ToolVet
65trust / 100

Base Token

by Base Token Check by LIN Desk in Onchain & crypto

x402 APIPassing, checked 3 h ago

Use when an agent needs a quick ERC-20 contract check on Base before trading or accepting a token: name/symbol/decimals/total supply, owner and whether ownership is renounced, EIP-1967 / legacy proxy (upgradeable) detection, flags. $0.003 per call, USDC on Base (x402). Read-only; not security advice. Non-contract addresses and upstream errors are not charged.

GET
https://lin-desk-x402.lindesk.workers.dev/v1/base/token
Price
$0.003
per call in USDC
Uptime
57.1%
last 30 days
Response time
598 ms
893 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://lin-desk-x402.lindesk.workers.dev/v1/base/token

Each call costs $0.003 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://lin-desk-x402.lindesk.workers.dev/v1/base/token?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Parameters

ParameterTypeRequiredDescription
addressstringYesERC-20 contract address on Base mainnet

Example response

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

Example response, 27 lines
{
  "address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
  "as_of": 1791020283,
  "block_number": 52115468,
  "bytecode_bytes": 1852,
  "cached": false,
  "chain": "base",
  "chain_id": 8453,
  "decimals": 6,
  "erc20": true,
  "flags": [
    "upgradeable_proxy_zeppelinos",
    "has_owner"
  ],
  "is_contract": true,
  "name": "USD Coin",
  "owner": "0x3abd6f64a422225e61e435bae41db12096106df7",
  "ownership_renounced": false,
  "proxy": {
    "eip1967_admin": null,
    "eip1967_implementation": null,
    "zeppelinos_implementation": "0x2ce6311ddae708829bc0784c967b7d77d19fd779"
  },
  "symbol": "USDC",
  "total_supply": "4372296189.660356",
  "total_supply_raw": "4372296189660356"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://lin-desk-x402.lindesk.workers.dev/v1/base/token?address=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://lin-desk-x402.lindesk.workers.dev/v1/base/token?address=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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Flin-desk-x402.lindesk.workers.dev%2Fv1%2Fbase%2Ftoken
const res = await pay("https://lin-desk-x402.lindesk.workers.dev/v1/base/token?address=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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://lin-desk-x402.lindesk.workers.dev/v1/base/token?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913")
    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 agoPassed402590 ms$0.003
8 h agoExpected HTTP 402, got 502502194 ms-
13 h agoPassed402599 ms$0.003
18 h agoExpected HTTP 402, got 502502190 ms-
23 h agoExpected HTTP 402, got 502502183 ms-
Show 2 older checks
28 h agoPassed402893 ms$0.003
33 h agoPassed402598 ms$0.003