> ## Documentation Index
> Fetch the complete documentation index at: https://docs.centryos.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Webhook Authentication

> Webhook requests are signed with sha512 hash from the body and secret key.

To ensure security and verify that webhook requests genuinely come from our servers, each webhook request is signed using a `SHA-512` HMAC hash.

### How it works

1. **Secret Key**: You are provided with a unique secret key when configuring your webhook.
2. **Payload Hashing**: We compute a SHA-512 HMAC of the raw request body using your secret key.
3. **Signature Header**: The resulting hash is included in the request headers under the `signature` field.

### Example Header

```http theme={null}
signature: 21fa4b457c...<truncated hash>...8c3e19d
```