Supabase is Lovable's native backend — it powers every Lovable Cloud project under the hood. To connect a self-managed Supabase project, go to Settings → Connectors → Supabase, paste your Project URL and anon key, and tell Lovable what to build. The AI auto-generates your database schema, Row Level Security policies, authentication flows, and real-time subscriptions from plain English prompts. No manual wiring required.
Supabase is Lovable's native backend — and the deepest AI-assisted integration available
Of all the backends you can use with Lovable, Supabase is the only one where the AI truly understands every layer. Lovable Cloud — the default hosting environment for every new project — is built directly on Supabase's open-source stack. This means PostgreSQL, Auth, Storage, Edge Functions, and real-time subscriptions are available from day one with zero setup. When you describe what you want to build in plain English, Lovable's AI generates your database schema, creates the right tables and relationships, writes Row Level Security policies to protect your data, and scaffolds authentication flows — all automatically.
The integration goes deeper than any other backend option. When Supabase is connected, Lovable can read your existing schema, generate migrations, deploy Edge Functions, manage secrets, and produce frontend code that wires everything together correctly. For comparison: Firebase, MongoDB, and other databases are explicitly listed as 'not natively supported' in Lovable's documentation — they require manual Edge Function wiring and lose all AI-assisted schema management. Supabase is the one database where 'describe it and build it' actually works end to end.
The security model underpinning this integration is the blue zone / red zone split. Your Supabase anon (publishable) key lives in the browser and is safe to expose — it can only perform operations that your RLS policies allow. Your Supabase service role (secret) key lives exclusively in Edge Functions via Cloud → Secrets, never in client-side code. Lovable enforces this separation automatically and blocks approximately 1,200 hardcoded API keys per day from making it into application code. Understanding this split is the key to building secure, production-ready apps on Lovable.
Integration method
Supabase is Lovable's default and deepest backend integration — Lovable Cloud runs on Supabase's open-source stack, and Lovable's AI agent generates database schemas, RLS policies, auth flows, and Edge Functions from natural language prompts without any manual configuration.
Prerequisites
- A Lovable account (free tier works for initial setup)
- A Supabase account at supabase.com — free tier supports 2 projects and 500 MB storage
- Your Supabase Project URL and anon key (found in your Supabase dashboard under Settings → API)
- A Lovable project created and open in the editor
- Basic understanding of what a database table is (rows and columns — no SQL knowledge required)
Step-by-step guide
Understand whether to use Lovable Cloud or connect your own Supabase project
Understand whether to use Lovable Cloud or connect your own Supabase project
Before connecting anything, it helps to understand what you already have. Every Lovable project automatically includes a fully managed Supabase backend through Lovable Cloud — you do not need to create a separate Supabase account or do anything to get a database, auth system, or file storage. This built-in backend is active by default and handles all schema management, authentication, and storage out of the box. The reason you might connect a self-managed Supabase project instead is if you need direct access to your database via the Supabase Dashboard (Lovable Cloud's database is not visible in the standard Supabase Dashboard), if you want to share a database with other apps or services outside of Lovable, if you need to manage your own backups and data residency, or if you are migrating an existing application that already has a Supabase project. To check which option you are using: in your Lovable editor, click the plus (+) button at the top of the left panel to open the panel selector, then click 'Cloud'. If you see a Database section with tables listed, you are already using the Lovable Cloud built-in Supabase backend. If you plan to use the built-in backend, you can skip straight to Step 3 and start building — no connector setup required. If you want to connect your own Supabase project, continue to Step 2.
What database and backend does my Lovable project use by default? I want to understand if I need to connect my own Supabase project or if one is already included.
Paste this in Lovable chat
Expected result: You understand whether your project already has a built-in Supabase backend via Lovable Cloud, or whether you need to connect a self-managed Supabase project via the connector.
Connect your Supabase project via Settings → Connectors
Connect your Supabase project via Settings → Connectors
If you are connecting a self-managed Supabase project, the process takes about 3 minutes. Start by opening your Supabase project dashboard at supabase.com/dashboard. In the left sidebar, click 'Settings', then click 'API'. You will see two important values: your Project URL (looks like https://abcdefghijkl.supabase.co) and your Project API Keys section showing the 'anon public' key. Copy both of these — you will need them in Lovable. Back in Lovable, click the gear icon in the top-right corner to open your project Settings. In the left sidebar of the settings panel, click 'Connectors'. Scroll down until you see the 'Supabase' connector card, then click 'Connect'. A form will appear asking for your Project URL and your anon (public) key. Paste both values into their respective fields and click 'Save'. Once connected, you will see a green 'Connected' indicator on the Supabase connector card. Lovable's AI agent now has context about your Supabase project — it can read your existing table schema, understand your current RLS policies, and generate code that correctly targets your specific project. Important: only paste your anon (public) key here, never your service role (secret) key. The service role key should only ever be stored in Cloud → Secrets for use inside Edge Functions.
