x402 Pay — USDC API Payment Helper MCP Tools

x402 Pay — USDC API Payment Helper exposes 4 tools. Each one has its own page with the configuration for every client that can run this server.

payment_info

payment info
list_paid_apis Read-only

list paid apis
check_payment Read-only

check payment
check_status Read-only

check status

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.

x402 Pay — USDC API Payment Helper MCP server