Offbyt - Automatic Backend Generation

Scan frontend → Auto-generate production backend in seconds

Offbyt detects your frontend API calls and generates an enterprise-grade Express.js + MongoDB backend with CRUD, authentication, validation, rate limiting, caching, and Socket.io—100% offline, no AI needed.

⚡ Quick Start

npm install -g offbyt
offbyt generate        # Generate backend (interactive setup)
cd backend && npm run dev   # Run backend on http://localhost:5000

🚀 Main Features

✅ Auto-Generated Backend - Express.js, NestJS, or Fastify
✅ Multiple Databases - MongoDB, PostgreSQL, MySQL, SQLite
✅ Complete CRUD APIs - Pagination, search, filtering, sorting
✅ Authentication - JWT, OAuth, or Session-based
✅ Security - Rate limiting, input validation, Helmet.js, CORS
✅ Performance - Compression, caching, database indexes
✅ Real-time Chat - Socket.io with messaging, typing indicators
✅ Frontend Integration - Auto-connect URLs, sync changes
✅ One-Command Deploy - Vercel/Netlify + Railway/Render
✅ Performance Testing - Load testing & optimization recommendations

📚 Commands

| Command | Purpose | |---------|---------| | offbyt generate | Generate backend (interactive setup) | | offbyt generate --quick | Generate with defaults | | offbyt compile | Auto-connect frontend & backend URLs | | offbyt sync | Update backend when frontend changes | | offbyt benchmark | Performance & scalability testing | | offbyt deploy --full | Deploy frontend + backend (Vercel + Railway) | | offbyt generate-api | Generate APIs from frontend state patterns | | offbyt doctor | System health check |

🎯 Generated Backend Structure

backend/
├── server.js              # Express entry point
├── package.json           # Dependencies
├── .env                   # Environment config
├── routes/                # API endpoints
├── models/                # Mongoose schemas
├── middleware/            # Error handling, logging, auth
├── controllers/           # Business logic
├── config/                # Database config
└── utils/                 # Utilities

⚙️ Environment Setup

MONGODB_URI=mongodb://localhost:27017/myapp
PORT=5000
NODE_ENV=development
CORS_ORIGIN=http://localhost:3000

🔄 Typical Workflow

# 1. Generate backend from frontend
offbyt generate

# 2. Start backend
cd backend && npm run dev

# 3. Connect frontend with backend
offbyt connect .

# 4. When frontend changes, sync backend
offbyt sync

# 5. Test performance before production
offbyt benchmark

# 6. Deploy
offbyt deploy --full

🛠️ Customization

Add Custom Routes

// backend/routes/custom.routes.js
import express from 'express';
const router = express.Router();

router.get('/custom', (req, res) => {
  res.json({ message: 'Custom route' });
});

export default router;

Then register in server.js:

import customRoutes from './routes/custom.routes.js';
app.use('/api', customRoutes);

🐛 Troubleshooting

MongoDB connection failed?

mongod  # Start MongoDB locally
# Or use MongoDB Atlas → update MONGODB_URI in .env

Port 5000 already in use?

# Change in .env
PORT=5001

Dependencies installation failed?

cd backend && npm install --legacy-peer-deps

📋 Requirements

• Node.js 18+
• npm 9+
• MongoDB (local or Atlas)

✨ Advanced Features

• Mongoose Hooks - Pre/post save, update, delete
• Soft Delete - Data recovery without hard delete
• Bulk Operations - Create/update/delete multiple records
• Virtual Fields - Computed properties
• Health Check Endpoint - /health
• Graceful Shutdown - Proper database disconnection

Built for developers who want to focus on building, not boilerplate.