Metadata.create_author("Author", "An description")
+      {:ok, author} = Metadata.create_author("Author", "An description", nil, nil, actor: user)
 
       assert server = SyncServerTask.sync_all()
     end
   end
 
   describe "sync one" do
-    test "server" do
+    test "server", %{user: user} do
       server = generate(dbi_server(url: @test_server_endpoint))
-      {:ok, author} = Metadata.create_author("Author", "An description")
+      {:ok, author} = Metadata.create_author("Author", "An description", nil, nil, actor: user)
 
       assert server = SyncServerTask.sync_one(server)
     end