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Intelligence Whale Activity

by Whale activity in a token in Onchain & crypto

x402 APIPassing, checked 17 min ago

Whale activity in a token ($0.01): the largest wallets buying and selling any ERC-20 in the last hour on Base, Ethereum, Arbitrum, Optimism or Polygon, net USD per wallet, buys and sells, smart-money labels, bot flags and smart-money net flow. Use to see whether whales accumulate or dump.

GET
https://api.marketintelligenceapi.com/api/v1/intelligence/whale-activity/:address
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
207 ms
285 ms slowest 5%
Last check
Passed
17 min ago, next in 13 min

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://api.marketintelligenceapi.com/api/v1/intelligence/whale-activity/:address

Each call costs $0.01 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

Built from the input schema. Replace the values with your own.

GET https://api.marketintelligenceapi.com/api/v1/intelligence/whale-activity/:address?chain=base&limit=10

Parameters

ParameterTypeRequiredDescription
chainstringNoChain of the token: base, ethereum, arbitrum, optimism or polygon (token-risk also takes solana). Not the payment network Default: "base".
limitintegerNoMaximum number of results to return Default: 10.

Example response

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

Example response, 26 lines
{
  "chain": "base",
  "summary": {
    "flowVerdict": "ACCUMULATION",
    "netBuyers": 102,
    "netSellers": 85,
    "smartMoneyNetUsd": 18420.5,
    "top10BuyersSharePercent": 41.3,
    "uniqueWallets": 187,
    "volumeUsd": 412390.2
  },
  "token": "0x940181a94a35a4569e4529a3cdfb74e38fd98631",
  "topBuyers": [
    {
      "automated": false,
      "boughtUsd": 18420.5,
      "buys": 3,
      "label": "SMART_MONEY",
      "netUsd": 18420.5,
      "sells": 0,
      "soldUsd": 0,
      "wallet": "0x3f5c...9a1e"
    }
  ],
  "topSellers": []
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.marketintelligenceapi.com/api/v1/intelligence/whale-activity/:address?chain=base&limit=10'

# 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.marketintelligenceapi.com/api/v1/intelligence/whale-activity/:address?chain=base&limit=10' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.marketintelligenceapi.com%2Fapi%2Fv1%2Fintelligence%2Fwhale-activity%2F%3Aaddress
const res = await pay("https://api.marketintelligenceapi.com/api/v1/intelligence/whale-activity/:address?chain=base&limit=10");
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
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.marketintelligenceapi.com/api/v1/intelligence/whale-activity/:address?chain=base&limit=10")
    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
17 min agoPassed402221 ms$0.01
5 h agoPassed402258 ms$0.01
10 h agoPassed402155 ms$0.01
14 h agoPassed402234 ms$0.01
19 h agoPassed402208 ms$0.01
Show 10 older checks
23 h agoPassed402206 ms$0.01
28 h agoPassed402285 ms$0.01
32 h agoPassed402265 ms$0.01
36 h agoPassed402184 ms$0.01
40 h agoPassed402219 ms$0.01
45 h agoPassed402168 ms$0.01
2 days agoPassed402157 ms$0.01
2 days agoPassed402246 ms$0.01
2 days agoPassed402207 ms$0.01
3 days agoPassed402224 ms$0.01

History

16 Oct 2026Price on Base changed from 9000 units of 0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42 to 8900 units of 0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42; Price on eip155:480 changed from 9000 units of 0x1C60ba0A0eD1019e8Eb035E6daF4155A5cE2380B to 8900 units of 0x1C60ba0A0eD1019e8Eb035E6daF4155A5cE2380B