Set Up Atlas — Car Rental Management SaaS

Hostinger hosting

Atlas's code is free; hosting is a paid plan. Your live website runs here.

Choose a Hostinger Plan

Use the Unlimited plan or a Cloud plan with Web App deployment.

Claude Desktop

Your AI assistant for the setup. Claude does the technical work in its Code tab.

Download Claude Desktop

https://claude.ai/download

Node.js

Version 20.19 or newer. Claude handles the rest.

Download Node.js

https://nodejs.org/en/download

Git

Used to publish your copy of Atlas. Claude runs the Git commands for you.

Download Git

https://git-scm.com/

Supabase account

The free plan is enough to start. You'll create a new project when Claude asks for it.

Create Supabase Account

https://supabase.com/dashboard

GitHub account

Free. It holds your own private copy of Atlas, which Hostinger deploys from.

Create GitHub Account

https://github.com/signup

Download Atlas

Atlas is free and open source under the MIT License.

Open Atlas on GitHub

https://github.com/salhiworks/atlas-car-rental-saas

Click Code, then Download ZIP Unzip the downloaded file Keep the atlas-car-rental-saas-main folder somewhere easy to find, such as Documents

Already use Git? You can clone the repository instead. Claude's setup works with either.

Open Atlas in Claude Desktop

Claude Desktop Code Local Select Project Folder Open Trust Workspace

Choose the Atlas folder itself — the one with README.md inside.

Ask Claude to Set Up Atlas

In the Code tab, with the Atlas folder open, send this message:

Atlas Setup Prompt

Starts Atlas's built-in setup. Claude does the technical work for you.

Set up Atlas for me.

Claude follows Atlas's built-in setup skill. It checks your computer, installs what Atlas needs, and does the technical work itself. It stops only when it needs you, and each of those moments is a task in this guide.

Create Your Supabase Project

Claude asks for this first. Atlas always goes into a new, empty project.

Open Supabase Dashboard

https://supabase.com/dashboard

Click New project — the Free plan is fine Name it and save the database password somewhere safe When it's ready, copy its Project ID and paste it into Claude

Supabase Project Settings General

If Claude asks you to sign in to Supabase or connect your project, follow the exact instructions it gives you.

Approve the Install

Claude shows your project's name, region and creation date and asks to install Atlas into it. Check it's the project you just created, then reply yes. That one yes covers the rest:

Creates the Atlas database (54 migrations, previewed first)

Deploys and verifies Atlas's 4 Edge Functions

Configures the app with your publishable key only

Runs Atlas's automated build and checks

It takes a few minutes, and there's nothing for you to open or test. If the project isn't empty, Claude stops and changes nothing.

Create an Empty Private Repository

This is your own copy of Atlas on GitHub. Hostinger deploys your website from it.

Create GitHub Repository

https://github.com/new

Name the repository Choose Private Leave README, .gitignore and license turned off Click Create repository Copy the repository URL

Approve the Publish

Paste the repository URL into Claude when it asks. Claude prepares Git, checks that no secrets are included, and shows a short summary: your repository and the main branch. Check the repository is yours, then reply yes.

Claude never pushes to the original Atlas repository. If Git asks you to sign in, Claude asks you to run the push yourself — sign in through the browser, because GitHub doesn't accept your account password there.

Import Your Repository

No hosting yet? Get a plan in Requirements first.

Hostinger Websites Add Website Web App Import Git Repository

Connect GitHub and choose Only select repositories Select your Atlas repository and the main branch Choose the free temporary domain or your own domain

Set the Build and Deploy

Keep the Vite framework preset Hostinger detects Choose Node.js 22, or the newest version offered Set the build command to npm run build Set the output directory to dist

Add exactly these two environment variables. Claude shows you both values, and you can ignore any other suggestions:

VITE_SUPABASE_URL VITE_SUPABASE_PUBLISHABLE_KEY

VITE_SUPABASE_URL

Project URL

VITE_SUPABASE_PUBLISHABLE_KEY

Publishable key

Get these values from Supabase

Open Connect

https://supabase.com/dashboard/project/_?showConnect=true

Security

Only the Publishable key goes here. Never add a Secret or service_role key to a VITE_ variable — anything starting with VITE_ is visible in the browser.

Click Deploy and wait for the build to finish Copy your website's address and paste it into Claude

Claude checks that the live website loads over HTTPS and is connected to your Supabase project.

Add Your Live Address to Supabase

Sign-up and password emails link to these addresses. Claude sends the exact Site URL and four Redirect URLs for your Hostinger domain — copy them from Claude's message.

Supabase Authentication URL Configuration

Set the Site URL to your live address, starting with https:// Add the four Redirect URLs, one at a time Click Save, then tell Claude it's done

Each Redirect URL is your live address followed by one of these paths:

/auth/callback

/accept-invite

/auth/reset-password

/confirm-email

Create Your Agency

Open the sign-up link Claude gives you — your live address followed by /sign-up Create your agency with the same email as your Supabase account Open the confirmation email in the same browser Sign in, then tell Claude when the dashboard shows your agency

Why the same email: Supabase's built-in email only reaches your Supabase team's addresses, about two messages an hour. Claude then confirms your agency exists with you as its Owner — there's nothing for you to test.

Atlas is live. Every push to the main branch now redeploys it on Hostinger, so ask Claude for any change, including your own name, logo or colors, then ask it to push.

Before real customers

Connect your own email provider (Custom SMTP) before customers or staff outside your Supabase team sign up:

Supabase Authentication Emails SMTP Settings