I've connected my Supabase project. My Project URL is [YOUR_URL]. What tables exist in my database right now, and what features can you build using my Supabase setup?
Paste this in Lovable chat
Expected result: The Supabase connector shows 'Connected' in Settings → Connectors, and Lovable's AI can describe your existing database structure or confirm it is empty and ready for schema generation.
Generate your database schema from a plain English description
Generate your database schema from a plain English description
This is where Lovable's Supabase integration truly stands apart from every other backend option. Instead of writing SQL or using Supabase's Table Editor manually, you describe your data model in plain English and Lovable generates the complete schema, including tables, columns, relationships, indexes, and Row Level Security policies. The key to getting a good schema is describing your app's users, what they own, and how things relate. A prompt like 'I'm building a project management app where users can create projects, add tasks to each project, and invite team members' gives Lovable enough context to generate a users table, projects table, tasks table, and a project_members junction table with appropriate foreign keys and RLS policies. After sending your prompt, watch the right-side preview panel. Lovable will show you the SQL it is running and confirm when tables are created. You can also verify the results by opening the Cloud tab (click + in the top panel bar, then Cloud) and expanding the Database section — your new tables will appear there with their column definitions. If the schema is not quite right, just ask Lovable to adjust it: 'Add a priority field to the tasks table with values low, medium, and high' works exactly as you would expect.
Create a Supabase database schema for a task management app. Users should be able to create projects, add tasks to projects with a title, description, due date, and status (todo, in progress, done), and invite other users to collaborate on projects. Set up appropriate Row Level Security so users can only see their own projects and tasks, plus projects they've been invited to.
Paste this in Lovable chat
Expected result: Lovable creates the database tables in your Supabase project, confirms each table was created successfully, and shows the RLS policies it applied. You can verify in the Cloud tab → Database section or in your Supabase dashboard under Table Editor.
Add authentication with a single prompt
Add authentication with a single prompt
Supabase Auth is the only natively integrated authentication system in Lovable, and setting it up requires nothing more than a natural language prompt. Lovable supports email/password registration, magic link (passwordless) login, and social OAuth providers including Google, GitHub, Apple, and Facebook — all configurable through chat. When you ask Lovable to add authentication, it generates complete auth flows: a registration page with email and password fields, a login page, a 'forgot password' flow, session management that persists across page refreshes, and automatic RLS policy updates that tie data ownership to authenticated user IDs. The frontend code uses Supabase's JavaScript client library with the correct hooks for session state, and protected routes redirect unauthenticated users to the login page. For social OAuth (Google login, for example), Lovable will tell you what redirect URLs to add in your Supabase dashboard under Authentication → Providers → Google. You will need a Google OAuth client ID and secret from console.cloud.google.com, which you add to Supabase's dashboard directly — not to Lovable's Secrets panel, since Supabase manages OAuth provider credentials internally. After configuring the provider in Supabase and telling Lovable the setup is complete, it will update the frontend to show the Google login button.
Add user authentication to my app using Supabase Auth. I want email/password registration and login, a forgot password flow that sends a reset email, and a protected dashboard page that only authenticated users can access. Redirect unauthenticated users to the login page automatically.
Paste this in Lovable chat
Expected result: Your app has fully functional registration, login, and password reset pages. The dashboard route is protected and redirects to login if no session exists. You can test registration and login in the Lovable preview (note: OAuth social login requires testing on the deployed URL, not the preview).
Enable real-time subscriptions and file storage
Enable real-time subscriptions and file storage
Two of Supabase's most powerful features — real-time data subscriptions and file storage — are available through Lovable prompts with no manual configuration. Real-time subscriptions let your app update instantly when database data changes, without users needing to refresh the page. This is ideal for chat applications, collaborative tools, live dashboards, and notification systems. Lovable generates the correct Supabase Realtime channel subscription code, handles cleanup when components unmount, and integrates the live data stream with React's state management. File storage through Supabase Storage supports files up to 2 GB per file. Lovable generates upload forms, progress indicators, secure download URLs, and bucket management code. An important default to be aware of: Lovable Cloud's storage buckets are set to publicly accessible by default. If your app handles sensitive files — user profile photos are usually fine, but medical documents, financial records, or private attachments are not — ask Lovable explicitly to configure the bucket as private and generate signed URLs for file access. This ensures only authenticated users with the right permissions can download files. For complex storage or real-time configurations — such as presence features showing which users are online, broadcast channels for collaborative editing, or fine-grained storage policies for multi-tenant apps — RapidDev's team can help configure these advanced patterns correctly.
