vm5-openapi-x402.onrender.com

Offline read-only decode of canonical public unsigned ERC-20 transfer/approve/transferFrom/increaseAllowance/decreaseAllowance calldata, including unlimited-allowance and zero-address flags. Strict parser rejects bad input BEFORE an x402 payment. Payment directly to original one-owner VM1 MetaMask on Base; does not interact with chain, a signing wallet, or a token contract. Not a security certific

Open endpoint ↗

Price per call: $0.01
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://vm5-openapi-x402.onrender.com/v1/erc20-calldata-preflight", { method: "GET" });
console.log(await res.json());

https://vm5-openapi-x402.onrender.com/v1/erc20-calldata-preflight