Playwright
microsoft/playwright
Playwright is a framework for web automation and testing. It drives Chromium, Firefox, and WebKit with a single API — in your tests, in your scripts, and as a tool for AI agents.
QuickJS Sandbox
jlucaso1/mcp-javascript-sandbox
A server implementing the Model Context Protocol (MCP) that provides a tool to securely execute arbitrary JavaScript code within a QuickJS engine compiled to WebAssembly (WASM) and run using Node.js's built-in WASI implementation.
Install
See repository
Setup steps are in the repository README.
- GitHub stars
- 3
- Author
- @jlucaso1
- Category
- Developer Tools, Security
- Updated
- Oct 6, 2026
About QuickJS Sandbox
This server acts as an MCP tool provider. It exposes a single tool, run_javascript_code, which takes a string of JavaScript code as input. The code is then executed inside a sandboxed QuickJS WASM environment. The server captures the standard output (stdout) and standard error (stderr) streams from the execution and returns them, along with any execution errors, back to the MCP client.
Features
Secure Execution: Runs JavaScript in a WASM sandbox using QuickJS and Node.js WASI.
Standard I/O Capture: Captures stdout and stderr from the executed JavaScript code.
Error Reporting: Reports runtime errors from QuickJS and non-zero exit codes.
MCP Integration: Exposes functionality as a standard MCP tool over stdio.
Built with TypeScript: Provides type safety during development.
Details on this page are taken from the project's README. Open README
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