diff --git a/inc/api.php b/inc/api.php
index 08dac34..2469c8a 100644
--- a/inc/api.php
+++ b/inc/api.php
@@ -2,17 +2,28 @@
 namespace api;
 
 require_once plugin_dir_path( __FILE__ ) . '/actors.php';
+require_once plugin_dir_path( __FILE__ ) . '/outbox.php';
 
-function get_user_actor( $data ) {
-    $handle = $data["handle"];
+function get_user_actor( $request ) {
+    $handle = $request['handle'];
     $id = get_user_by( 'slug', $handle );
     return \actors\user_to_actor( $id );
 }
 
+function post_to_outbox( $request ) {
+    $handle = $request['handle'] ;
+    $activity = json_decode( $request->get_body() );
+    return \outbox\create_activity( $handle, $activity );
+}
+
 function register_routes() {
     register_rest_route( 'activitypub/v1', '/actor/(?P<handle>[a-zA-Z0-9-]+)', array(
         'methods' => 'GET',
         'callback' => __NAMESPACE__ . '\get_user_actor',
     ) );
+    register_rest_route( 'activitypub/v1', '/actor/(?P<handle>[a-zA-Z0-9-]+)/outbox', array(
+        'methods' => 'POST',
+        'callback' => __NAMESPACE__ . '\post_to_outbox',
+    ) );
 }
 ?>
diff --git a/inc/outbox.php b/inc/outbox.php
index a9e93c6..1154258 100644
--- a/inc/outbox.php
+++ b/inc/outbox.php
@@ -14,7 +14,7 @@ namespace outbox;
 
 function create_outbox_table() {
     global $wpdb;
-    $wpdb->Query(
+    $wpdb->query(
         "
         CREATE TABLE IF NOT EXISTS activitypub_outbox (
             id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
@@ -24,4 +24,18 @@ function create_outbox_table() {
         "
     );
 }
+
+function create_activity( $actor, $activity ) {
+    // TODO validate activity and actor; handle errors
+    global $wpdb;
+    $activity_json = wp_json_encode($activity);
+    $wpdb->insert( 'activitypub_outbox',
+                   array(
+                       "actor" => $actor,
+                       "activity" => $activity_json,
+                   ) );
+    return json_decode( $wpdb->get_var( sprintf(
+        "SELECT activity FROM activitypub_outbox WHERE id = %d", $wpdb->insert_id
+    ) ) );
+}
 ?>