preflight402 for Claude Code

io.ironshell/preflight402

Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.

client:Claude Code transport:streamable-http

Install preflight402 in Claude Code

run in your project directory

claude mcp add --transport http preflight402 https://preflight402.ironshell.io/mcp

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