diff --git a/docs/reference/matrix-glib/matrix-glib-sections.txt b/docs/reference/matrix-glib/matrix-glib-sections.txt
index 492dfd9..d160d09 100644
--- a/docs/reference/matrix-glib/matrix-glib-sections.txt
+++ b/docs/reference/matrix-glib/matrix-glib-sections.txt
@@ -292,6 +292,9 @@ matrix_api_add_room_tag
 <SUBSECTION>
 matrix_api_get_turn_server
 
+<SUBSECTION>
+matrix_api_abort_pending
+
 <SUBSECTION Standard>
 MatrixAPI
 MATRIX_TYPE_API_ERROR
diff --git a/src/matrix-api.c b/src/matrix-api.c
index 377d7d2..9120ff9 100644
--- a/src/matrix-api.c
+++ b/src/matrix-api.c
@@ -100,6 +100,7 @@
  * @delete_room_tag: virtual function for matrix_api_delete_room_tag()
  * @add_room_tag: virtual function for matrix_api_add_room_tag()
  * @get_turn_server: virtual function for matrix_api_get_turn_server()
+ * @abort_pending: virtual function for matrix_api_abort_pending()
  *
  * The interface vtable for #MatrixAPI
  */
@@ -2681,3 +2682,25 @@ matrix_api_get_turn_server(MatrixAPI *api,
     MATRIX_API_GET_IFACE(api)
         ->get_turn_server(api, callback, user_data, error);
 }
+
+/* Non-spec methods */
+
+/**
+ * matrix_api_abort_pending:
+ * @api: a #MatrixAPI implementation
+ *
+ * Abort all pending requests toward the Matrix server. Be aware that
+ * this may leave requests in an incosistent state.
+ *
+ * Implementations that provide only synchronous requests can choose
+ * not to implement this function.
+ */
+void
+matrix_api_abort_pending(MatrixAPI *api)
+{
+    g_return_if_fail(MATRIX_IS_API(api));
+
+    if (MATRIX_API_GET_IFACE(api)->abort_pending) {
+        MATRIX_API_GET_IFACE(api)->abort_pending(api);
+    }
+}
diff --git a/src/matrix-api.h b/src/matrix-api.h
index bda305e..0560596 100644
--- a/src/matrix-api.h
+++ b/src/matrix-api.h
@@ -465,6 +465,10 @@ struct _MatrixAPIInterface {
                             gpointer user_data,
                             GError **error);
 
+    /* Non-spec methods */
+
+    void (*abort_pending)(MatrixAPI *api);
+
     /*< private >*/
     /* Leave room for endpoint expansion */
     void *padding[50];
@@ -885,6 +889,10 @@ void matrix_api_get_turn_server(MatrixAPI *api,
                                 gpointer user_data,
                                 GError **error);
 
+/* Non-spec methods */
+
+void matrix_api_abort_pending(MatrixAPI *api);
+
 G_END_DECLS
 
 #endif /* __MATRIX_API_IFACE_H__ */
diff --git a/src/matrix-http-api.c b/src/matrix-http-api.c
index 0ccd0f6..ca1548b 100644
--- a/src/matrix-http-api.c
+++ b/src/matrix-http-api.c
@@ -2832,4 +2832,7 @@ matrix_http_api_matrix_api_init(MatrixAPIInterface *iface)
 
     /* VoIP */
     iface->get_turn_server = NULL;
+
+    /* Non-spec methods */
+    iface->abort_pending = NULL;
 }