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

# Authentication

Proper uses [API keys](/apikeys) to authenticate requests. You can view and manage your API keys in the [Proper platform](https://app.helloproper.com).

Your API keys carry many privileges, so be sure to keep them secure! Do not share your secret API keys in publicly accessible areas such as GitHub, client-side code, and so forth.

All API requests must be made over HTTPS. Calls made over plain HTTP will fail. API requests without authentication will also fail.

<RequestExample>
  ```bash Authenticated request theme={null}
  curl --request GET \
    --url https://api.helloproper.com/bills \
    --header 'Authorization: your_secret_key
  ```
</RequestExample>