From e188ff992bc806a05fdff11792d8fc7e6b62989c Mon Sep 17 00:00:00 2001
From: Danny Avila <danny@librechat.ai>
Date: Fri, 3 Apr 2026 17:47:33 -0400
Subject: [PATCH] fix: tighten isClientRejection heuristic

Narrow 'client_id' match to 'client_id mismatch' to avoid
false-positive cleanup on unrelated errors that happen to
mention client_id.
---
 packages/api/src/mcp/MCPConnectionFactory.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/api/src/mcp/MCPConnectionFactory.ts b/packages/api/src/mcp/MCPConnectionFactory.ts
index 49ca3a6b96..26d83e5330 100644
--- a/packages/api/src/mcp/MCPConnectionFactory.ts
+++ b/packages/api/src/mcp/MCPConnectionFactory.ts
@@ -507,7 +507,7 @@ export class MCPConnectionFactory {
       return (
         msg.includes('invalid_client') ||
         msg.includes('unauthorized_client') ||
-        msg.includes('client_id') ||
+        msg.includes('client_id mismatch') ||
         msg.includes('client not found') ||
         msg.includes('unknown client')
       );