From e1e07952cc06cc296eb9f38ca86fe4e60dbca8f3 Mon Sep 17 00:00:00 2001
From: Louis <louis@jan.ai>
Date: Fri, 28 Nov 2025 13:36:16 +0700
Subject: [PATCH] fix: disable JIT by default for npx mcp run

---
 src-tauri/src/core/mcp/helpers.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src-tauri/src/core/mcp/helpers.rs b/src-tauri/src/core/mcp/helpers.rs
index 30a62ec93a..8b7ef15e2d 100644
--- a/src-tauri/src/core/mcp/helpers.rs
+++ b/src-tauri/src/core/mcp/helpers.rs
@@ -670,6 +670,7 @@ async fn schedule_mcp_start_task<R: Runtime>(
             cmd = Command::new(bun_x_path.display().to_string());
             cmd.arg("x");
             cmd.env("BUN_INSTALL", cache_dir.to_str().unwrap());
+            cmd.env("BUN_JSC_useJIT", "0");
         }
 
         let uv_path = if cfg!(windows) {