{
  "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.",
  "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": "Given an agent wallet (0x...) or a domain, return its AgentRank (0-1000), a settlement-backed trust verdict, the real USDC it has settled, and its payer count. 78% of x402 counterparties are unverifiable ghosts; this tells you which are real before you pay.",
      "tags": ["reputation", "trust", "x402", "verification", "counterparty", "sybil-resistance", "settlement"],
      "examples": [
        "verify blockrun.ai",
        "is 0xe9030014f5dae217d0a152f02a043567b16c1abf safe to pay?",
        "what is the AgentRank of stableenrich.dev"
      ]
    },
    {
      "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?"]
    },
    {
      "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"]
    }
  ]
}