diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 125473b96..e9f0dcd32 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -133,6 +133,13 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       query
     end
 
+    query = if opts["actor_id"] do
+      from activity in query,
+        where: fragment("? @> ?", activity.data, ^%{actor: opts["actor_id"]})
+    else
+      query
+    end
+
     Repo.all(query)
     |> Enum.reverse
   end
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index 0446f622b..b28813a45 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -25,6 +25,7 @@ defmodule Pleroma.Web.Router do
     get "/help/test", TwitterAPI.Controller, :help_test
     get "/statuses/public_timeline", TwitterAPI.Controller, :public_timeline
     get "/statuses/public_and_external_timeline", TwitterAPI.Controller, :public_timeline
+    get "/statuses/user_timeline", TwitterAPI.Controller, :user_timeline
     get "/statuses/show/:id", TwitterAPI.Controller, :fetch_status
     get "/statusnet/conversation/:id", TwitterAPI.Controller, :fetch_conversation
     get "/statusnet/config", TwitterAPI.Controller, :config
diff --git a/lib/pleroma/web/twitter_api/twitter_api.ex b/lib/pleroma/web/twitter_api/twitter_api.ex
index 7984b2e63..9b9ee0bd1 100644
--- a/lib/pleroma/web/twitter_api/twitter_api.ex
+++ b/lib/pleroma/web/twitter_api/twitter_api.ex
@@ -80,6 +80,11 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
     |> activities_to_statuses(%{for: user})
   end
 
+  def fetch_user_statuses(user, opts \\ %{}) do
+    ActivityPub.fetch_activities([], opts)
+    |> activities_to_statuses(%{for: user})
+  end
+
   def fetch_conversation(user, id) do
     query = from activity in Activity,
       where: fragment("? @> ?", activity.data, ^%{ statusnetConversationId: id}),
@@ -248,12 +253,37 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
       {:ok, UserRepresenter.to_map(user)}
     else
       {:error, changeset} ->
-        errors = Ecto.Changeset.traverse_errors(changeset, fn {msg, opts} -> msg end)
-        |> Poison.encode!
+        errors = Ecto.Changeset.traverse_errors(changeset, fn {msg, _opts} -> msg end)
+      |> Poison.encode!
         {:error, %{error: errors}}
     end
   end
 
+  def get_user(user, params) do
+    case params do
+      %{ "user_id" => user_id } ->
+        case target = Repo.get(User, user_id) do
+          nil ->
+            {:error, "No user with such user_id"}
+          _ ->
+            {:ok, target}
+        end
+      %{ "screen_name" => nickname } ->
+        case target = Repo.get_by(User, nickname: nickname) do
+          nil ->
+            {:error, "No user with such screen_name"}
+          _ ->
+            {:ok, target}
+        end
+      _ ->
+        if user do
+          {:ok, user}
+        else
+          {:error, "You need to specify screen_name or user_id"}
+        end
+    end
+  end
+
   defp activities_to_statuses(activities, opts) do
     Enum.map(activities, fn(activity) ->
       activity_to_status(activity, opts)
diff --git a/lib/pleroma/web/twitter_api/twitter_api_controller.ex b/lib/pleroma/web/twitter_api/twitter_api_controller.ex
index 32d352d79..8b5e6270b 100644
--- a/lib/pleroma/web/twitter_api/twitter_api_controller.ex
+++ b/lib/pleroma/web/twitter_api/twitter_api_controller.ex
@@ -45,6 +45,18 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     |> json_reply(200, json)
   end
 
+  def user_timeline(%{assigns: %{user: user}} = conn, params) do
+    case TwitterAPI.get_user(user, params) do
+      {:ok, target_user} ->
+        params = Map.merge(params, %{"actor_id" => target_user.ap_id})
+        statuses  = TwitterAPI.fetch_user_statuses(user, params)
+        conn
+        |> json_reply(200, statuses |> Poison.encode!)
+      {:error, msg} ->
+        bad_request_reply(conn, msg)
+    end
+  end
+
   def follow(%{assigns: %{user: user}} = conn, %{ "user_id" => followed_id }) do
     case TwitterAPI.follow(user, followed_id) do
       { :ok, user, followed, _activity } ->
@@ -162,6 +174,11 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     |> json_reply(200, response)
   end
 
+  defp bad_request_reply(conn, error_message) do
+    json = Poison.encode!(%{"error" => error_message})
+    json_reply(conn, 400, json)
+  end
+
   defp json_reply(conn, status, json) do
     conn
     |> put_resp_content_type("application/json")
diff --git a/test/web/twitter_api/twitter_api_controller_test.exs b/test/web/twitter_api/twitter_api_controller_test.exs
index d71dc392e..8bf3fe107 100644
--- a/test/web/twitter_api/twitter_api_controller_test.exs
+++ b/test/web/twitter_api/twitter_api_controller_test.exs
@@ -114,6 +114,72 @@ defmodule Pleroma.Web.TwitterAPI.ControllerTest do
     end
   end
 
