---
source_url: "https://authkit.tech/?utm_source=openai"
title: AuthKit • Authentication as a Service
mirrored_at: 2026-08-22T01:00:59.287Z
host: authkit.tech
cited_in_42a: true
mirror_canonical: "https://index.42a.ai/authkit.tech/index__q__utm_source_openai"
---

> **Original source:** https://authkit.tech/?utm_source=openai

## User authentication, solved.

Add sign up, sign in, and user management to your app in minutes. One API, any language.

## Integrate in minutes

Create a registration flow for your users with a single API call. AuthKit handles the UI, validation, and storage.

```
curl -X POST https://api.authkit.tech/provide/register \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json"

# Response:
# {
#   "redirect_url": "https://authkit.tech/serve/register?id=tmp_abc123"
# }
#
# Redirect your user to the URL above.
# After sign-up, they return to your redirect URL.
```

## How it works

Step 1

### Create your organization

Sign up for AuthKit and create an organization. Each organization is an independent workspace for one of your apps.

Step 2

### Get your API key

Generate an API key for your organization. Use it to authenticate requests from your backend to the AuthKit API.

Step 3

### Redirect users to sign up

Call a single endpoint to get a registration URL. Redirect your users there — AuthKit handles the rest.

## Everything you need

### Multi-org support

Each of your apps gets its own organization with independent users, API keys, and settings.

### OAuth built in

Google sign-in works out of the box. No extra configuration needed for your users.

### Email verification

Automatic email confirmation flows keep spam out and ensure real users sign up.

### Open source

Fully open source and self-hostable. Inspect the code, contribute, or run it on your own infrastructure.