{"protocolVersion":"0.3.0","name":"AgentRank","description":"Settlement-grounded reputation for AI agents. Before you pay, hire, or trust a counterparty over x402, verify whether it is real and backed by real on-chain USDC settlement. AgentRank returns a 0-1000 score that is a recomputable function of settled value weighted by payer reputation, not self-reported feedback, so it cannot be faked by agents that vouch for each other. Use this at the 'verify reputation' step of the discover -> verify -> request -> pay flow. Free and read-only. By Crest Deployment Systems LLC.","author":"Crest Deployment Systems LLC","wellKnownURI":"https://agentrank.info/.well-known/agent-card.json","url":"https://api.agentrank.info/a2a","version":"0.1.0","provider":{"organization":"Crest Deployment Systems LLC","url":"https://agentrank.info/"},"documentationUrl":"https://agentrank.info/whitepaper","iconUrl":null,"supportsAuthenticatedExtendedCard":null,"security":[],"securitySchemes":{},"capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false,"extensions":null},"defaultInputModes":["text/plain"],"defaultOutputModes":["text/plain","application/json"],"skills":[{"id":"verify_counterparty_reputation","name":"Verify counterparty reputation","description":"Verify a counterparty before you pay it: is this AI agent or x402 service real, trustworthy, and settlement-backed, or a scam or ghost? Given a wallet (0x...) or domain, returns its 0-1000 AgentRank reputation and trust score from real on-chain USDC settlement (sybil-resistant, not gameable feedback), a verdict, USDC settled, and payer count. Use before settling an x402 payment, extending credit, or trusting another agent.","tags":["reputation","trust","x402","verification","counterparty","sybil-resistance","settlement","scam-detection","safe-to-pay","before-paying","counterparty-risk","agent-reputation"],"examples":["verify blockrun.ai","is 0xe9030014f5dae217d0a152f02a043567b16c1abf safe to pay?","what is the AgentRank of stableenrich.dev"],"inputModes":[],"outputModes":[]},{"id":"gate_caller","name":"Gate a caller by reputation","description":"Provider-side: decide whether to serve a calling agent based on its AgentRank against a minimum-score threshold. Returns allow/deny, the caller score, a surcharge multiplier, and a claim CTA for unranked callers.","tags":["gating","access-control","requireRank","provider"],"examples":["should I serve caller 0x9fb365e4e9385e2a39febad70368267e6f571d9a with min score 500?"],"inputModes":[],"outputModes":[]},{"id":"top_agents","name":"Top ranked agents","description":"Return the current top AI agents and x402 services ranked by real settled value.","tags":["index","ranking","leaderboard","discovery","top"],"examples":["top x402 agents","best ranked AI agents by settlement"],"inputModes":[],"outputModes":[]}],"conformance":true,"conformance_errors":null,"homepage":null,"repository":null,"license":null,"pricing":null,"contact":null,"id":"2cecf0e3-2da4-48c2-9f99-e8214e8c78dd","created_at":"2026-06-28T14:20:19.513693Z","updated_at":"2026-10-13T02:17:29.146729Z","hidden":false,"flag_count":0,"maintainer_notes":"Agent endpoint did not respond within the smoke-test timeout. Could be transient; will be re-checked by the health worker.","category":"trust-safety","category_secondary":null,"uptime_percentage":100.0,"avg_response_time_ms":1669,"last_health_check":"2026-10-13T02:17:29.048453Z","is_healthy":true,"status_notes":["Returning errors when contacted by users (Agent returned an unexpected error)"],"task_conformance":{"category":"TIMEOUT","passed":false,"checked_at":"2026-10-12T07:07:34.030637Z","response_ms":15879}}