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Code Runner Mcp

@mcpc-tech

Run JavaScript/Python code in a secure sandbox with support for **any package import**.
Overview

Use Cases:

  • Let AI quickly test if an npm/python package meets your requirements!
  • Use AI to run code for logic verification, reducing hallucinations!
  • Have AI write and execute testable functions for you! ...and so much more!

Core Capabilities:

  • Secure Sandbox: Code runs in an isolated environment with strict limitations on file system, network, and environment variable access, preventing malicious code from affecting the host environment.
  • Multi-language Support: Execute JavaScript/TypeScript and Python code snippets with ease!
  • Import Any Package: Dynamically import and use external libraries in your code (specific support depends on the chosen runtime).

Please note: First-time package imports require installation time, so please be patient! Subsequent runs will use cached packages, skipping the installation step. Inspired by https://ai.pydantic.dev/mcp/run-python/ project, we've reimplemented it with simplified package installation and added JavaScript support! 🚀✨ Project repository: https://github.com/mcpc-tech/mcpc/tree/main/packages/code-runner-mcp - Issues and PRs welcome!

Server Config

{
  "mcpServers": {
    "code-runner": {
      "command": "npx",
      "args": [
        "-y",
        "deno",
        "run",
        "--allow-all",
        "jsr:@mcpc/code-runner-mcp/bin"
      ],
      "env": {
        "DENO_PERMISSION_ARGS": "--allow-net"
      },
      "transportType": "stdio"
    }
  }
}
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