From eb6fa2c796e57307fcd721123ff22bd18d6c9c9f Mon Sep 17 00:00:00 2001
From: Vikhyath Mondreti <vikhyath@simstudio.ai>
Date: Fri, 24 Apr 2026 16:32:19 -0700
Subject: [PATCH] improvement(mothership): do not silently re-route missing
 stream id

---
 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 7953a11c956..2d116e87ce4 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)
   )