ToolVet
80trust / 100

Btc Address

by SiteCheck in Onchain & crypto

x402 APIPassing, checked 3 h ago

A Bitcoin mainnet address: confirmed and unconfirmed balance in BTC and USD, transaction count, funded and spent totals, and its last 10 transactions with the net change for the address. Mainnet bech32 and legacy addresses only. Source: mempool.space. Information only, not financial advice.

GET
https://api.sitecheck-api.workers.dev/api/btc/address
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
57 ms
175 ms slowest 5%
Last check
Passed
3 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 · Watch with other listings

How to call it

GET https://api.sitecheck-api.workers.dev/api/btc/address

Each call costs $0.002 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://api.sitecheck-api.workers.dev/api/btc/address?address=bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh

Parameters

ParameterTypeRequiredDescription
addressstringYesBitcoin mainnet address (bc1…, 1… or 3…)

Example response

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

Example response, 44 lines
{
  "address": "bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh",
  "balance": {
    "confirmed": {
      "btc": 3.92652888,
      "sats": 392652888,
      "usd": 327258.49
    },
    "unconfirmed": {
      "btc": 0,
      "sats": 0,
      "usd": 0
    }
  },
  "btcUsd": 83345.495,
  "checkedAt": "2026-10-14T07:00:19.888Z",
  "disclaimer": "Information only, not financial advice.",
  "recentTransactions": [
    {
      "confirmed": true,
      "netBtc": 0.00007093,
      "time": "2026-10-13T22:38:17.000Z",
      "txid": "69d90ee94f7a671dcf653749a5b36b6aa56f27ead6440950184e5efc1a9b4353"
    },
    {
      "confirmed": true,
      "netBtc": 0.0002,
      "time": "2026-10-13T13:21:16.000Z",
      "txid": "e9736079eb52ec7a7bbe517c06b773d4e48b48c1423bec94ce48817febb0f3cd"
    },
    {
      "confirmed": true,
      "netBtc": 0.00011038,
      "time": "2026-10-13T10:21:33.000Z",
      "txid": "c59a232a0077bf282fa0fc335ebeb1c3aa1ad5b48b32139832df6047f303ff0b"
    }
  ],
  "source": "https://mempool.space/api/address/bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh, https://mempool.space/api/address/bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh/txs",
  "totals": {
    "receivedBtc": 16.79658727,
    "sentBtc": 12.87005839,
    "txCount": 1143
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/btc/address?address=bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh'

# 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.sitecheck-api.workers.dev/api/btc/address?address=bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh' \
  | 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fbtc%2Faddress
const res = await pay("https://api.sitecheck-api.workers.dev/api/btc/address?address=bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh");
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
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.sitecheck-api.workers.dev/api/btc/address?address=bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh")
    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
3 h agoPassed40257 ms$0.002
7 h agoPassed40285 ms$0.002
11 h agoPassed40256 ms$0.002
15 h agoPassed40263 ms$0.002
20 h agoPassed40241 ms$0.002
Show 2 older checks
24 h agoPassed402175 ms$0.002
28 h agoPassed40247 ms$0.002