{"uid":"cap_w7iIcq28xt1TJoK2eGXyA","slug":"sentinel-protocol-verifier-68b42cae","name":"Sentinel Protocol 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/protocol?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"chain":"base","address":"0x2626664c2603336e57b271c5c0b26f421741e481","verdict":"LOW_RISK","confidence":0.88,"risk_flags":["Proxy contract (Proxy) - admin upgrade possible"],"trust_grade":"B","trust_score":70}},"example":{"request":{"chain":"base","detail":"standard","address":"0x940181a94A35A4569E4529A3CDfB74e38FD98631"},"response":{"meta":{"cache_hit":false,"agent_tier":"unknown","data_freshness":"2026-06-16T17:17:40.554Z","response_time_ms":2061,"sentinel_version":"0.4.0","cache_ttl_applied":600,"contract_metadata_degraded":false},"chain":"base","address":"0x940181a94A35A4569E4529A3CDfB74e38FD98631","verdict":"CAUTION","evidence":{"tvl":{"stable":false,"trend_30d":"-17.3%","current_usd":24590153},"audit":{"audited":true,"auditors":["Ether Authority"],"last_audit":"2024-06-05","months_since_audit":25},"contract":{"age_days":null,"proxy_pattern":null,"owner_is_multisig":null},"exploit_history":{"exploited":false,"incidents":[]}},"confidence":0.88,"risk_flags":["Audit is 25 months old - may not reflect current code"],"trust_grade":"C"}},"exampleRequest":{"chain":"base","detail":"standard","address":"0x940181a94A35A4569E4529A3CDfB74e38FD98631"},"tags":["x402"],"displayCostAmount":"0.008","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":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_3Um4T7G_BQZFtA2MBrJ3u","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a DeFi protocol's on-chain address on Base and returns a risk verdict, trust grade, confidence score, and specific risk flags using EAS attestations.","exampleAgentPrompt":"Can you run a Sentinel trust check on the Base protocol at address 0x2626664c2603336e57b271c5c0b26f421741e481 and tell me the risk verdict, trust grade, and any specific risk flags before I deposit funds?","exampleUseCases":null,"resultDescription":"A JSON object containing: the chain ('base'), the queried address, a verdict (e.g. LOW_RISK/MEDIUM_RISK/HIGH_RISK), a confidence score (0–1), a trust grade letter (A–F), a numeric trust score (0–100), and an array of specific risk flags such as 'Proxy contract - admin upgrade possible'.","failureModes":["Unknown or unindexed address returns low confidence or insufficient data","Invalid address format returns a 400-level error","Network unavailability on Base may delay attestation lookup","Daily free tier (25 calls) exceeded without USDC payment configured returns 402","Address on non-Base chain returns unsupported chain error"],"whenToPreferThis":"Use this endpoint when an AI agent needs to autonomously assess the safety of a specific DeFi protocol or smart contract on the Base network before executing a transaction or recommending an interaction. Preferred over generic block explorers when you need a structured, machine-readable risk verdict with confidence scores and enumerated risk flags rather than raw on-chain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T06:45:21.362Z","isFirstParty":false,"canonicalSlug":"sentinel-protocol-verifier-68b42cae"}