Add real-time updates to my tasks list so it automatically refreshes when any team member adds or changes a task, without page reloads. Also add a file attachment feature to tasks where users can upload files up to 50 MB. Make the storage bucket private so only authorized users can download attachments.
Paste this in Lovable chat
Expected result: The tasks list updates in real-time across all open browser tabs when data changes. Users can attach files to tasks and see upload progress. File downloads require authentication. You can verify real-time is working by opening two browser windows and making a change in one — the other should update within a second.
Common use cases
Generate your database schema from a plain English description
Use Supabase with Lovable to generate your database schema from a plain english description. This is one of the most common use cases when integrating Supabase into your Lovable application.
What database and backend does my Lovable project use by default? I want to understand if I need to connect my own Supabase project or if one is already included.
Copy this prompt to try it in Lovable
Add authentication with a single prompt
Take your Supabase integration further by add authentication with a single prompt. This builds on the basic setup to create a more complete experience.
I've connected my Supabase project. My Project URL is [YOUR_URL]. What tables exist in my database right now, and what features can you build using my Supabase setup?
Copy this prompt to try it in Lovable
Enable real-time subscriptions and file storage
Prepare your Supabase integration for production by enable real-time subscriptions and file storage. Ensures your integration works reliably for real users.
Create a Supabase database schema for a task management app. Users should be able to create projects, add tasks to projects with a title, description, due date, and status (todo, in progress, done), and invite other users to collaborate on projects. Set up appropriate Row Level Security so users can only see their own projects and tasks, plus projects they've been invited to.
Copy this prompt to try it in Lovable
Troubleshooting
Database operations return 'new row violates row-level security policy' or data simply does not appear
Cause: Row Level Security is enabled on the table but no policy exists that allows the current user to perform the operation. This commonly happens when a table is created but the RLS policy is missing, or the policy references auth.uid() but the user is not authenticated.
Solution: In your Lovable chat, describe the exact operation that is failing: 'Users are getting a row-level security error when trying to create a new task. Fix the RLS policies on the tasks table so authenticated users can insert their own tasks and read tasks from projects they belong to.' Lovable will inspect the current policies and generate the corrected SQL. You can also check current policies by opening Cloud → Database → [table name] → RLS Policies in the Lovable Cloud tab.
Authentication works in preview but OAuth login (Google, GitHub) fails with a redirect error
Cause: OAuth providers require exact redirect URL registration. The Lovable preview URL and your deployed app URL are different domains, and most OAuth providers reject redirects to URLs not in their approved list. The preview URL also runs inside an iframe, which some providers block entirely.
Solution: OAuth social login must be tested on your deployed URL, not the Lovable preview. Click the Publish icon (top-right in the Lovable editor) to deploy your app, then copy the published URL. In your Supabase dashboard, go to Authentication → URL Configuration and add your deployed URL to the Site URL and Redirect URLs fields. For Google OAuth, also add the deployed URL to your Google Cloud Console OAuth client's authorized redirect URIs. After updating both, test login on the deployed URL directly.
Edge Functions return 'Secret [NAME] not found' or the function throws an environment variable error
Cause: The secret name in your Edge Function code (inside Deno.env.get('SECRET_NAME')) does not exactly match the name stored in Cloud → Secrets. This is case-sensitive — 'SUPABASE_SERVICE_KEY' and 'supabase_service_key' are different secrets.
Solution: Click the + button in the Lovable top panel, select Cloud, then click Secrets. Verify that the exact secret name shown there matches what the Edge Function code expects. Secret names are case-sensitive. If the secret is missing entirely, add it by clicking 'Add Secret' and entering the exact name and value. After saving, Lovable automatically redeploys the affected Edge Functions — no manual redeploy is needed.
Best practices
- Always review auto-generated RLS policies before publishing to production — Lovable creates sensible defaults, but policies for complex multi-tenant apps may need adjustments. Ask Lovable to explain each policy in plain English so you understand what is and is not protected.
- Never store your Supabase service role (secret) key in the Lovable connector settings or paste it in the chat. The service role key bypasses all RLS policies. It belongs only in Cloud → Secrets for use inside Edge Functions.
