diff --git a/artifacts/api-server/src/routes/jobs.ts b/artifacts/api-server/src/routes/jobs.ts
index 744e504..6ee8a81 100644
--- a/artifacts/api-server/src/routes/jobs.ts
+++ b/artifacts/api-server/src/routes/jobs.ts
@@ -215,7 +215,11 @@ router.post("/jobs", async (req: Request, res: Response) => {
 
     res.status(201).json({
       jobId,
-      evalInvoice: { paymentRequest: lnbitsInvoice.paymentRequest, amountSats: evalFee },
+      evalInvoice: {
+        paymentRequest: lnbitsInvoice.paymentRequest,
+        amountSats: evalFee,
+        ...(lnbitsService.stubMode ? { paymentHash: lnbitsInvoice.paymentHash } : {}),
+      },
     });
   } catch (err) {
     const message = err instanceof Error ? err.message : "Failed to create job";
diff --git a/attached_assets/IMG_0027_1773866089965.jpeg b/attached_assets/IMG_0027_1773866089965.jpeg
new file mode 100644
index 0000000..e3392a6
Binary files /dev/null and b/attached_assets/IMG_0027_1773866089965.jpeg differ