keryx for Claude Code

io.github.tang-vu/keryx

Autonomous research agent that pays every source it cites in USDC on Arc via x402 micropayments.

client:Claude Code transport:streamable-http runtime:npm tools:2

Install keryx in Claude Code

run in your project directory

claude mcp add --transport http keryx https://keryx.cc/mcp

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