$blog_id, $tag_id // /sites/%s/categories/slug:%s -> $blog_id, $tag_id function callback( $path = '', $blog_id = 0, $taxonomy_id = 0 ) { $blog_id = $this->api->switch_to_blog_and_validate_user( $this->api->get_blog_id( $blog_id ) ); if ( is_wp_error( $blog_id ) ) { return $blog_id; } $args = $this->query_args(); if ( preg_match( '#/tags/#i', $path ) ) { $taxonomy_type = "post_tag"; } else { $taxonomy_type = "category"; } $return = $this->get_taxonomy( $taxonomy_id, $taxonomy_type, $args['context'] ); if ( !$return || is_wp_error( $return ) ) { return $return; } /** This action is documented in json-endpoints/class.wpcom-json-api-site-settings-endpoint.php */ do_action( 'wpcom_json_api_objects', 'taxonomies' ); return $return; } }