Modify the account relationships.

add_filter( 'mastodon_api_account_relationships', function ( $relationships, $user_ids, $request ) {
   $relationships[0]->following = true;

   return $relationships;
}, 10, 3 );

• Enable_Mastodon_Apps\Entity\Relationship[] $relationships The account relationships.
• array $user_ids The user IDs.
• WP_REST_Request $request The request object.

Enable_Mastodon_Apps\Entity\Relationship[] The modified account relationships.

• includes/class-mastodon-api.php:3359

apply_filters( 'mastodon_api_account_relationships', $relationships, $user_ids, $request )

Hooks