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

# Webhooks

> Configure where Contra POSTs session status transitions. Multiple destinations supported.

<Note>API reference for Contra Intelligence v1. See the [API overview](/api-reference/overview) for shared concepts (auth, errors, idempotency).</Note>

## Authentication

Send your API key in the `x-api-key` header on every request.

```bash theme={null}
curl https://identity.contra.id/v1/... \
  -H "x-api-key: $CONTRA_KEY"
```

## Need help?

* [Quickstart](/quickstart) · [Concepts](/concepts/architecture) · [SDKs](/integrate/sdks)