+  describe "GET /statuses/user_timeline.json" do
+    setup [:valid_user]
+    test "without any params", %{conn: conn} do
+      conn = get(conn, "/api/statuses/user_timeline.json")
+      assert json_response(conn, 400) == %{"error" => "You need to specify screen_name or user_id"}
+    end
+
+    test "with user_id", %{conn: conn} do
+      user = insert(:user)
+      {:ok, activity} = ActivityBuilder.insert(%{"id" => 1}, %{user: user})
+
+      conn = get(conn, "/api/statuses/user_timeline.json", %{"user_id" => user.id})
+      response = json_response(conn, 200)
+      assert length(response) == 1
+      assert Enum.at(response, 0) == ActivityRepresenter.to_map(activity, %{user: user})
+    end
+
+    test "with screen_name", %{conn: conn} do
+      user = insert(:user)
+      {:ok, activity} = ActivityBuilder.insert(%{"id" => 1}, %{user: user})
+
+      conn = get(conn, "/api/statuses/user_timeline.json", %{"screen_name" => user.nickname})
+      response = json_response(conn, 200)
+      assert length(response) == 1
+      assert Enum.at(response, 0) == ActivityRepresenter.to_map(activity, %{user: user})
+    end
+
+    test "with credentials", %{conn: conn, user: current_user} do
+      {:ok, activity} = ActivityBuilder.insert(%{"id" => 1}, %{user: current_user})
+      conn = conn
+      |> with_credentials(current_user.nickname, "test")
+      |> get("/api/statuses/user_timeline.json")
+
+      response = json_response(conn, 200)
+
+      assert length(response) == 1
+      assert Enum.at(response, 0) == ActivityRepresenter.to_map(activity, %{user: current_user})
+    end
+
+    test "with credentials with user_id", %{conn: conn, user: current_user} do
+      user = insert(:user)
+      {:ok, activity} = ActivityBuilder.insert(%{"id" => 1}, %{user: user})
+      conn = conn
+      |> with_credentials(current_user.nickname, "test")
+      |> get("/api/statuses/user_timeline.json", %{"user_id" => user.id})
+
+      response = json_response(conn, 200)
+
+      assert length(response) == 1
+      assert Enum.at(response, 0) == ActivityRepresenter.to_map(activity, %{user: user})
+    end
+
+    test "with credentials screen_name", %{conn: conn, user: current_user} do
+      user = insert(:user)
+      {:ok, activity} = ActivityBuilder.insert(%{"id" => 1}, %{user: user})
+      conn = conn
+      |> with_credentials(current_user.nickname, "test")
+      |> get("/api/statuses/user_timeline.json", %{"screen_name" => user.nickname})
+
+      response = json_response(conn, 200)
+
+      assert length(response) == 1
+      assert Enum.at(response, 0) == ActivityRepresenter.to_map(activity, %{user: user})
+    end
+  end
+
   describe "POST /friendships/create.json" do
     setup [:valid_user]
     test "without valid credentials", %{conn: conn} do
diff --git a/test/web/twitter_api/twitter_api_test.exs b/test/web/twitter_api/twitter_api_test.exs
index 48a2c3ba0..196822f99 100644
--- a/test/web/twitter_api/twitter_api_test.exs
+++ b/test/web/twitter_api/twitter_api_test.exs
@@ -102,6 +102,38 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPITest do
     assert Enum.at(statuses, 1) == ActivityRepresenter.to_map(direct_activity, %{user: direct_activity_user, mentioned: [user]})
   end
 
+  test "get a user by params" do
+    user1_result = {:ok, user1} = UserBuilder.insert(%{ap_id: "some id", email: "test@pleroma"})
+    {:ok, user2} = UserBuilder.insert(%{ap_id: "some other id", nickname: "testname2", email: "test2@pleroma"})
+
+    assert {:error, "You need to specify screen_name or user_id"} == TwitterAPI.get_user(nil, nil)
+    assert user1_result == TwitterAPI.get_user(nil, %{"user_id" => user1.id})
+    assert user1_result == TwitterAPI.get_user(nil, %{"screen_name" => user1.nickname})
+    assert user1_result == TwitterAPI.get_user(user1, nil)
+    assert user1_result == TwitterAPI.get_user(user2, %{"user_id" => user1.id})
+    assert user1_result == TwitterAPI.get_user(user2, %{"screen_name" => user1.nickname})
+    assert {:error, "No user with such screen_name"} == TwitterAPI.get_user(nil, %{"screen_name" => "Satan"})
+    assert {:error, "No user with such user_id"} == TwitterAPI.get_user(nil, %{"user_id" => 666})
+  end
+
+  test "fetch user's statuses" do
+    {:ok, user1} = UserBuilder.insert(%{ap_id: "some id", email: "test@pleroma"})
+    {:ok, user2} = UserBuilder.insert(%{ap_id: "some other id", nickname: "testname2", email: "test2@pleroma"})
+
+    {:ok, status1} = ActivityBuilder.insert(%{"id" => 1}, %{user: user1})
+    {:ok, status2} = ActivityBuilder.insert(%{"id" => 2}, %{user: user2})
+
+    user1_statuses = TwitterAPI.fetch_user_statuses(user1, %{"actor_id" => user1.ap_id})
+
+    assert length(user1_statuses) == 1
+    assert Enum.at(user1_statuses, 0) == ActivityRepresenter.to_map(status1, %{user: user1})
+
+    user2_statuses = TwitterAPI.fetch_user_statuses(user1, %{"actor_id" => user2.ap_id})
+
+    assert length(user2_statuses) == 1
+    assert Enum.at(user2_statuses, 0) == ActivityRepresenter.to_map(status2, %{user: user2})
+  end
+
   test "fetch a single status" do
     {:ok, activity} = ActivityBuilder.insert()
     {:ok, user} = UserBuilder.insert()