lzinga/us-gov-open-data-mcp
MCP server + TypeScript SDK for 40+ U.S. government data APIs — 250+ tools. Treasury, FRED, Congress, FDA, CDC, FEC, lobbying, and many more. Works with VS Code Copilot, Claude Desktop, Cursor.
Implements WASM-sandboxed JavaScript execution ("code mode") to reduce context window usage by 98-100% for large responses, and provides built-in cross-referencing logic that guides LLMs to correlate data across agencies (e.g., FDA adverse events + lobbying spend). Dual transport support (stdio for desktop, HTTP Stream for remote) pairs with disk-backed caching and token-bucket rate limiting with exponential backoff. The TypeScript SDK also works standalone without the MCP server, with every API available as a typed importable module.
Available on npm.
Stars
84
Forks
15
Language
TypeScript
License
MIT
Category
Last pushed
Mar 09, 2026
Commits (30d)
0
Dependencies
5
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