ToolVet
74trust / 100

Base Token Brief

by heb-utils-x402.hebutils-api.workers.dev in Onchain & crypto

x402 APIPassing, checked 54 min ago

One call for a Base token: symbol, name, decimals, total supply, optional holder balance, admin-control risk screen (proxy, owner, mint, pause, blacklist, fee setters) with headline and signal count, and the current block number. Pass the token contract address and optionally a holder address. Replaces 4-5 separate lookups with one payment. Read-only live on-chain data, heuristic screen, not an audit, not advice.

GET
https://heb-utils-x402.hebutils-api.workers.dev/base-token-brief
Price
$0.01
per call in USDC
Uptime
96.7%
last 30 days
Response time
486 ms
819 ms slowest 5%
Last check
Passed
54 min 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://heb-utils-x402.hebutils-api.workers.dev/base-token-brief

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

From the listing.

GET https://heb-utils-x402.hebutils-api.workers.dev/base-token-brief?holder=0x1CD76fe5f38Ae5B2785962EE5a3799e846E9fA52&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Parameters

ParameterTypeRequiredDescription
holderstringNoOptional holder address 0x...
tokenstringYesERC-20 token contract 0x...

Example response

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

{
  "block_number": 12345678,
  "chain": "base",
  "decimals": 6,
  "headline": "Many admin-control signals found",
  "holder_balance": "1.5",
  "is_proxy": true,
  "name": "USD Coin",
  "signal_count": 4,
  "symbol": "USDC",
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "total_supply": "3500000000",
  "verdict": "many_control_signals"
}

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://heb-utils-x402.hebutils-api.workers.dev/base-token-brief?holder=0x1CD76fe5f38Ae5B2785962EE5a3799e846E9fA52&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'

# 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://heb-utils-x402.hebutils-api.workers.dev/base-token-brief?holder=0x1CD76fe5f38Ae5B2785962EE5a3799e846E9fA52&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913' \
  | 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%2Fheb-utils-x402.hebutils-api.workers.dev%2Fbase-token-brief
const res = await pay("https://heb-utils-x402.hebutils-api.workers.dev/base-token-brief?holder=0x1CD76fe5f38Ae5B2785962EE5a3799e846E9fA52&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913");
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://heb-utils-x402.hebutils-api.workers.dev/base-token-brief?holder=0x1CD76fe5f38Ae5B2785962EE5a3799e846E9fA52&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913")
    print(res.status_code, res.text)

Security scan

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