diff --git a/packages/element-web-module-api/element-web-module-api.api.md b/packages/element-web-module-api/element-web-module-api.api.md
index b31cee299d..3ebf946d32 100644
--- a/packages/element-web-module-api/element-web-module-api.api.md
+++ b/packages/element-web-module-api/element-web-module-api.api.md
@@ -167,6 +167,7 @@ export interface DirectoryCustomisations {
 
 // @alpha
 export interface ExtrasApi {
+    getVisibleRoomBySpaceKey(spaceKey: string, cb: () => string[]): void;
     setSpacePanelItem(spaceKey: string, props: SpacePanelItemProps): void;
 }
 
diff --git a/packages/element-web-module-api/src/api/extras.ts b/packages/element-web-module-api/src/api/extras.ts
index 135c1f9b56..5ffc9c4f16 100644
--- a/packages/element-web-module-api/src/api/extras.ts
+++ b/packages/element-web-module-api/src/api/extras.ts
@@ -56,4 +56,15 @@ export interface ExtrasApi {
      * @param props - Properties of the item to add.
      */
     setSpacePanelItem(spaceKey: string, props: SpacePanelItemProps): void;
+
+    /**
+     * Registers a callback to get the list of visible rooms for a given space.
+     *
+     * Element Web will call this callback when checking if a room is displayed for the given space. For example in case of message editing or replying.
+     * If the space added by the module displays a room view and doesn't provide this callback, Element Web won't be able to determine if a room is visible in that space and will redirect to display the room in its vanilla space/metaspace.
+     *
+     * @param spaceKey - The space key to get visible rooms for.
+     * @param cb - A callback that returns the list of visible room IDs.
+     */
+    getVisibleRoomBySpaceKey(spaceKey: string, cb: () => string[]): void;
 }