diff --git a/src/agents/pi-embedded-runner/run/attempt.model-diagnostic-events.ts b/src/agents/pi-embedded-runner/run/attempt.model-diagnostic-events.ts
index c2751106d87..8ed73d50b2e 100644
--- a/src/agents/pi-embedded-runner/run/attempt.model-diagnostic-events.ts
+++ b/src/agents/pi-embedded-runner/run/attempt.model-diagnostic-events.ts
@@ -1,5 +1,6 @@
 import type { StreamFn } from "@mariozechner/pi-agent-core";
 import { diagnosticErrorCategory } from "../../../infra/diagnostic-error-metadata.js";
+export { diagnosticErrorCategory } from "../../../infra/diagnostic-error-metadata.js";
 import {
   emitDiagnosticEvent,
   type DiagnosticEventInput,