{"uid":"cap_A4eGDl0BhL-44Z42XO1Lz","slug":"402sentinel-deep-assessment-af95e1c1","name":"402Sentinel Deep Assessment","description":"Is this payment address safe to pay? DEEP version — deep counterparty assessment: same shape as /api/assess but scans more on-chain settlement history for higher confidence. POST {target:{payto_address}, payment_context?, policy?}. Returns risk_score 0-100, allow/review/block, confidence, per-dimension signals, key_factors and a recommended_policy. Use when the payment is large enough that a thin-data 'review' verdict is not good enough.","url":"https://402sentinel.com/api/assess/deep","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"policy":{"type":"object","description":"Optional caller policy hints."},"target":{"type":"object","required":["payto_address"],"properties":{"payto_address":{"type":"string","description":"Address that receives the payment — 0x EVM (Base) OR base58 Solana."}},"description":"The x402 seller to score."},"payment_context":{"type":"object","properties":{"asset":{"type":"string","description":"e.g. \"USDC\""},"amount":{"type":"number"}},"description":"Optional context about the payment being considered."}}},"responseSchema":null,"example":{"request":{"policy":{"min_confidence":0.5,"max_payment_usdc":50,"review_ceiling_usdc":5},"target":{"payto_address":"0x6a5e7d954f49712abf3f873f037ec845b7b8c666"},"payment_context":{"asset":"USDC","amount":10}},"response":{"as_of":"2026-06-12T04:57:39+00:00","coverage":{"age_days":114,"is_contract":false,"real_payers":190,"data_sources":["base_blockscout","outcome_flywheel","x402_registry"],"distinct_payers":190,"outcome_reports":0,"dimensions_scored":["identity_provenance","sybil_flow","settlement_maturity","sanctions"],"settlements_observed":300,"facilitators_excluded":0},"decision":"allow","confidence":0.85,"dimensions":[{"key":"identity_provenance","score":18,"weight":0.25,"signals":["address 114d old (established)"],"available":true},{"key":"sybil_flow","score":20,"weight":0.35,"signals":["190 distinct real payers (healthy diversity)"],"available":true},{"key":"settlement_maturity","score":15,"weight":0.2,"signals":["300+ settlements observed (active)"],"available":true},{"key":"settlement_reliability","score":50,"weight":0.25,"signals":["no delivery outcomes reported yet"],"available":false},{"key":"registry_concentration","score":35,"weight":0.1,"signals":["payTo not present in the seeded x402 registry — no listing context"],"available":false},{"key":"sanctions","score":5,"weight":0,"signals":["no direct OFAC / known-illicit match (direct-match only, 97 entries)"],"available":true}],"risk_score":18,"assessment_id":"ca_e28285d96c2870d0e5","recommendation":"Acceptable counterparty for this amount.","recommended_policy":{"model":"402sentinel/policy-v0","action":"allow","rationale":"Low risk — allow up to 40.94 USDC per payment (204.7 USDC/day).","daily_cap_usdc":204.7,"add_to_denylist":false,"max_payment_usdc":40.94,"require_human_approval":false,"proposed_amount_within_cap":true}}},"exampleRequest":{"policy":{"min_confidence":0.5,"max_payment_usdc":50,"review_ceiling_usdc":5},"target":{"payto_address":"0x6a5e7d954f49712abf3f873f037ec845b7b8c666"},"payment_context":{"asset":"USDC","amount":10}},"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1fQsgTQ0J9Ps1j6dQPgVZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Scores an x402 payment counterparty 0-100 for risk using on-chain settlement behaviour and returns an allow/review/block decision before you pay","exampleAgentPrompt":"Before paying that x402 API, run a deep risk check on counterparty address 0xAbC...123 on Base and tell me the risk score and whether I should allow, review, or block the payment.","exampleUseCases":null,"resultDescription":"Returns a 0-100 risk score and a three-tier decision (allow / review / block) derived from on-chain signals including address age, facilitator-aware payer diversity, and settlement maturity for the assessed counterparty address.","failureModes":["Address not found on Base — insufficient on-chain history to score","Invalid or malformed address input — 400 error","Address too new with no settlement history — low-confidence score returned","x402 payment for the call itself fails — 402 response before assessment is returned","Rate limiting or service unavailability — 503 error"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to gate an x402 payment decision with on-chain counterparty risk data before committing funds, especially when the counterparty address is unfamiliar, newly encountered, or flagged for review. Prefer the deep assessment variant over lighter checks when settlement maturity and facilitator-aware payer diversity signals are needed for a thorough risk evaluation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:37:44.939Z","isFirstParty":false}