js-sandbox-mcp-server
js-sandbox-mcp-serverは、安全なJavaScript実行環境を提供するモデルコンテキストプロトコルサーバーです。コードの実行は隔離された環境で行われ、実行時間やメモリ制限を設定可能です。悪意のあるコードからの保護も施されています。
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js-sandbox MCP Server
A Model Context Protocol server that provides a secure JavaScript execution environment.
Features
Tools
execute_js- Executes JavaScript code in an isolated environment- Parameters:
code(required): JavaScript code to executetimeout(optional): Maximum execution time in milliseconds (100-30000ms)memory(optional): Memory limit in bytes (1MB-100MB)
- Returns the result of code execution
- Parameters:
Security
- Isolated code execution in a controlled environment
- Configurable execution time and memory limits
- Protection against malicious code
Development
Install dependencies:
npm install
Build the server:
npm run build
Development mode with auto-rebuild:
npm run watch
Installation
Installing via Smithery
To install JavaScript Sandbox Server for Claude Desktop automatically via Smithery:
npx -y @smithery/cli install @garc33/js-sandbox-mcp-server --client claude
To use with Claude Desktop, add the server configuration:
MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%/Claude/claude_desktop_config.json
{
"mcpServers": {
"js-sandbox": {
"command": "/path/to/js-sandbox/build/index.js"
}
}
}
Debugging
Since MCP servers communicate over stdio, debugging can be challenging. We recommend using MCP Inspector, which is available as:
npm run inspector
The Inspector will provide a URL to access debugging tools in your browser.