{"id":184,"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.","card_url":"https://agentrank.info/.well-known/agent-card.json","endpoint":"https://api.agentrank.info/a2a","protocol_version":"0.3.0","first_seen":"2026-10-07T07:26:56.722990+00:00","last_verified":"2026-10-07T08:55:15.054211+00:00","card":{"url":"https://api.agentrank.info/a2a","name":"AgentRank","skills":[{"id":"verify_counterparty_reputation","name":"Verify counterparty reputation","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"],"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."},{"id":"gate_caller","name":"Gate a caller by reputation","tags":["gating","access-control","requireRank","provider"],"examples":["should I serve caller 0x9fb365e4e9385e2a39febad70368267e6f571d9a with min score 500?"],"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."},{"id":"top_agents","name":"Top ranked agents","tags":["index","ranking","leaderboard","discovery","top"],"examples":["top x402 agents","best ranked AI agents by settlement"],"description":"Return the current top AI agents and x402 services ranked by real settled value."}],"version":"0.1.0","provider":{"url":"https://agentrank.info","organization":"Crest Deployment Systems LLC"},"signatures":[{"protected":"eyJhbGciOiJFUzI1NiIsInR5cCI6IkpPU0UiLCJraWQiOiJhZ2VudHJhbmstMjAyNi0xIiwiamt1IjoiaHR0cHM6Ly9hZ2VudHJhbmsuaW5mby8ud2VsbC1rbm93bi9qd2tzLmpzb24ifQ","signature":"x8iB9o2wPZRdW3nE7om3UqexDUp3POKIYUtS3WRvdgCDNOH6p18KNMyFfvy55VxppgIMsKz1F-Ub5u1yyKpmMA"}],"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.","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"protocolVersion":"0.3.0","documentationUrl":"https://agentrank.info/whitepaper","defaultInputModes":["text/plain"],"defaultOutputModes":["text/plain","application/json"],"preferredTransport":"JSONRPC"},"signature_status":"verified","signature_detail":"Card signature matches a key served by the card host","signature_key_url":"https://agentrank.info/.well-known/jwks.json","signature_checked_at":"2026-10-07T08:55:15.054211+00:00","source_name":"A2A Registry","source_url":"https://a2aregistry.org/api/agents","last_check":{"checked_at":"2026-10-07T08:55:15.054211+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"skills":[{"skill_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"]},{"skill_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"]},{"skill_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"]}]}