# From flow to API

> Any Blokera automation can be published as an API, always behind an access key.

![Network cables plugged into the ports of a switch.](https://blokera.io/images/cables-1600.webp)

- Date: 2026-10-19
- Language: en
- URL: https://blokera.io/en/blog/de-flujo-a-api

An automation is more useful when other systems can call it. In Blokera, **any flow can be published as an API**.

## The API node

Publishing is configured in the Canvas **API node**, among the triggers. There you decide how it responds: immediately or when it finishes, whether it validates the input, whether it accepts files and whether it notifies through a webhook.

## Keys are mandatory

There is no published API without a key. You create and revoke keys; a key is shown only once, when created. Without a key, or with a revoked one, the API rejects the call.

## Versions and usage

You choose which version of the flow answers and can roll back to an earlier one. You also see how many calls the API receives and how many fail.

## How to call it

Every published API shows its URL, its inputs and outputs, and an example ready to copy. Full developer documentation is under construction.