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app.heinrichstech.com cdp webhook-sig-verify
https://app.heinrichstech.com/v1/cdp/webhook-sig-verify
payable, partial
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.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
It advertises 8 ways to pay and only 6 of them are usable.- Price
- $0.001
- Network
- base
- Pay to
- 0xDa2F35d283c42dd60B965322394bc658a5c1769F
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 234 ms
- Payment options
- 6 usable of 8
- Last checked
- 2026-08-10T09:13:57.884Z (1d ago)
- Category
- identity
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapp.heinrichstech.com%2Fv1%2Fcdp%2Fwebhook-sig-verify"