{"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, not gameable feedback. Use at the 'verify reputation' step. Free and read-only.","url":"https://api.agentrank.info/a2a","preferredTransport":"JSONRPC","version":"0.1.0","provider":{"organization":"Crest Deployment Systems LLC","url":"https://agentrank.info"},"documentationUrl":"https://agentrank.info/whitepaper","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"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, a verdict, USDC settled, and payer count.","tags":["reputation","trust","x402","verification","counterparty","sybil-resistance"],"examples":["verify blockrun.ai","is 0xe9030014f5dae217d0a152f02a043567b16c1abf safe to pay?"]},{"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.","tags":["gating","access-control","requireRank"],"examples":["should I serve caller 0x... with min score 500?"]},{"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"],"examples":["top x402 agents"]}]}