Large on-chain transaction monitor — whale movements on Base, Ethereum, and Robinhood Chai

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x52Ab53912D37759B2ad364f22dD06B16714b6C06",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "3nmeVj5m9Uq2hSTfsVsn3tJMHRJQNMKR1AjzyUJbrSgw",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "chain": "base",
          "hours": 1,
          "limit": 20,
          "min_usd": 100000,
          "type": "all"
        },
        "type": "http"
      },
      "output": {
        "example": "{\"chain\":\"Base\",\"count\":8,\"transactions\":[{\"symbol\":\"USDC\",\"usd_value\":\"$2.1M\",\"from_label\":\"Coinbase\",\"to\":\"0x...\",\"timestamp\":\"2026-06-03T11:00:00Z\"}]}",
        "format": "json",
        "type": "object"
      }
    },
    "schema": {
      "category": "data",
      "description": "Real-time large on-chain transaction monitoring for Base, Ethereum, and Robinhood Chain. Tracks token transfers and native ETH moves above your USD threshold. Named wallet labels, explorer links, and AI pattern analysis.",
      "name": "WhaleAlert — Large Transaction Monitor",
      "properties": {
        "input": {
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "chain": {
                  "default": "base",
                  "description": "base, eth, or robinhood",
                  "title": "Chain",
                  "type": "string"
                },
                "hours": {
                  "default": 1,
                  "description": "Lookback hours (1-24)",
                  "title": "Hours",
                  "type": "integer"
                },
                "limit": {
                  "default": 20,
                  "description": "Max results",
                  "title": "Limit",
                  "type": "integer"
                },
                "min_usd": {
                  "default": 100000,
                  "description": "Minimum USD value",
                  "title": "Min Usd",
                  "type": "number"
                },
                "type": {
                  "default": "all",
                  "description": "token | native | all",
                  "title": "Type",
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {},
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "tags": [
        "whale",
        "on-chain",
        "transactions",
        "base",
        "ethereum",
        "robinhood",
        "smart-money"
      ],
      "type": "object",
      "version": "1.0.0"
    }
  },
  "bc_kg64bd18": {}
}

curl "https://whale.lonestaroracle.xyz/whales"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://whale.lonestaroracle.xyz/whales");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://whale.lonestaroracle.xyz/whales")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header