backend/.env.example at main · Regen-Bazaar/backend · GitHub

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# Server Configuration
NODE_ENV=development
PORT=3000

# Database Configuration
MONGODB_URI=mongodb://localhost:27017/web3-backend

# JWT Configuration
JWT_SECRET=your-super-secret-jwt-key-here
JWT_EXPIRES_IN=30d

# Rate Limiting
RATE_LIMIT_WINDOW_MS=900000
RATE_LIMIT_MAX_REQUESTS=100

# CORS Configuration
ALLOWED_ORIGINS=http://localhost:3000,http://localhost:3001

# Blockchain RPC URLs
ETHEREUM_RPC_URL=https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID
POLYGON_RPC_URL=https://polygon-mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID
BSC_RPC_URL=https://bsc-dataseed.binance.org/

# Optional: For testnet development
# ETHEREUM_TESTNET_RPC_URL=https://goerli.infura.io/v3/YOUR_INFURA_PROJECT_ID
# POLYGON_TESTNET_RPC_URL=https://polygon-mumbai.infura.io/v3/YOUR_INFURA_PROJECT_ID
# BSC_TESTNET_RPC_URL=https://data-seed-prebsc-1-s1.binance.org:8545/

# API Keys (if needed)
# ETHERSCAN_API_KEY=your-etherscan-api-key
# POLYGONSCAN_API_KEY=your-polygonscan-api-key
# BSCSCAN_API_KEY=your-bscscan-api-key

# Email Configuration (for notifications)
# EMAIL_HOST=smtp.gmail.com
# EMAIL_PORT=587
# EMAIL_USER=your-email@gmail.com
# EMAIL_PASS=your-app-password