Sentinel Contract Safety

Upgradeable contract and proxy admin check for any EVM contract on Base (POST wrapper, body: {contract}). Reads EIP-1967 implementation, admin and beacon slots directly from chain state. Returns whether the contract can be upgraded, who controls the upgrade, and an upgrade risk verdict. Call when an agent needs to know if a contract owner can silently change its logic. $0.02 USDC

Open endpoint ↗

Price per call: $0.02
Chain: eip155
Method: POST
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("http://www.0816.cn/v1/base/proxy-upgrade", { method: "POST" });
console.log(await res.json());

http://www.0816.cn/v1/base/proxy-upgrade