API Documentation
Introduction
Guide to start using AutoCaption API
API available starting from the Expert Plan
How to get your API Key
On the Application: AutoCaption, top right Profile > Usage & API
![](https://mintlify.s3-us-west-1.amazonaws.com/autocaption-28/images/api_key.png)
Authentication
All API endpoints are protected. You must use header authentication
x-api-key: your_secret_key