x402 Preflight for Claude Code

io.github.chico10117/x402-preflight

Check an x402 endpoint's payment challenge and discovery metadata before paying.

client:Claude Code transport:streamable-http tools:3

Install x402 Preflight in Claude Code

run in your project directory

claude mcp add --transport http x402-preflight https://x402.chikocorp.com/mcp

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