To authenticate you need to add an Authorization header with the contents of the header being
Bearer sk_123456789 where
sk_123456789 is your API Key.
'Authorization': 'Bearer <API key>'
You can get a private API key by signing up for a free account.
When using your API key, be sure to store it in an environment variable, and avoid checking it into your source control.
Public API key
If you just want to try things out without signing up, you can use our public API key.
Note that any jobs you create with the public API key will be viewable and editable by anyone, so be sure not to use it for anything private or important.