Essentio Public API
The Essentio Public API lets your own software read a Business’s data in Essentio over HTTPS. Every request acts for exactly one Business — the one its API key belongs to — with the Role the key carries.
Getting started
An Owner or Admin of the Business creates an API key in Essentio under Settings → API Keys. Send it with every request to https://api.essentio.pro/v1, and read the answers as JSON. The contract is an OpenAPI 3.1 file: the API’s every response is tested against it, and within v1 it only grows — fields, endpoints and error types may be added, nothing is renamed or removed.