ToolVet
77trust / 100

Chain Address

by HubVibe in Onchain & crypto

x402 APIPassing, checked 2 h ago

Base wallet lookup / address balance: ETH balance, transaction count (nonce) and whether the address is a smart contract or an ordinary wallet (EOA), live from Base mainnet in one call. Use it to check a counterparty, deposit address or contract before paying it. Input: address (0x...). For token balances or any other read use chain.rpc.

POST https://hubvibe-io.com/work/chain/address

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
390 ms typical, 682 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

POST https://hubvibe-io.com/work/chain/address

Each call costs $0.05 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.

POST https://hubvibe-io.com/work/chain/address
content-type: application/json

{
  "address": "0x837C40E2B4e976f43Ffb4451eE281A00fA9477dd"
}

Parameters

ParameterTypeRequiredDescription
addressstringYes
languagestringNo

Example response

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

Example response, 31 lines
{
  "price_usd": 0.05,
  "provenance": {
    "attempts": 1,
    "elapsed_ms": 660,
    "providers_used": [
      "base_rpc"
    ],
    "steps": [
      {
        "ms": 640,
        "ok": true,
        "provider": "base_rpc",
        "step": "address"
      }
    ]
  },
  "receipt_id": "rcpt_9f1c2b3a4d5e6f70",
  "receipt_url": "/work/receipts/rcpt_9f1c2b3a4d5e6f70",
  "result": {
    "address": "0x837C40E2B4e976f43Ffb4451eE281A00fA9477dd",
    "balance_eth": 1.25,
    "balance_wei": "1250000000000000000",
    "code_size_bytes": 0,
    "is_contract": false,
    "network": "base-mainnet",
    "transaction_count": 42
  },
  "status": "ok",
  "worker": "chain.address"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.05.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://hubvibe-io.com/work/chain/address' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"0x837C40E2B4e976f43Ffb4451eE281A00fA9477dd"}'

# 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 - -X POST 'https://hubvibe-io.com/work/chain/address' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"0x837C40E2B4e976f43Ffb4451eE281A00fA9477dd"}' \
  | 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 $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
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 $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fhubvibe-io.com%2Fwork%2Fchain%2Faddress&method=POST
const res = await pay("https://hubvibe-io.com/work/chain/address", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "address": "0x837C40E2B4e976f43Ffb4451eE281A00fA9477dd"
  }),
});
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 $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://hubvibe-io.com/work/chain/address",
        json={
            "address": "0x837C40E2B4e976f43Ffb4451eE281A00fA9477dd",
        },
    )
    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 agoPassed402476 ms$0.05
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