Agent Intel Whale Transaction Monitor
by SiteCheck Agent Intel & Dev in Onchain & crypto
Large transfers on Ethereum in the latest 1 to 10 blocks (default 5, about one minute of chain time): native ETH transfers valued at the current ETH price, and USDT and USDC token transfers, each at least a USD threshold (default $100,000), with asset, amount, USD value, hash, block, sender and recipient. Ethereum only; other tokens are not included; a snapshot, not a live stream.
https://api.fadeandco.workers.dev/api/agent-intel/whale-transaction-monitor- Price
- $0.003
- per call in USDC
- Uptime
- 0.0%
- last 30 days
- Response time
- -
- no timed checks yet
- Last check
- Failed
- 4 h ago, next any minute now
Reliability
Latest check failed 4 h ago: Amount "0.003" is not in atomic token units
Status and outage history · Atom feed · Watch with other listings
How to call it
GET https://api.fadeandco.workers.dev/api/agent-intel/whale-transaction-monitor
Each call costs $0.003 in USDC on Optimism, paid with the request over x402.
Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.
Example request
From the listing.
GET https://api.fadeandco.workers.dev/api/agent-intel/whale-transaction-monitor?blocks=5&minUsd=50000Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
assets | string | No | Comma list of eth, usdt, usdc (default all three) |
blocks | string | No | Latest blocks to scan, 1 to 10 (default 5) |
minUsd | string | No | Minimum USD value, 1000 to 100000000 (default 100000) |
Example response
The provider's example. We can't check it without paying.
Example response, 42 lines
{
"assets": [
"eth",
"usdt"
],
"blocks": {
"from": 26254459,
"to": 26254463
},
"checkedAt": "2026-10-23T09:35:19.401Z",
"count": 41,
"ethPriceUsd": 2392.83,
"minUsd": 50000,
"note": "Native ETH: every transaction of the scanned blocks. Tokens: USDT and USDC Transfer events only (USD value = token amount).",
"scanned": {
"tokenTransfers": 903,
"transactions": 1247
},
"source": "https://ethereum-rpc.publicnode.com",
"transfers": [
{
"amount": 1388040.137367,
"asset": "USDT",
"block": 26254462,
"from": "0x1601843c5e9bc251a3272907010afa41fa18347e",
"hash": "0x0b65413b580443ed01f0021da71b06b9e11dd259f5432f1523f53b75e84d02db",
"timestamp": "2026-10-23T09:34:59.000Z",
"to": "0xe2e7a17dff93280dec073c995595155283e3c372",
"valueUsd": 1388040
},
{
"amount": 1200000,
"asset": "USDC",
"block": 26254459,
"from": "0x2744dfd9898f0babbc570cc594bbbc84b487a22b",
"hash": "0xb174b05c4f7f6b1de4e59b99b4494631fd4a290486dfc5327c5aeae35ff42c0c",
"timestamp": "2026-10-23T09:34:23.000Z",
"to": "0x2df9b935c44057ac240634c7536511d8aa03028d",
"valueUsd": 1200000
}
]
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.
The code pays $0.003 in USDC on Base instead: the x402 libraries don't pay USDC by default.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.fadeandco.workers.dev/api/agent-intel/whale-transaction-monitor?blocks=5&minUsd=50000'
# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.fadeandco.workers.dev/api/agent-intel/whale-transaction-monitor?blocks=5&minUsd=50000' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
// Pays at most $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.fadeandco.workers.dev%2Fapi%2Fagent-intel%2Fwhale-transaction-monitor
const res = await pay("https://api.fadeandco.workers.dev/api/agent-intel/whale-transaction-monitor?blocks=5&minUsd=50000");
console.log(res.status, await res.text());Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client
# Pays at most $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.get("https://api.fadeandco.workers.dev/api/agent-intel/whale-transaction-monitor?blocks=5&minUsd=50000")
print(res.status_code, res.text)Security scan
No findings
We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 4 h ago | Amount "0.003" is not in atomic token units | 402 | 115 ms | $0.003 |
| 12 h ago | Amount "0.003" is not in atomic token units | 402 | 128 ms | $0.003 |
| 21 h ago | Amount "0.003" is not in atomic token units | 402 | 707 ms | $0.003 |
| 29 h ago | Amount "0.003" is not in atomic token units | 402 | 882 ms | $0.003 |
| 37 h ago | Amount "0.003" is not in atomic token units | 402 | 123 ms | $0.003 |
Show 10 older checks
| 45 h ago | Timed out | - | - | - |
| 2 days ago | Amount "0.003" is not in atomic token units | 402 | 1.1 s | $0.003 |
| 3 days ago | Amount "0.003" is not in atomic token units | 402 | 1.0 s | $0.003 |
| 3 days ago | Amount "0.003" is not in atomic token units | 402 | 886 ms | $0.003 |
| 3 days ago | Amount "0.003" is not in atomic token units | 402 | 813 ms | $0.003 |
| 3 days ago | Amount "0.003" is not in atomic token units | 402 | 433 ms | $0.003 |
| 4 days ago | Amount "0.003" is not in atomic token units | 402 | 109 ms | $0.003 |
| 4 days ago | Amount "0.003" is not in atomic token units | 402 | 797 ms | $0.003 |
| 4 days ago | Amount "0.003" is not in atomic token units | 402 | 555 ms | $0.003 |
| 5 days ago | Amount "0.003" is not in atomic token units | 402 | 973 ms | $0.003 |