ecfr mcp for Claude Code

io.github.mrfentmen/ecfr-mcp

eCFR: US federal regulation titles with amendment dates from the official API - keyless.

client:Claude Code transport:stdio runtime:npm

Install ecfr mcp in Claude Code

run in your project directory

claude mcp add ecfr-mcp -- npx -y @mrfentmen/ecfr-mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs