diff --git a/packages/cordis/tool-cordis/src/api-catalog.ts b/packages/cordis/tool-cordis/src/api-catalog.ts
index ff27f51067..ede7935f8e 100644
--- a/packages/cordis/tool-cordis/src/api-catalog.ts
+++ b/packages/cordis/tool-cordis/src/api-catalog.ts
@@ -72,6 +72,7 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
       'enter(agent: Agent, owner: Agent | undefined): () => void',
       'announce(agent: Agent): void',
       'get(id: SessionId): Agent | undefined',
+      'isOwnedBy(id: SessionId, owner: Agent): boolean',
       'list(): Agent[]',
       'roots(): Agent[]',
     ],