diff --git a/src/cron/isolated-agent/delivery-dispatch.error-guard.test.ts b/src/cron/isolated-agent/delivery-dispatch.error-guard.test.ts
index fec7f8e17e8..29ce8a87bff 100644
--- a/src/cron/isolated-agent/delivery-dispatch.error-guard.test.ts
+++ b/src/cron/isolated-agent/delivery-dispatch.error-guard.test.ts
@@ -134,11 +134,15 @@ describe("isLikelyRawErrorOutput", () => {
   it("detects JS runtime exceptions", () => {
     expect(isLikelyRawErrorOutput("TypeError: Cannot read properties of undefined")).toBe(true);
     expect(isLikelyRawErrorOutput("RangeError: Maximum call stack size exceeded")).toBe(true);
-    expect(isLikelyRawErrorOutput("Error: ECONNREFUSED")).toBe(true);
     expect(isLikelyRawErrorOutput("SyntaxError: Unexpected token")).toBe(true);
     expect(isLikelyRawErrorOutput("ReferenceError: x is not defined")).toBe(true);
   });
 
+  it("does not flag bare Error: prefix (could be legitimate monitoring prose)", () => {
+    expect(isLikelyRawErrorOutput("Error: ECONNREFUSED")).toBe(false);
+    expect(isLikelyRawErrorOutput("Error: API latency exceeded threshold")).toBe(false);
+  });
+
   it("detects common provider error messages in JSON", () => {
     const error = `{"message":"An error occurred while processing your request. You can retry your request."}`;
     expect(isLikelyRawErrorOutput(error)).toBe(true);
@@ -248,7 +252,7 @@ describe("dispatchCronDelivery — error output guard", () => {
   });
 
   it("preserves summary and outputText in the returned state even when skipping", async () => {
-    const errorText = "Error: ECONNREFUSED 127.0.0.1:18789";
+    const errorText = "TypeError: Cannot read properties of undefined (reading 'send')";
     const params = makeBaseParams({ synthesizedText: errorText });
     const state = await dispatchCronDelivery(params);
 
diff --git a/src/cron/isolated-agent/delivery-dispatch.ts b/src/cron/isolated-agent/delivery-dispatch.ts
index 822754cf8d2..412612a9eba 100644
--- a/src/cron/isolated-agent/delivery-dispatch.ts
+++ b/src/cron/isolated-agent/delivery-dispatch.ts
@@ -289,7 +289,7 @@ async function retryTransientDirectCronDelivery<T>(params: {
  */
 const RAW_ERROR_OUTPUT_PATTERNS: readonly RegExp[] = [
   /^\s*\{[\s\S]*"(?:type|error|code)":\s*"(?:error|server_error|invalid_request)/,
-  /^\s*(?:Error|TypeError|RangeError|SyntaxError|ReferenceError):/,
+  /^\s*(?:TypeError|RangeError|SyntaxError|ReferenceError):/,
   /^\s*\{[\s\S]*"(?:message|error)":\s*"An error occurred/,
   /\berror"?:\s*\{[\s\S]*"(?:type|code)":\s*"(?:server_error|invalid_request|rate_limit)/,
 ];