diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75442b5f0..f57e191fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
### Added
- Rich media failure tracking (along with `:failure_backoff` option)
+- MRF policy to rewrite bot posts scope from public to unlisted
### Fixed
diff --git a/docs/configuration/cheatsheet.md b/docs/configuration/cheatsheet.md
index 7f0725b48..bffce95e7 100644
--- a/docs/configuration/cheatsheet.md
+++ b/docs/configuration/cheatsheet.md
@@ -115,6 +115,7 @@ To add configuration to your config file, you can copy it from the base config.
* `Pleroma.Web.ActivityPub.MRF.VocabularyPolicy`: Restricts activities to a configured set of vocabulary. (See [`:mrf_vocabulary`](#mrf_vocabulary)).
* `Pleroma.Web.ActivityPub.MRF.ObjectAgePolicy`: Rejects or delists posts based on their age when received. (See [`:mrf_object_age`](#mrf_object_age)).
* `Pleroma.Web.ActivityPub.MRF.ActivityExpirationPolicy`: Sets a default expiration on all posts made by users of the local instance. Requires `Pleroma.ActivityExpiration` to be enabled for processing the scheduled delections.
+ * `Pleroma.Web.ActivityPub.MRF.ForceBotUnlistedPolicy`: Makes all bot posts to disappear from public timelines.
* `transparency`: Make the content of your Message Rewrite Facility settings public (via nodeinfo).
* `transparency_exclusions`: Exclude specific instance names from MRF transparency. The use of the exclusions feature will be disclosed in nodeinfo as a boolean value.
diff --git a/lib/pleroma/web/activity_pub/mrf/force_bot_unlisted_policy.ex b/lib/pleroma/web/activity_pub/mrf/force_bot_unlisted_policy.ex
new file mode 100644
index 000000000..ea9c3d3f5
--- /dev/null
+++ b/lib/pleroma/web/activity_pub/mrf/force_bot_unlisted_policy.ex
@@ -0,0 +1,56 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.ForceBotUnlistedPolicy do
+ alias Pleroma.User
+ @behaviour Pleroma.Web.ActivityPub.MRF
+ @moduledoc "Remove bot posts from federated timeline"
+
+ require Pleroma.Constants
+
+ defp check_by_actor_type(user), do: user.actor_type in ["Application", "Service"]
+ defp check_by_nickname(user), do: Regex.match?(~r/bot@|ebooks@/i, user.nickname)
+
+ defp check_if_bot(user), do: check_by_actor_type(user) or check_by_nickname(user)
+
+ @impl true
+ def filter(
+ %{
+ "type" => "Create",
+ "to" => to,
+ "cc" => cc,
+ "actor" => actor,
+ "object" => object
+ } = message
+ ) do
+ user = User.get_cached_by_ap_id(actor)
+ isbot = check_if_bot(user)
+
+ if isbot and Enum.member?(to, Pleroma.Constants.as_public()) do
+ to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
+ cc = List.delete(cc, user.follower_address) ++ [Pleroma.Constants.as_public()]
+
+ object =
+ object
+ |> Map.put("to", to)
+ |> Map.put("cc", cc)
+
+ message =
+ message
+ |> Map.put("to", to)
+ |> Map.put("cc", cc)
+ |> Map.put("object", object)
+
+ {:ok, message}
+ else
+ {:ok, message}
+ end
+ end
+
+ @impl true
+ def filter(message), do: {:ok, message}
+
+ @impl true
+ def describe, do: {:ok, %{}}
+end
diff --git a/test/web/activity_pub/mrf/force_bot_unlisted_policy_test.exs b/test/web/activity_pub/mrf/force_bot_unlisted_policy_test.exs
new file mode 100644
index 000000000..86dd9ddae
--- /dev/null
+++ b/test/web/activity_pub/mrf/force_bot_unlisted_policy_test.exs
@@ -0,0 +1,60 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.ForceBotUnlistedPolicyTest do
+ use Pleroma.DataCase
+ import Pleroma.Factory
+
+ alias Pleroma.Web.ActivityPub.MRF.ForceBotUnlistedPolicy
+ @public "https://www.w3.org/ns/activitystreams#Public"
+
+ defp generate_messages(actor) do
+ {%{
+ "actor" => actor.ap_id,
+ "type" => "Create",
+ "object" => %{},
+ "to" => [@public, "f"],
+ "cc" => [actor.follower_address, "d"]
+ },
+ %{
+ "actor" => actor.ap_id,
+ "type" => "Create",
+ "object" => %{"to" => ["f", actor.follower_address], "cc" => ["d", @public]},
+ "to" => ["f", actor.follower_address],
+ "cc" => ["d", @public]
+ }}
+ end
+
+ test "removes from the federated timeline by nickname heuristics 1" do
+ actor = insert(:user, %{nickname: "annoying_ebooks@example.com"})
+
+ {message, except_message} = generate_messages(actor)
+
+ assert ForceBotUnlistedPolicy.filter(message) == {:ok, except_message}
+ end
+
+ test "removes from the federated timeline by nickname heuristics 2" do
+ actor = insert(:user, %{nickname: "cirnonewsnetworkbot@meow.cat"})
+
+ {message, except_message} = generate_messages(actor)
+
+ assert ForceBotUnlistedPolicy.filter(message) == {:ok, except_message}
+ end
+
+ test "removes from the federated timeline by actor type Application" do
+ actor = insert(:user, %{actor_type: "Application"})
+
+ {message, except_message} = generate_messages(actor)
+
+ assert ForceBotUnlistedPolicy.filter(message) == {:ok, except_message}
+ end
+
+ test "removes from the federated timeline by actor type Service" do
+ actor = insert(:user, %{actor_type: "Service"})
+
+ {message, except_message} = generate_messages(actor)
+
+ assert ForceBotUnlistedPolicy.filter(message) == {:ok, except_message}
+ end
+end