FastX402 Lab

Exact conversion between a token's decimal amount and its integer base units (wei, USDC atomic units...) for any decimals 0-36. No floating point. Use it before signing a transfer or reading a balance.

Open endpoint ↗

Price per call: $0.001
Chain: Base
Method: GET
Paid calls · 30 days: 0

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://lab.fastx402.tools/token-units", { method: "GET" });
console.log(await res.json());

https://lab.fastx402.tools/token-units