{"name":"checkout402","version":"0.0.0","status":"ok","what":"a checkout for agentic commerce — x402, non-custodial, USDC on Base","links":{"openapi":"https://api.checkout402.com/openapi.json","llms":"https://api.checkout402.com/llms.txt","create":"https://api.checkout402.com/create","create_checkout":"https://api.checkout402.com/v1/checkouts","join_challenge":"https://api.checkout402.com/auth/wallet/challenge","join_verify":"https://api.checkout402.com/auth/wallet/verify","mcp":"https://api.checkout402.com/mcp","site":"https://checkout402.com"},"buying":"open a checkout URL, get 402 with price, sign x402 payment, retry — goods + receipt in one round trip","selling":"POST /auth/wallet/challenge {address, network}, sign, POST /auth/wallet/verify -> automation key"}