- Configure private storage buckets explicitly for any user-uploaded content that should not be publicly accessible. The default bucket configuration in Lovable Cloud is public. Ask Lovable to generate signed URL access for sensitive files.
- Use Lovable's Plan Mode to investigate database issues before making changes. Describing 'Why are users seeing each other's private data?' in Plan Mode lets the AI analyze your RLS policies and explain the problem without burning credits on failed fix attempts.
- Test authentication flows on your deployed URL, not the Lovable preview iframe, especially for OAuth social login. The preview is useful for UI iteration but is not a reliable test environment for auth redirect flows.
- When you need to add a column or change a table structure, describe the change conversationally: 'Add an is_archived boolean column to the projects table, defaulting to false.' Lovable handles the migration. Avoid making manual changes in the Supabase Table Editor at the same time — it can cause schema drift that confuses the AI.
- For real-time subscriptions, always ask Lovable to include cleanup code (unsubscribing when the component unmounts). Without cleanup, stale subscriptions accumulate and cause memory leaks and unexpected behavior in long-running sessions.
- Keep your Supabase project in the same geographic region as your target users. The hosting region for a Lovable Cloud project is set at creation and cannot be changed afterward — choose the region closest to your users when creating the project.
Alternatives
Google's Firestore and Authentication platform — works with Lovable but requires manual Edge Function setup since it is not natively integrated, losing AI-assisted schema generation and RLS management.
Document database with flexible JSON schemas — connect via Edge Functions and Cloud Secrets, suitable if your team already uses MongoDB or needs unstructured document storage.
Self-hosted PostgreSQL gives full infrastructure control and is the same database engine Supabase runs on, but requires manual connection pooling, auth, and Edge Function wiring that Supabase handles automatically.
Frequently asked questions
Do I need a separate Supabase account to use Lovable?
No. Every Lovable project automatically includes a full Supabase backend through Lovable Cloud — database, auth, storage, and Edge Functions are all included with no setup required. You only need a separate Supabase account if you want to manage your own database directly, share data with apps outside of Lovable, or need your database visible in the standard Supabase Dashboard. Lovable Cloud's managed database is not accessible through supabase.com — it is hosted and managed entirely within Lovable.
Is it safe to put my Supabase anon key in the Lovable connector settings? It is visible in my app's code.
Yes, the anon (public) key is designed to be exposed in client-side code. By itself, it does not grant access to your data — it only allows operations that your Row Level Security policies explicitly permit. Think of it as the address of your database, not the password. Your service role (secret) key is the one that bypasses RLS and must never appear in client-side code or the Lovable connector settings. Lovable enforces this separation automatically and blocks approximately 1,200 hardcoded secret keys from application code every day.
Can Lovable's AI generate the database schema for me, or do I need to design it first?
Lovable can generate your entire schema from a plain English description of your app. You do not need to design tables, columns, or relationships in advance. Describing your app's users, what they own, and how things relate is enough — for example, 'a recipe app where users save recipes, organize them into collections, and rate recipes from other users.' Lovable will create the tables, foreign key relationships, indexes, and RLS policies. You can then refine by asking for adjustments in follow-up prompts.
What is the storage limit for files in Lovable with Supabase Storage?
Individual files can be up to 2 GB each. Total storage on the free tier of Lovable Cloud is limited by the underlying Supabase Free tier (500 MB total storage). Paid Lovable plans include more storage, and overages are billed through Lovable Cloud's usage-based pricing. If you connect your own Supabase project instead of using Lovable Cloud, your storage limits follow your Supabase plan — Pro is 100 GB.
How do I use Supabase real-time features in Lovable?
Ask Lovable in plain English: describe what data should update automatically and when. For example, 'Make the messages list update in real-time so new messages appear instantly without refreshing the page.' Lovable generates the Supabase Realtime channel subscription, wires it to React state, and includes cleanup code to unsubscribe when the component unmounts. Real-time works for any table with the Realtime feature enabled in Supabase — Lovable enables it on the relevant tables automatically.
What happens to my data if I stop using Lovable?
If you are using Lovable Cloud's built-in Supabase backend, your data is hosted on Lovable's infrastructure and is not directly accessible via the Supabase Dashboard. You can export your data at any time through Lovable's export features or by writing a query through the Lovable Cloud tab. If you connected your own self-managed Supabase project, your data remains entirely in your Supabase account regardless of your Lovable subscription status — you retain full ownership and access.
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