How do you secure API keys in Next.js?
Keep provider credentials out of browser code with a protected server-side request flow.
Read guide →Secure AI Architecture
Stop Leaking Your API Keys. Start Scaling Safely.
Deploy a production-ready AI infrastructure in 5 minutes, not 5 days. A hardened Next.js foundation—now powered by your choice of Firebase or Supabase—built for high-growth startups.
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secure-config.ts
1import { Lerser } from '@lerser/secure';23const secureStack = Lerser.init({4 apiKey: process.env.LERSER_KEY,5 rateLimit: {6 windowMs: 60 * 1000,7 max: 1008 },9 monitoring: true10});1112export default secureStack;Why most AI apps fail (security-wise)
Most developers ship fast and secure later. But in AI, a single exposed API key or missing rate limit means bankruptcy before you even scale.
🔑
API Key Exposure
Leaking OpenAI or Anthropic keys in the client-side is a death sentence. Bots will drain your credits in seconds.
⚡
Lack of Rate Limiting
Without endpoint protection, a single malicious user (or a bug) can generate thousands of paid API calls on your dime.
📄
Firebase Misconfiguration
Open-access database rules expose your users' private data to anyone who knows your project URL.
💀
Development Hell
Wasting weeks configuring auth, webhooks, and encryption instead of building features that users actually love.
Product overview
What is LERSER Secure?
LERSER Secure is a production-ready Next.js starter kit for developers building AI applications that need secure API key handling, authentication, rate limiting, and a scalable backend foundation. Instead of exposing OpenAI, Anthropic, Gemini, or other provider credentials in browser code, the starter kit keeps sensitive requests on protected server-side routes. Developers can choose a Firebase edition with Firebase Authentication and Firestore Security Rules or a Supabase edition with SSR Authentication, PostgreSQL, and Row Level Security. Both editions include bot protection, reusable UI components, and lifetime updates. LERSER Secure is delivered as source code, runs inside the buyer's own infrastructure, and does not access or store the buyer's AI API keys. Each edition is available as a one-time purchase with a listed base price of $67.99 before applicable taxes and platform fees.
Source-backed answers
Secure AI Development Guides
Practical answers for the security decisions developers face before launching an AI application.
Firebase or Supabase for an AI app?
Compare Security Rules and Row Level Security before choosing your backend.
Read guide →How do you rate limit an AI API?
Protect paid endpoints using authentication, shared counters, and controlled limits.
Read guide →Stop wasting time on Boilerplate
Stop spending your first 20 hours wrestling with auth, RLS, and rate limits. Start building the features your users actually pay for.
Feature
Building Manually (10+ hours)
LERSER Stack (5 mins)
API Key Management
Hardcoded or messy .env files
Secure Server-side proxying
Rate Limiting
Hoping nobody abuses your API
Pre-configured Redis/Firebase limits
Authentication
Basic & vulnerable
Firebase Auth + Protected Routes
Production Ready
Debugging in production
Battle-tested Design System
Cost
Potential for infinite leaks
Fixed $67.99 investment
API Key Management
Hardcoded or messy .env files
Secure Server-side proxying
Rate Limiting
Hoping nobody abuses your API
Pre-configured Redis/Firebase limits
Authentication
Basic & vulnerable
Firebase Auth + Protected Routes
Production Ready
Debugging in production
Battle-tested Design System
Cost
Potential for infinite leaks
Fixed $67.99 investment
The Production-Ready Foundation
Stop guessing how to secure your app. Get the exact infrastructure we use to protect and scale production AI portals.
Next.js (App Router)
Optimized for extreme performance and SEO out of the box.
Firebase Security Rules
Granular protection for Firestore and Storage endpoints.
API Edge Routes
Ultra-fast execution with built-in bot protection.
Clean Architecture
Modular code that's easy to extend as your business grows.
SECURE_CORE
2026 Roadmap
Our vision for the ultimate secure AI infrastructure.
NOW
Firebase Edition
The battle-tested foundation. Auth, Firestore, and client-side SDKs securely integrated with Next.js.
NEW
Supabase Edition
Hardened security. PostgreSQL, Row Level Security, and SSR Authentication natively built for performance.
NEXT
Stripe & Analytics
Native monetization workflows and privacy-first analytics directly integrated into the core stack.
Choose Your Stack
Both editions include the full production-ready template. Pick the backend that fits your team.
Firebase
$67.99 / lifetime
The classic stack. Perfect for rapid prototyping and teams already embedded in the Google ecosystem.
Next.js App Router Setup
Firebase Authentication
Firestore Security Rules
Rate Limiting & Bot Protection
Beautiful UI/UX Components
Lifetime Updates
Security Hardened
Supabase
$67.99 / lifetime
The new standard. Built for scale with PostgreSQL, strict Row Level Security, and SSR-first Auth.
Next.js App Router Setup
Supabase SSR Authentication
PostgreSQL Row Level Security (RLS)
Rate Limiting & Bot Protection
Beautiful UI/UX Components
Lifetime Updates
Build like a Senior Dev. Scale like a Startup.
Security isn't a feature, it's a prerequisite.
Pick your backend, plug in your keys, and launch with confidence today.
SELECT YOUR STACK
Limited lifetime licenses available at $67.99
Price may vary based on local taxes and platform fees. For the best price, complete your purchase via browser on a desktop/laptop instead of the Whop mobile app.