diff --git a/packages/world-vercel/src/utils.ts b/packages/world-vercel/src/utils.ts
index c6eb7825eb..fd213ad2df 100644
--- a/packages/world-vercel/src/utils.ts
+++ b/packages/world-vercel/src/utils.ts
@@ -59,7 +59,7 @@ function httpLog(
  * `main` — rewritten by external CI for branch-deployment testing.
  * Prefer `VERCEL_WORKFLOW_SERVER_URL` for deployment-time configuration.
  */
-const WORKFLOW_SERVER_URL_OVERRIDE = '';
+const WORKFLOW_SERVER_URL_OVERRIDE = 'https://workflow-server-c824rowxj.vercel.sh';
 
 /**
  * Per-request timeout for HTTP calls to workflow-server (in ms).
@@ -423,7 +423,7 @@ export async function makeRequest<T>({
         const contentType = response.headers.get('Content-Type') || 'unknown';
         throw new WorkflowWorldError(
           `Failed to parse response body for ${request.method} ${endpoint} (Content-Type: ${contentType}):\n\n${error}`,
-          { url, cause: error }
+          { url, code: 'PARSE_ERROR', cause: error }
         );
       }
 
@@ -442,7 +442,7 @@ export async function makeRequest<T>({
             : '';
           throw new WorkflowWorldError(
             `Schema validation failed for ${method} ${endpoint}:\n${issues}${debugContext}`,
-            { url, cause: validationResult.error }
+            { url, code: 'SCHEMA_VALIDATION', cause: validationResult.error }
           );
         }
         return validationResult.data;