From f16d17ba498c56ecf861dfefed20d3b265efd7ab Mon Sep 17 00:00:00 2001
From: Vikhyath Mondreti <vikhyathvikku@gmail.com>
Date: Fri, 24 Apr 2026 16:37:40 -0700
Subject: [PATCH] improvement(mothership): do not silently re-route missing
 stream id (#4295)

---
 apps/sim/lib/copilot/request/session/contract.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/apps/sim/lib/copilot/request/session/contract.ts b/apps/sim/lib/copilot/request/session/contract.ts
index 7953a11c95..2d116e87ce 100644
--- a/apps/sim/lib/copilot/request/session/contract.ts
+++ b/apps/sim/lib/copilot/request/session/contract.ts
@@ -165,6 +165,7 @@ function isStreamRef(value: unknown): value is MothershipStreamV1StreamRef {
   return (
     isRecord(value) &&
     typeof value.streamId === 'string' &&
+    value.streamId.length > 0 &&
     isOptionalString(value.chatId) &&
     isOptionalString(value.cursor)
   )