ToolVet
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B20 Token Info

by B20 token info in Onchain & crypto

x402 APIPassing, checked 2 h ago

ERC-20 metadata plus B20 signals for any Base address: name, symbol, decimals, total supply, best-effort paused/cap, bytecode size, and whether the address carries the factory-issued 0xB200 prefix. Works on plain ERC-20s too (isB20 comes back false).

GET https://agent402.tools/api/b20-token-info

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
186 ms typical, 188 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://agent402.tools/api/b20-token-info?address=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fb20-token-info
const res = await pay("https://agent402.tools/api/b20-token-info?address=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913");
console.log(await res.json());

Example input

{
  "address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
}

Example output

{
  "address": "0x8335…2913",
  "decimals": 6,
  "isB20": false,
  "name": "USD Coin",
  "prefixMatch": false,
  "symbol": "USDC",
  "totalSupply": "…",
  "totalSupplyFormatted": "…"
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402188 ms$0.005
5 h agoPassed402359 ms$0.005
8 h agoPassed402186 ms$0.005
13 h agoPassed402185 ms$0.005