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.
Bastien Labelle
Full stack dev w/ 20+ years of experience
Daniel Vázquez
Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting.
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.
Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
Cursor ambassador and agentic tooling builder.
I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti.
I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks.
https://blog.vtemian.com/
zipking
I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify.
As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value.
Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
My expertise lies in the critical backend infrastructure: the parts that must be fast, secure, and scalable. I thrive on high-pressure environments, such as when I had only three weeks to architect and launch an Ethereum redemption system with minimal prior crypto knowledge, turning it into a major revenue stream.
What I bring to your project:
Forensic Debugging: I don't just "patch" bugs; I use tools like Datadog and Explain Analyzers to map out bottlenecks and resolve root causes—like significantly reducing memory usage by optimizing complex DB joins.
Full-Stack Context: Deep experience in Node.js and React, ensuring backends play perfectly with mobile and web teams.
Sanity in the Age of AI: I bridge the gap between "best practices" and modern speed, ensuring your project isn't just built fast, but built to last.
Mehdi Ben Haddou
- Founder of Chessigma (1M+ users) & many small projects
- ex Founding Engineer @Uplane (YC F25)
- ex Software Engineer @Amazon and @Booking.com
BurnHavoc
Been around fixing other peoples code for 20 years.
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
prajwalfullstack
Hi Im a full stack developer, a vibe coded MVP to Market ready product, I'm here to help
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.