Heinrichstech · CDP Webhook SIG Verify
$0.0001
per call · USD Coin on Base
BitBooth Webhook Signature Verify: pay 0.001 USDC, verify a webhook signature against the provider's canonical HMAC scheme. Supports stripe, github, vercel, cdp, slack, and generic HMAC-SHA256. Constant-time compare, clock-skew tolerance on timestamp-bearing providers (Stripe / Slack / CDP). Stateless — caller supplies their secret in the request body, we never store it.
Endpoint
POST https://app.heinrichstech.com/v1/cdp/webhook-sig-verify2
Calls / 30d
2
Unique payers / 30d
Sep 7
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://app.heinrichstech.com/v1/cdp/webhook-sig-verify", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"payload": "{\"id\":\"evt_test\",\"type\":\"checkout.session.completed\"}",
"provider": "stripe",
"secret": "whsec_test_secret",
"signature": "t=1640000000,v1=abc...",
"timestamp": "1640000000",
"toleranceSeconds": 300
}),
});
const data = await res.json();curl -X POST \
"https://app.heinrichstech.com/v1/cdp/webhook-sig-verify" \
-H "Content-Type: application/json" \
-d '{"payload":"{\"id\":\"evt_test\",\"type\":\"checkout.session.completed\"}","provider":"stripe","secret":"whsec_test_secret","signature":"t=1640000000,v1=abc...","timestamp":"1640000000","toleranceSeconds":300}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"details": {
"ageSeconds": 14,
"checkedTolerance": true
},
"ok": true,
"payment": {
"network": "eip155:8453",
"payer": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
"transaction": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
},
"provider": "stripe",
"scheme": "hmac-sha256-stripe",
"valid": true
}Payment details
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