Lovable
security
API Keys Exposed in Lovable Frontend Code
Your Lovable app has API keys, database credentials, or other secrets visible in the browser's source code or network requests. Anyone who views your site can see these keys and potentially abuse them.
This is one of the most critical security issues in AI-generated apps. Lovable may place API keys directly in your frontend JavaScript, making them accessible to anyone who opens browser developer tools. Attackers can use these keys to access your database, send emails on your behalf, or rack up charges on your payment processor.
You might discover this when you receive an unexpectedly high bill from a service, when your database is tampered with, or when a security-conscious user reports the exposure.
Error Messages You Might See
Unauthorized: Invalid API key
403 Forbidden - Access denied
Your API key was found in a public repository
Billing alert: Unusual usage detected
Common Causes
- Keys in environment variables loaded client-side — Lovable may use VITE_ or NEXT_PUBLIC_ prefixed environment variables that get bundled into the frontend code
- Direct API calls from the browser — Instead of routing through a backend, the app calls third-party APIs directly from JavaScript with the key embedded
- Hardcoded credentials in source files — API keys placed directly in .ts or .js files rather than environment variables
- Supabase anon key confusion — Misunderstanding which Supabase keys are safe to expose (anon key) vs which must stay secret (service_role key)
- No server-side proxy — The app architecture doesn't include a backend to securely handle API calls
How to Fix It
- Audit your source code — Open browser DevTools (F12), go to Sources tab, and search for keywords like 'key', 'secret', 'password', 'token' in your JavaScript bundles
- Move sensitive keys to the backend — Create server-side API routes (Supabase Edge Functions or a backend service) that hold your secrets and proxy requests
- Rotate compromised keys immediately — If keys were exposed in production, generate new ones in each service's dashboard and revoke the old ones
- Use Row Level Security — If using Supabase, configure RLS policies so even if the anon key is exposed, users can only access their own data
- Check your Git history — Even if you remove keys from code now, they may still be in previous commits. Consider the keys compromised if they were ever committed
Real developers can help you.
Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Dor Yaloz
SW engineer with 6+ years of experience,
I worked with React/Node/Python
did projects with React+Capacitor.js for ios
Supabase expert
Franck Plazanet
I am a Strategic Engineering Leader with over 8 years of experience building high-availability enterprise systems and scaling high-performing technical teams. My focus is on bridging the gap between complex technology and business growth.
Core Expertise:
🚀 Leadership: Managing and coaching teams of 15+ engineers, fostering a culture of accountability and continuous improvement.
🏗️ Architecture: Enterprise Core Systems, Multi-system Integration (ERP/API/ETL), and Core Database Structure.
☁️ Cloud & Scale: AWS Expert; architected systems handling 10B+ monthly requests and managing 100k+ SKUs.
📈 Business Impact: Aligning tech strategy with P&L goals to drive $70k+ in monthly recurring revenue.
I thrive on "out-of-the-box" thinking to solve complex technical bottlenecks and am always looking for ways to use automation to improve business productivity.
Antriksh Narang
5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies.
Kingsley Omage
Fullstack software engineer passionate about AI Agents, blockchain, LLMs.
AUXLE
I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies.
Stanislav Prigodich
15+ years building iOS and web apps at startups and enterprise companies. I want to use that experience to help builders ship real products - when something breaks, I'm here to fix it.
Matthew Jordan
I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job.
Taufan
I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms.
Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact.
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
Is the Supabase anon key safe to expose?
The Supabase anon key is designed to be public, but only when combined with proper Row Level Security (RLS) policies. Without RLS, anyone with the anon key can read and write all your data.
How do I know if my keys have been abused?
Check the usage dashboards for each service (Stripe, SendGrid, etc.). Look for unusual spikes in API calls, unexpected charges, or data you didn't create.