MCP Sandbox

What is MCP Sandbox?

MCP Sandbox is a tool that transforms any JavaScript module into a sandboxed MCP (Model Context Protocol) server, enabling AI systems to access JavaScript functions securely. It utilizes VM sandboxing for security, automatic type inference, and generates proper MCP configurations.

How to use MCP Sandbox?

To use MCP Sandbox, install it via npm and start the server with a JavaScript module. For example, run mcp-sandbox start ./math-utils.js to initialize the server and access the exposed API endpoints.

Key features of MCP Sandbox?

• Automatic Reflection: Analyzes JS modules and extracts function signatures.
• Secure Sandboxing: Executes code in isolated VM contexts with timeouts.
• Smart Type Inference: Detects parameter types from defaults and naming patterns.
• JSDoc Integration: Extracts documentation from function comments.
• MCP Protocol: Full JSON-RPC 2.0 and SSE support.
• REST API: Legacy REST endpoints for easy testing.
• TypeScript: Full type safety and IntelliSense support.

Use cases of MCP Sandbox?

1. Creating secure APIs for AI tools to interact with JavaScript functions.
2. Running untrusted code safely in a controlled environment.
3. Facilitating the integration of JavaScript libraries with AI systems.

FAQ from MCP Sandbox?

• Can MCP Sandbox handle all JavaScript modules?

Yes! MCP Sandbox can convert any JavaScript module into a sandboxed server.

• Is MCP Sandbox free to use?

Yes! MCP Sandbox is open-source and free to use.

• How does MCP Sandbox ensure security?

MCP Sandbox uses VM isolation, execution timeouts, and memory limits to prevent security vulnerabilities.