Describe the Bug
I need to invoke a process when enabling my customized mcp. It seems that mcp will run fail in 1.0.0, it can succeed in the previous version.
Steps to Reproduce
I need to MCP to run in stdio way, here is my mcp.json
{
“mcpServers”: {
“my_customized_mcp”: {
“command”: “my_customized_mcp.py”
}
}
}
Expected Behavior
In my_customized_mcp.py, I will invoke a process so that all the mcp functions can be called successfully then. But it seems this process can not be created.
Operating System
Windows 10/11
Current Cursor Version (Menu → About Cursor → Copy)
Version: 1.0.0 (user setup)
VSCode Version: 1.96.2
Commit: 53b99ce608cba35127ae3a050c1738a959750860
Date: 2025-06-04T19:44:25.253Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100
Does this stop you from using Cursor
No - Cursor works, but with this issue