diff --git a/.changeset/shaggy-queens-brake.md b/.changeset/shaggy-queens-brake.md
new file mode 100644
index 0000000..e74c20b
--- /dev/null
+++ b/.changeset/shaggy-queens-brake.md
@@ -0,0 +1,6 @@
+---
+"@open-pioneer/runtime": patch
+"@open-pioneer/integration": patch
+---
+
+Allow synchronous `getApiMethods()` when implementing an `ApiExtension`.
diff --git a/src/packages/runtime/api.ts b/src/packages/runtime/api.ts
index dda7d97..74cdcc5 100644
--- a/src/packages/runtime/api.ts
+++ b/src/packages/runtime/api.ts
@@ -17,7 +17,7 @@ export interface ApiExtension {
     /**
      * Returns a set of methods that will be added to the web component's API.
      */
-    getApiMethods(): Promise<ApiMethods>;
+    getApiMethods(): Promise<ApiMethods> | ApiMethods;
 }
 
 /**