{
  "schema_version": "agent-card/1",
  "name": "x402 Rail Audit",
  "description": "Paid x402 payment-rail audit on Base. One call probes the facilitators that can settle x402 payments right now (liveness, latency, advertised kinds) plus Base RPC reachability, and returns one verdict: usable, no_facilitator_available or chain_unreachable.",
  "url": "https://railaudit.x402api.workers.dev",
  "version": "1.0.0",
  "kind": "x402-paid-api",
  "protocol": "x402",
  "protocol_version": 2,
  "network": "eip155:8453",
  "asset": {
    "symbol": "USDC",
    "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
  },
  "price_usdc": 0.01,
  "payTo": "0xc9d0ab76b5e9cbe3da320347ccdaa111e515e6d0",
  "capabilities": [
    "x402-rail-liveness"
  ],
  "routes": [
    {
      "path": "/audit",
      "method": "GET",
      "description": "Use this before paying an x402 seller: returns whether any x402 facilitator is alive (name, status, latency, advertised kinds), whether Base RPC answers, the current block, and a verdict of usable, no_facilitator_available or chain_unreachable.",
      "price_usdc": 0.01,
      "paid": true,
      "payment": {
        "protocol": "x402",
        "version": 2,
        "scheme": "exact",
        "network": "eip155:8453",
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "payTo": "0xc9d0ab76b5e9cbe3da320347ccdaa111e515e6d0",
        "header": "X-PAYMENT",
        "maxTimeoutSeconds": 60,
        "extra": {
          "name": "USD Coin",
          "version": "2"
        }
      }
    }
  ],
  "free_routes": [
    {
      "path": "/health",
      "method": "GET",
      "description": "Liveness and catalogued state: payTo, price, network.",
      "paid": false
    },
    {
      "path": "/free",
      "method": "GET",
      "description": "The same audit result, unpaid, as a preview.",
      "paid": false
    }
  ],
  "discovery": {
    "manifest": "https://railaudit.x402api.workers.dev/.well-known/x402",
    "openapi": "https://railaudit.x402api.workers.dev/openapi.json",
    "llms": "https://railaudit.x402api.workers.dev/llms.txt",
    "agents": "https://railaudit.x402api.workers.dev/agents.json"
  }
}