ToolVet
77trust / 100

Base Token Info

by 1gateway in Onchain & crypto

x402 APIPassing, checked 3 h ago

Use when an agent needs an ERC-20's basics on Base before quoting, transferring or approving it. Input: address (token contract); optional holder (adds balance and share of supply) and spender (adds allowance, flags unlimited approvals). Output: JSON block+time, name, symbol, decimals, totalSupply raw and decimal, known issuer if curated. Name/symbol are self-reported. EOA or non-ERC-20: 4xx, not charged. Example: ?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

GET
https://1gateway.dev/v1/onchain/base/token-info
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
694 ms
1.0 s 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://1gateway.dev/v1/onchain/base/token-info

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://1gateway.dev/v1/onchain/base/token-info?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&holder=0x6246eee0355Dd7A93C888fE59e1151388A0cC5a1&spender=0x000000000022D473030F116dDEE9F6B43aC78BA3

Parameters

ParameterTypeRequiredDescription
addressstringYesERC-20 token contract on Base mainnet (0x + 40 hex; mixed case must be a valid EIP-55 checksum). EOA → 400, non-ERC-20 contract → 422 (not charged)
holderstringNoOptional address whose token balance and share of total supply to include
spenderstringNoOptional spender; with holder, adds allowance(holder, spender). Needs holder.

Example response

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

Example response, 28 lines
{
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "allowance": null,
  "block": {
    "number": 52515382,
    "timestamp": "2026-10-12T15:48:31.000Z"
  },
  "chain": "base",
  "chainId": 8453,
  "codeSize": 1852,
  "decimals": 6,
  "holder": null,
  "knownIssuer": {
    "issuer": "Circle",
    "note": "Circle-issued stablecoin; the issuer can mint, blacklist, pause and upgrade it (centralized control, expected for this asset)"
  },
  "name": "USD Coin",
  "note": "Token metadata is whatever the contract reports (name and symbol are not verified and can imitate another token). For risk signals use /v1/onchain/base/token-r…",
  "rpc": {
    "kind": "public",
    "source": "base-rpc.publicnode.com"
  },
  "symbol": "USDC",
  "totalSupply": {
    "amount": 4445795059.965714,
    "raw": "4445795059965714"
  }
}

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://1gateway.dev/v1/onchain/base/token-info?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&holder=0x6246eee0355Dd7A93C888fE59e1151388A0cC5a1&spender=0x000000000022D473030F116dDEE9F6B43aC78BA3'

# 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://1gateway.dev/v1/onchain/base/token-info?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&holder=0x6246eee0355Dd7A93C888fE59e1151388A0cC5a1&spender=0x000000000022D473030F116dDEE9F6B43aC78BA3' \
  | 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%2F1gateway.dev%2Fv1%2Fonchain%2Fbase%2Ftoken-info
const res = await pay("https://1gateway.dev/v1/onchain/base/token-info?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&holder=0x6246eee0355Dd7A93C888fE59e1151388A0cC5a1&spender=0x000000000022D473030F116dDEE9F6B43aC78BA3");
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://1gateway.dev/v1/onchain/base/token-info?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&holder=0x6246eee0355Dd7A93C888fE59e1151388A0cC5a1&spender=0x000000000022D473030F116dDEE9F6B43aC78BA3")
    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 agoPassed402695 ms$0.002
8 h agoPassed402904 ms$0.002
13 h agoPassed402752 ms$0.002
17 h agoPassed402675 ms$0.002
22 h agoPassed402647 ms$0.002
Show 3 older checks
26 h agoPassed402217 ms$0.002
30 h agoPassed4021.0 s$0.002
34 h agoPassed402694 ms$0.002