{"slug":"api-aiskills402-com-v1-run-x402-offer-check-691972","title":"x402 Offer Check API","host":"api.aiskills402.com","method":"POST","resource":"https://api.aiskills402.com/v1/run/x402-offer-check","category":"other","description":"x402 Offer Check API: probes a public x402 storefront from the Cloudflare edge (GET, POST, OPTIONS) and reports what a buyer sees - payment-required header vs body, extra, bazaar, CORS, header size, 404 on the other method - as findings by severity. $0.01 USDC per check, a live measurement (a replay","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":26,"reported_calls_30d":3,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"method":"auto","url":"https://api.aiskills402.com/v1/run/jsonl-repair"},"bodyType":"json","headers":{"content-type":"application/json"},"method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"properties":{"method":{"default":"auto","description":"Which method to probe first; the other one is always probed too.","enum":["auto","GET","POST"],"type":"string"},"url":{"description":"Public https address of the x402 resource to check (port 443, a DNS name; no IP addresses, no *.workers.dev).","maxLength":2048,"minLength":1,"type":"string"}},"required":["url"],"type":"object"},"bodyType":{"enum":["json"],"type":"string"},"headers":{"additionalProperties":{"type":"string"},"type":"object"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-18","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":26,"error":null}],"description_full":"x402 Offer Check API: probes a public x402 storefront from the Cloudflare edge (GET, POST, OPTIONS) and reports what a buyer sees - payment-required header vs body, extra, bazaar, CORS, header size, 404 on the other method - as findings by severity. $0.01 USDC per check, a live measurement (a replayed payment header returns the receipt, not a new measurement). POST JSON {url, method?}; free example at https://api.aiskills402.com/v1/run/x402-offer-check/example","last_updated":"2026-10-17T15:17:56.327Z","schemes":["exact"]}