---
title: "User Authentication with Magic Links"
description: "How can you authenticate users in web sites (or web apps) built with LaunchFast starter kits via Magic Links?"
source: "https://www.launchfa.st/documentation/authentication/magic-links"
---

> **Site index for agents**
> Fetch https://www.launchfa.st/llms.txt to discover every page on this site.
> Every page is also available as Markdown by appending `.md` to its URL.

> Browse the source code [here](https://github.com/LaunchFast-Boilerplates/launchfa.st-astro/blob/master/auth.config.ts).

import { Tabs, TabItem, Steps } from '@astrojs/starlight/components'

LaunchFa.st makes it easier for you to authenticate users with Magic Links with it's built-in integration.

To set up authentication with Magic Links in LaunchFast:

<Steps>
  1. Complete the [launch checklist](/documentation/guides/launch/).
  2. Redirect your users to `/signin` page.
  3. and you're done!
</Steps>