Saylor Innovations Guide Library

Verify webhook HMAC-SHA256 signatures - raw body not re-serialized JSON, timestamp tolerance, compare_digest and timingSafeEqual

Open endpoint ↗

Price per call: $0.01
Chain: Solana
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://saylorinnovations.com/api/kb/webhook-signature-verification-hmac-sha256-timing-safe", { method: "GET" });
console.log(await res.json());

https://saylorinnovations.com/api/kb/webhook-signature-verification-hmac-sha256-timing-safe