How to authenticated with the Etainabl API
Authentication is done via an API key which must be requested via Etainabl support. Once you have an API key, simply add an x-api-key header to all your requests.
An example request to the /invoices endpoint may look like the following:
curl --location --request GET 'https://api.etainabl.com/2.0/invoices' \
--header 'x-api-key: 123:abcde-12345-12345-abcde-abcde' \
--header 'Content-Type: application/json'