ToolVet
77trust / 100

Whale Flow

by Whale Flow in Onchain & crypto

x402 APIPassing, checked 2 h ago

Flow, not snapshot: the largest transfers of a Base token in the last 24h, classified by whether whales are sending INTO DEX pools (sell pressure) or pulling OUT (accumulation) — a net sell-pressure read that decays in hours. Complements holder-forensics ('who could dump') with 'is anyone dumping now'. CDP-indexed events.

GET
https://402.com.tr/api/x402/whale-flow
Price
$0.04
per call in USDC
Uptime
100%
last 30 days
Response time
482 ms
720 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

GET https://402.com.tr/api/x402/whale-flow

Each call costs $0.04 in USDC on Base, 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://402.com.tr/api/x402/whale-flow?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&hours=24

Parameters

ParameterTypeRequiredDescription
addressstringYesToken contract address
hoursstringNoWindow in hours (default 24, max 72)

Example response

The provider's example. We can't check it without paying.

{
  "checkedAt": "2026-10-11T17:12:40.218Z",
  "largeTransfers": 25,
  "netToPools": "0",
  "poolsTracked": 21,
  "sellPressurePct": 0,
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "verdict": "balanced",
  "windowHours": 24
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.04.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://402.com.tr/api/x402/whale-flow?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&hours=24'

# 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://402.com.tr/api/x402/whale-flow?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&hours=24' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: 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 $0.04 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.04" });
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 $0.04 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Fwhale-flow
const res = await pay("https://402.com.tr/api/x402/whale-flow?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&hours=24");
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 $0.04 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.04"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://402.com.tr/api/x402/whale-flow?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&hours=24")
    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

WhenResultHTTPTimePrice
2 h agoPassed402495 ms$0.04
6 h agoPassed402490 ms$0.04
10 h agoPassed402493 ms$0.04
14 h agoPassed402482 ms$0.04
18 h agoPassed402496 ms$0.04
Show 10 older checks
22 h agoPassed402454 ms$0.04
26 h agoPassed402384 ms$0.04
30 h agoPassed402503 ms$0.04
33 h agoPassed402763 ms$0.04
37 h agoPassed402375 ms$0.04
40 h agoPassed402421 ms$0.04
44 h agoPassed402481 ms$0.04
47 h agoPassed402509 ms$0.04
2 days agoPassed402517 ms$0.04
2 days agoPassed402356 ms$0.04