python12

abc222052010/python12

0 Stars 19 次浏览更新于 2026-08-23

Code Runner MCP 是一个工具，它允许AI执行带有任何包导入的JavaScript和Python代码。它提供了一个安全沙箱、npm/PyPI包的按需安装、通过让AI验证逻辑来减少幻觉，并且无需本地安装即可快速验证包。

开发者工具

MCP 服务配置

复制以下 JSON 到 OPClaw 或其他 MCP 客户端的配置文件中即可使用

{
  "mcpServers": {
    "code-runner": {
      "args": [
        "-y",
        "@mcpc-tech/code-runner-mcp"
      ],
      "command": "npx",
      "env": {
        "DENO_PERMISSION_ARGS": "--allow-net",
        "NODEFS_MOUNT_POINT": "/tmp",
        "NODEFS_ROOT": "/tmp",
        "NODE_OPTIONS": "--experimental-wasm-stack-switching"
      },
      "transportType": "stdio"
    }
  }
}

该服务需要配置环境变量：DENO_PERMISSION_ARGS、NODEFS_MOUNT_POINT、NODEFS_ROOT、NODE_OPTIONS

服务介绍

Code Runner MCP

Let AI execute JavaScript/Python code with any package imports!

Core Value

Secure Sandbox: Isolated execution environment protecting your host system
Install-on-Demand: Dynamically import any npm/PyPI packages
Reduce Hallucinations: Let AI verify logic by executing code
Quick Validation: Test if packages meet your needs without local
installation

Installation

JSR (Recommended)

deno add jsr:@mcpc/code-runner-mcp

Package: @mcpc/code-runner-mcp

npm

npm install @mcpc-tech/code-runner-mcp

Package: @mcpc-tech/code-runner-mcp

Quick Start

Option 1: Using Deno (Recommended)

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

Option 2: Using Node.js

{
  "mcpServers": {
    "code-runner": {
      "command": "npx",
      "args": ["-y", "@mcpc-tech/code-runner-mcp"],
      "env": {
        "NODE_OPTIONS": "--experimental-wasm-stack-switching",
        "DENO_PERMISSION_ARGS": "--allow-net",
        "NODEFS_ROOT": "/tmp",
        "NODEFS_MOUNT_POINT": "/tmp"
      },
      "transportType": "stdio"
    }
  }
}

Note: NODE_OPTIONS=--experimental-wasm-stack-switching is required for
Pyodide (WebAssembly Python runtime) to work properly in Node.js.

Use Cases

JavaScript/TypeScript

// Import npm packages directly to test functionality
import { z } from "npm:zod";
import { serve } from "jsr:@std/http";

const schema = z.object({ name: z.string() });
console.log(schema.parse({ name: "test" }));

Python

# Dynamically install and use Python packages
import requests
response = requests.get("https://api.github.com")
print(f"Status code: {response.status_code}")

Package Mapping

When import names differ from PyPI package names, use the packages parameter:

# sklearn -> scikit-learn, PIL -> Pillow
from sklearn.datasets import load_iris
data = load_iris()
print(data.feature_names)

Use packages: {"sklearn": "scikit-learn"}

File System Access

# Access host file system (via NODEFS_ROOT and NODEFS_MOUNT_POINT)
import os
files = os.listdir('/tmp')  # List files at the mount point
print(f"Found {len(files)} files")

Environment Variables

Variable	Description	Default
`ALLOWED_TOOLS`	Selectively enable tools: `all`, `python`, `javascript`, `js`, or comma-separated (e.g., `python,javascript`)	`all`
`DENO_PERMISSION_ARGS`	Additional Deno permissions for JS/TS execution (e.g., `--allow-net`, `--allow-all`)	-
`NODEFS_ROOT`	Host file system root directory path for Python access	-
`NODEFS_MOUNT_POINT`	Mount point path in Python environment (defaults to `NODEFS_ROOT`)	-
`PYODIDE_PACKAGE_BASE_URL`	Custom package download source for Pyodide (e.g., private mirror CDN)	-
`PYODIDE_PACKAGE_CACHE_DIR`	Custom package cache directory for Pyodide packages (Pyodide v0.28.1+)	-

Tool Selection Examples

// Enable only Python
{ "ALLOWED_TOOLS": "python" }

// Enable only JavaScript
{ "ALLOWED_TOOLS": "javascript" }

// Enable both (default)
{ "ALLOWED_TOOLS": "python,javascript" }

Security Features

Deno Sandbox: Strict permission control with explicit authorization
Pyodide WASM: WebAssembly isolated environment
File System Isolation: Controlled host file access

Technical Architecture

JavaScript/TypeScript: Powered by Deno runtime
Python: Powered by Pyodide WebAssembly technology
Package Management: Dynamic installation from npm, JSR, and PyPI

Issues & Feedback:
GitHub Issues
Repository:
GitHub Repository

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