You may know that I developed a Code Runner VS Code extension with over 70 million downloads: https://marketplace.visualstudio.com/items?itemName=formulahendry.code-runner
So, if we take the code execution feature of Code Runner and turn it into an MCP Server, wouldn't that be super powerful?
On night, I decided to go for it!
Design, develop, debug, test, and release — all in one go!
I released the Code Runner MCP Server:
https://www.npmjs.com/package/mcp-server-code-runner
Because it supports running multiple programming languages, you can even use mainstream languages like Python or JavaScript to interact with the Code Runner MCP Server, making it a flexible and powerful Computer Use tool!
This tool can do anything!
For example, you can query the CPU information of the current OS:
Or check the latest MSFT stock price:
Or take a screenshot of the current window and save it locally:
In the examples above, when a pip package isn't installed, the GH Copilot Agent can even help install it automatically, completing the screenshot task in the end!
Simple, but it just works!
Anything that Python or JavaScript can do, the Code Runner MCP Server can do too!
You can use the Code Runner MCP Server on any client that supports the MCP protocol: VS Code, Cursor, Windsurf, Claude Desktop, etc. (Note: VS Code needs to be the latest Insider version.)
Supported Programming Languages
- JavaScript
- PHP
- Python
- Perl
- Perl 6
- Ruby
- Go
- Lua
- Groovy
- PowerShell
- BAT/CMD
- BASH/SH
- F# Script
- C# Script
- VBScript
- TypeScript
- CoffeeScript
- Scala
- Swift
- Julia
- Crystal
- OCaml Script
- R
- AppleScript
- Elixir
- Clojure
- Racket
- Scheme
- AutoHotkey
- AutoIt
- Kotlin Script
- Dart
- Haskell
- Ni
- Lisp
- Kit
- V
- SCSS
- Sass
Currently, the Code Runner MCP Server only supports stdio. In the future, after supporting SSE, it could even run remotely!
Let me know if you have any feedback!
Last but not least, it is fully open source:
https://github.com/formulahendry/mcp-server-code-runner/
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