🧭 Overview

At PromptXL, our mission is simple — turn your ideas into live apps with AI precision.

Behind every app our users generate lies a powerful, secure, and scalable backend — Supabase.

We’ve built a seamless integration that automatically provisions Auth, Database, and Realtime APIs through the Supabase Management API, so every PromptXL project comes with its own production-ready backend.

In this post, we’ll walk through how our integration works, what APIs we use, and how you can build similar workflows.

⚙️ Why Supabase?

We evaluated multiple backend providers, and Supabase stood out because it’s:

  • 🧱 Full-stack ready — PostgreSQL, Auth, Realtime, Storage
  • 🔒 Secure by default — Row-Level Security (RLS) baked in
  • 💡 Developer-friendly — REST & JS SDKs
  • 🔁 API-driven — Perfect for automation and AI workflows

This made Supabase the perfect foundation for PromptXL’s AI app builder.

🧩 How the Integration Works

Every time a user builds an app on PromptXL, we:

  1. Create a Supabase Project dynamically via the Supabase Management API
  2. Apply Schema + RLS Policies generated from the user’s PRD (Product Requirements Document)
  3. Inject Environment Variables (VITE_SUPABASE_URL, VITE_SUPABASE_ANON_KEY) into Vercel
  4. Deploy the complete app with Supabase fully connected

No manual setup, no console clicks — everything is automated in seconds.

🛠️ Step-by-Step Integration Flow

1️⃣ Project Creation

We use the Supabase Management API to create a new project for each user:

POST https://api.supabase.com/v1/projects
Authorization: Bearer <SUPABASE_ACCESS_TOKEN>
Content-Type: application/json

Payload:

{
  "name": "my-ai-app",
  "organization_id": "<YOUR_ORG_ID>",
  "region": "ap-southeast-1",
  "plan": "free"
}

This returns the project’s API URL, anon key, and service role key.

2️⃣ Apply SQL Schema

Once the project is ready, PromptXL runs the AI-generated SQL schema:

POST https://api.supabase.com/v1/projects/{project_id}/sql
Authorization: Bearer <SUPABASE_ACCESS_TOKEN>
Content-Type: application/json

Payload:

{
  "query": "CREATE TABLE tasks (id uuid PRIMARY KEY, title text, user_id uuid REFERENCES auth.users(id));"
}

3️⃣ Add Row-Level Security (RLS)

Then we apply RLS policies:

ALTER TABLE tasks ENABLE ROW LEVEL SECURITY;

CREATE POLICY "Users can view own tasks" ON tasks
  FOR SELECT USING (auth.uid() = user_id);

4️⃣ Connect to Frontend

The generated React + Vite + Tailwind frontend includes:

import { createClient } from '@supabase/supabase-js';

const supabase = createClient(
  import.meta.env.VITE_SUPABASE_URL,
  import.meta.env.VITE_SUPABASE_ANON_KEY
);

PromptXL injects these variables automatically via the Vercel API before deployment.

🔄 Full Lifecycle Automation

Here’s the full flow visualized:

User → PromptXL → Claude AI → PRD & Schema
          ↓
   Supabase API → Create Project → Apply Schema + RLS
          ↓
   Vercel API → Add Env Vars → Deploy App
          ↓
       ✅ Live URL + Supabase backend ready

🧠 Key Benefits

✅ No Backend Setup: Every user gets a fresh Supabase project automatically.

✅ Secure by Default: RLS and Auth policies applied instantly.

✅ Scalable: Powered by PostgreSQL and Supabase APIs.

✅ Developer-Friendly: Users can expand with Supabase Studio or SQL.

🔗 References

✍️ About PromptXL

PromptXL is an AI-powered App Builder that transforms natural-language prompts into fully functional React + Supabase web apps.

Each project is production-ready, with Auth, CRUD, Realtime, and RLS built-in.

🔗 www.promptxl.com

📧 [email protected]

💬 Turning your ideas into live apps with AI precision.

💡 Pro Tip (for WordPress formatting)

In Gutenberg Editor:

  • Use Heading blocks for each section (## = H2)
  • Use Code blocks for JSON, Bash, SQL, JS
  • Use List blocks for bullet points
  • Use Quote block for callouts like “No manual setup”
  • Add a Featured Image (use Supabase + PromptXL logos side-by-side)

Would you like me to also generate a Canva hero image prompt (1280×720) for this blog post (e.g. “AI App Builder + Supabase Integration Workflow”) so you can upload as featured image?