{"uid":"cap_NeUWZdjC_fRXFssSzGxKx","slug":"sentinel-counterparty-verifier-da6bb5f9","name":"Sentinel Counterparty Verifier","description":"Trust infrastructure for autonomous AI agents on Base. Verify protocols, tokens, positions, and counterparties with on-chain EAS attestations. 25 free calls/day, then pay per query in USDC via x402.","url":"https://sentinel-awms.onrender.com/verify/counterparty","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"chain":"base","address":"0x1234567890abcdef1234567890abcdef12345678","verdict":"SAFE","risk_flags":[],"trust_grade":"A","trust_score":88}},"example":{"request":{"chain":"base","detail":"standard","address":"0x940181a94A35A4569E4529A3CDfB74e38FD98631"},"response":{"meta":{"warnings":[],"cache_hit":false,"agent_tier":"unknown","ofac_skipped":false,"data_freshness":"2026-06-12T04:49:28.885Z","response_time_ms":864,"sentinel_version":"0.4.0","cache_ttl_applied":900},"chain":"base","address":"0x940181a94A35A4569E4529A3CDfB74e38FD98631","verdict":"SAFE","evidence":{"sanctions":{"list":null,"sanctioned":false,"addresses_screened":87,"screening_degraded":false},"reputation":{"is_mixer":false,"is_phishing":false,"is_malicious":false,"is_cybercrime":false,"is_money_laundering":false},"exploit_association":{"associated":false}},"confidence":0.9,"risk_flags":["Address is a contract, not an EOA"],"trust_grade":"A"}},"exampleRequest":{"chain":"base","detail":"standard","address":"0x940181a94A35A4569E4529A3CDfB74e38FD98631"},"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_xq0JQ72O4R1xOn1RCQRfN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies an on-chain counterparty address on Base using EAS attestations, returning a trust grade, trust score, risk flags, and a safety verdict","exampleAgentPrompt":"Before I send funds, can you check if the address 0x1234567890abcdef1234567890abcdef12345678 on Base is safe — give me its trust grade and any risk flags?","exampleUseCases":null,"resultDescription":"Returns a JSON object with the chain, address, a verdict (e.g. SAFE or UNSAFE), an array of risk_flags, a letter trust_grade (e.g. A), and a numeric trust_score (0-100).","failureModes":["Invalid or malformed address returns an error response","Address not found on Base returns unknown or unscored result","Exceeds 25 free daily calls without USDC payment triggers 402 payment required","Network or provider downtime on Render may cause 503 errors","Invalid chain identifier returns a validation error"],"whenToPreferThis":"Use this endpoint when an AI agent needs to screen a wallet, smart contract, or DeFi counterparty on Base before executing a transaction, and requires on-chain EAS-backed attestation data rather than off-chain reputation heuristics. Prefer this over generic blockchain explorers when you need a structured trust score and verdict with risk flags.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:41:15.028Z","isFirstParty":false}