{
  "service": "pool watch",
  "what": "Continuous depth monitoring of one BSC pool for 30 days, with a callback when depth falls below a threshold you set.",
  "price": "0.50 USD1 by direct transfer, or the same amount in USDC through the x402 facilitator — either lands in the same wallet",
  "buy": "POST this same URL with {\"token\":\"0x…\",\"pair\":\"0x…\",\"depthBelowUsd\":1000,\"callback\":\"https://…\"}",
  "how": "Send 0.50 USD1 to 0x690E950214980BC329823A2DB2fD90C06Bd54dE4 on BNB Smart Chain, then repeat this request with header PAYMENT-SIGNATURE: <transaction hash>.",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:56",
      "asset": "0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d",
      "maxAmountRequired": "500000000000000000",
      "payTo": "0x690E950214980BC329823A2DB2fD90C06Bd54dE4",
      "resource": "https://agent.brainonbnb.com/watch",
      "description": "Pool watch for 30 days",
      "mimeType": "application/json",
      "maxTimeoutSeconds": 120,
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "decimals": 18,
        "assetTransferMethod": "permit2",
        "feePayer": "facilitator"
      }
    },
    {
      "scheme": "exact",
      "network": "eip155:56",
      "asset": "0x8d0d000ee44948fc98c9b98a4fa4921476f08b0d",
      "maxAmountRequired": "500000000000000000",
      "payTo": "0x690E950214980BC329823A2DB2fD90C06Bd54dE4",
      "resource": "https://agent.brainonbnb.com/watch",
      "description": "Pool watch for 30 days — direct transfer, then send the transaction hash in PAYMENT-SIGNATURE",
      "extra": {
        "name": "World Liberty Financial USD",
        "version": "1",
        "decimals": 18,
        "assetTransferMethod": "direct-transfer"
      }
    }
  ],
  "read_back": "GET /watch/<id> — returned to you when the purchase settles",
  "free_alternative": "https://brainonbnb.com/api/pool-scan?address=0x… — one reading, no payment, no watching",
  "catalogue": "https://agent.brainonbnb.com/.well-known/x402"
}