{"slug":"402sentinel-com-api-assess-cedb5a","title":"Assess an x402 counterparty before paying","host":"402sentinel.com","method":"POST","resource":"https://402sentinel.com/api/assess","category":"company","description":"Assess an x402 counterparty before paying. POST {target:{payto_address}, payment_context?, policy?}; payto may be a 0x EVM (Base) or base58 Solana seller. Returns risk_score 0-100, decision allow/review/block, confidence, coverage, per-dimension signals, key_factors (what drove the score) and a read","price_listed":0.002,"price_asked":0.002,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":38,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"payment_context":{"description":"Optional context about the payment being considered.","properties":{"amount":{"type":"number"},"asset":{"description":"e.g. \"USDC\"","type":"string"}},"type":"object"},"policy":{"description":"Optional caller policy hints.","type":"object"},"target":{"description":"The x402 seller to score.","properties":{"payto_address":{"description":"Address that receives the payment — 0x EVM (Base) OR base58 Solana.","type":"string"}},"required":["payto_address"],"type":"object"}}},"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"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.002,"price_match":true,"latency_ms":38,"error":null}],"description_full":"Assess an x402 counterparty before paying. POST {target:{payto_address}, payment_context?, policy?}; payto may be a 0x EVM (Base) or base58 Solana seller. Returns risk_score 0-100, decision allow/review/block, confidence, coverage, per-dimension signals, key_factors (what drove the score) and a ready-to-apply recommended_policy. Scored from on-chain settlement behaviour, OFAC sanctions = hard block.","last_updated":"2026-09-14T23:06:06.502Z","schemes":["exact"]}