{"slug":"horizonpulse-dev-api-seller-dd-single-829c75","title":"Seller due-diligence for one x402 endpoint","host":"horizonpulse.dev","method":"POST","resource":"https://horizonpulse.dev/api/seller-dd/single","category":"market","description":"Seller due-diligence for one x402 endpoint. We make a real capped test payment, check the paid response against the listed schema, compare payTo with the CDP listing, read a recent window of on-chain USDC payments to the payTo and screen for lookalike addresses. Returns a signed JSON verdict of evid","price_listed":5.0,"price_asked":5.0,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":264,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"expected_payTo":null,"resource":"https://example.com/api/paid"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"expected_payTo":{"description":"Optional EVM address to compare with the endpoint's payTo.","type":["string","null"]},"resource":{"description":"https URL of the x402 endpoint to check (required).","format":"uri","maxLength":2048,"type":"string"}},"required":["resource"]},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"description":"Signed JSON verdict of evidenced facts (charged) or a no_charge body (not charged). pass means Horizon Pulse's charge criteria were met; it is not a rating of the seller. The example shows the shape only; seller values are placeholders.","type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":5.0,"price_match":true,"latency_ms":264,"error":null}],"description_full":"Seller due-diligence for one x402 endpoint. We make a real capped test payment, check the paid response against the listed schema, compare payTo with the CDP listing, read a recent window of on-chain USDC payments to the payTo and screen for lookalike addresses. Returns a signed JSON verdict of evidenced facts. No charge unless the test payment and all 4 other checks complete. Facts, not endorsement; no warranty. Not affiliated with the seller checked. $5.","last_updated":"2026-10-23T20:15:36.327Z","schemes":["exact"]}