{"slug":"x402meta-hergertsynthora-com-service-f3df33","title":"x402 preflight / reputation — verify BEFORE you pay","host":"x402meta.hergertsynthora.com","method":"POST","resource":"https://x402meta.hergertsynthora.com/service","category":"market","description":"x402 preflight / reputation — verify BEFORE you pay. Give it an x402 endpoint_url (or a payTo address) and it returns, in one cheap deterministic call: is the resource reachable, is it present in the CDP Bazaar discovery catalog (serviceName, declared payTo, price, network, tags, last_seen), and — t","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":1265,"reported_calls_30d":5,"reported_payers_30d":3,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"endpoint_url":"https://api.exa.ai/search"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"anyOf":[{"required":["endpoint_url"]},{"required":["payTo"]}],"properties":{"endpoint_url":{"description":"The x402 endpoint URL to preflight (http/https). Either this or payTo is required.","type":"string"},"payTo":{"description":"A payTo address (0x…40hex) to look up in the catalog instead of / in addition to a URL.","type":"string"},"prev":{"description":"Optional prior snapshot to detect change (anti-rug).","properties":{"amount":{"type":"string"},"lastUpdated":{"type":"string"},"payTo":{"type":"string"}},"type":"object"}},"type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"niche":{"type":"string"},"ok":{"type":"boolean"},"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":1265,"error":null}],"description_full":"x402 preflight / reputation — verify BEFORE you pay. Give it an x402 endpoint_url (or a payTo address) and it returns, in one cheap deterministic call: is the resource reachable, is it present in the CDP Bazaar discovery catalog (serviceName, declared payTo, price, network, tags, last_seen), and — the key integrity check — does the payTo the endpoint actually demands in its live HTTP 402 challenge MATCH the payTo the catalog advertises (payTo_match). It runs a keyless HEAD/OPTIONS/402 probe that never moves funds, extracts the real payTo/amount/asset/network from the challenge, scores listing freshness, and — if you pass a prev snapshot {payTo,amount,lastUpdated} — flags whether the endpoint changed since you last saw it (anti-rug). Output is a 0-100 scorecard + letter grade + reason codes + an actionable verdict (pay_ok / caution / do_not_pay). For any router, wallet agent or M2M client that pays third-party x402 endpoints and needs to avoid paying a hijacked, dead, or repriced resource. Deterministic, no LLM, Ed25519-signed. 0.01 USDC via x402 on Base. SYNTHORA.","last_updated":"2026-09-17T03:55:26.163Z","schemes":["exact"]}