r33drichards/mcp-js
MCP Developer ToolsA Rust-based Model Context Protocol (MCP) server that provides a secure, isolated V8 JavaScript runtime for AI agents like Claude and Cursor, with support for async execution, TypeScript, WebAssembly, npm imports, persistent heap snapshots, and configurable storage/transports.
Features
- Async execution model with execution IDs, status polling, output streaming, and cancellation
- Full console.log/console.warn/console.error support with paginated real‑time output
- Native async/await, TypeScript (via SWC), and WebAssembly module compilation
- Dynamic ES‑module imports from npm, JSR, or URL sources without pre‑installing packages
- Content‑addressed V8 heap snapshots for persistence across runs via S3 or local storage
Recent releases
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Install & Platforms
Install via
shell-script
cargo
binary
