diff --git a/genkit-tools/common/src/types/apis.ts b/genkit-tools/common/src/types/apis.ts
index d2dd16dd79..fb262d57ac 100644
--- a/genkit-tools/common/src/types/apis.ts
+++ b/genkit-tools/common/src/types/apis.ts
@@ -61,14 +61,16 @@ export const GetTraceRequestSchema = z.object({
 
 export type GetTraceRequest = z.infer<typeof GetTraceRequestSchema>;
 
-export const ListActionsRequestSchema = z.object({
-  runtimeId: z
-    .string()
-    .optional()
-    .describe(
-      'ID of the Genkit runtime to run the action on. Typically $pid-$port.'
-    ),
-});
+export const ListActionsRequestSchema = z
+  .object({
+    runtimeId: z
+      .string()
+      .optional()
+      .describe(
+        'ID of the Genkit runtime to run the action on. Typically $pid-$port.'
+      ),
+  })
+  .optional();
 
 export type ListActionsRequest = z.infer<typeof ListActionsRequestSchema>;