diff --git a/src/cron/isolated-agent.skips-delivery-without-whatsapp-recipient-besteffortdeliver-true.test.ts b/src/cron/isolated-agent.skips-delivery-without-whatsapp-recipient-besteffortdeliver-true.test.ts
index 4869610dadb..ebb6f8a6dc1 100644
--- a/src/cron/isolated-agent.skips-delivery-without-whatsapp-recipient-besteffortdeliver-true.test.ts
+++ b/src/cron/isolated-agent.skips-delivery-without-whatsapp-recipient-besteffortdeliver-true.test.ts
@@ -288,8 +288,9 @@ describe("runCronIsolatedAgentTurn", () => {
       // Announce delivery failure should not mark a successful agent execution
       // as error. The execution succeeded; only delivery failed.
       expect(res.status).toBe("ok");
-      expect(res.delivered).not.toBe(true);
+      expect(res.delivered).toBe(false);
       expect(res.deliveryAttempted).toBe(true);
+      expect(res.error).toBe("cron announce delivery failed");
       expect(deps.sendMessageTelegram).not.toHaveBeenCalled();
     });
   });
@@ -345,8 +346,9 @@ describe("runCronIsolatedAgentTurn", () => {
       // Even when announce throws (e.g. "pairing required"), the agent
       // execution succeeded so the job status should be ok.
       expect(res.status).toBe("ok");
-      expect(res.delivered).not.toBe(true);
+      expect(res.delivered).toBe(false);
       expect(res.deliveryAttempted).toBe(true);
+      expect(res.error).toContain("pairing required");
       expect(deps.sendMessageTelegram).not.toHaveBeenCalled();
     });
   });
diff --git a/src/cron/isolated-agent/delivery-dispatch.ts b/src/cron/isolated-agent/delivery-dispatch.ts
index 9f7fb016e49..db8f03d383a 100644
--- a/src/cron/isolated-agent/delivery-dispatch.ts
+++ b/src/cron/isolated-agent/delivery-dispatch.ts
@@ -337,6 +337,8 @@ export async function dispatchCronDelivery(
             status: "ok",
             summary,
             outputText,
+            error: message,
+            delivered: false,
             deliveryAttempted,
             ...params.telemetry,
           });
@@ -351,6 +353,8 @@ export async function dispatchCronDelivery(
           status: "ok",
           summary,
           outputText,
+          error: String(err),
+          delivered: false,
           deliveryAttempted,
           ...params.telemetry,
         });