{"service":"Revenue Swarm Machine APIs","goal":"Discover a useful endpoint, inspect its unpaid x402 challenge, then retry with a valid x402 payment.","free_preview":"https://eu-tender-x402-v3-production.up.railway.app:3001/preview","discovery":"https://eu-tender-x402-v3-production.up.railway.app:3001/.well-known/x402","openapi":"https://eu-tender-x402-v3-production.up.railway.app:3001/openapi.json","payment_options":"https://eu-tender-x402-v3-production.up.railway.app:3001/payment-options","cheapest_example":"https://eu-tender-x402-v3-production.up.railway.app:3001/api/tender-pulse?q=software&country=DE&days=14","steps":["GET /preview to inspect a free live sample.","GET /.well-known/x402 or /openapi.json to select a tool and read its schema.","Call the paid endpoint without payment and parse the HTTP 402 accepts metadata.","Create the x402 payment using a compatible buyer client and retry the same request with its payment proof header.","Treat the response as paid only when HTTP success and PAYMENT-RESPONSE are present; seller revenue is independently chain-verified."],"buyer_sdk_hint":"@x402/fetch","stats":"https://eu-tender-x402-v3-production.up.railway.app:3001/stats"}