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Fatorly provides an interactive API reference for the Integration API, powered by Scalar. It lets you browse every endpoint and run live “Try it” calls. The reference is built into the platform and is available only to signed-in users.

Open the interactive API Reference

Browse endpoints and make live calls in Scalar, inside the Fatorly platform. Opens in a new tab.
You must be signed in to your Fatorly account to open the API Reference. If you’re not signed in, you’ll be redirected to the login page first.

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How to authenticate & try a call

Every request to the Integration API requires an API key sent in the X-Api-Key header.
1

Generate an API key

In the platform, go to Settings → Integrations → API Keys and create a key. The key looks like fat_… and is shown only once at creation — copy it immediately. See API Keys for details.
2

Add your key in Scalar

On the API Reference page, open Scalar’s Authentication panel and paste your key into the X-Api-Key field.
3

Try a call

Choose an endpoint and select Try it to call the live Integration API. Every request sends your key in the X-Api-Key header.
Treat your API key like a password. If it’s lost or compromised, revoke it under Settings → Integrations → API Keys and create a new one.