## Authorization Header

To gain access to our API, you need an [Authorization header](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Authorization) with a valid Bearer token. The token is your [API key](https://docs.certn.co/api/certn-api-v-1.0/guides/use-the-api#create-an-api-key).

- Replace `<token>` with your API key in the following header:

```
{ 'Authorization': 'Bearer <token>' }
```

Include this header in every call to our API, and keep it secure. It is your access key.