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Prerequisites

Required tools: - Node.js 18+ and pnpm - Foundry (for contracts) - Redis (for backend caching) - Docker (optional, for indexer)

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Clone the Repository

git clone https://github.com/your-org/pulend.git
cd pulend

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Setup Components

1

Smart Contracts

cd contracts
forge install
forge build
Deploy to Arbitrum Sepolia:
forge script script/Deploy.s.sol --rpc-url $ARBITRUM_SEPOLIA_RPC --broadcast
2

Backend

cd backend pnpm install cp .env.example .env # Edit .env with your
RPC_URL and REDIS settings pnpm dev ``` The API runs on
`http://localhost:3001`.
</Step>

<Step title="Frontend">
```bash cd frontend pnpm install cp .env.example .env # Edit .env with
contract addresses pnpm dev ``` Open `http://localhost:3000` in your browser.
</Step>

<Step title="Indexer (Optional)">
```bash
cd indexer
yarn install
yarn codegen
yarn build
docker-compose up -d  # Start local Graph node
yarn deploy-local

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Environment Variables

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Backend .env

PORT=3001
RPC_URL=https://sepolia-rollup.arbitrum.io/rpc
REDIS_HOST=localhost
REDIS_PORT=6379
PRICE_CACHE_TTL=60

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Frontend .env

NEXT_PUBLIC_LENDING_POOL_ADDRESS=0x...
NEXT_PUBLIC_COLLATERAL_NFT_ADDRESS=0x...
NEXT_PUBLIC_BACKEND_URL=http://localhost:3001

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Next Steps

Architecture

Understand the system design.

Smart Contracts

Explore the contract interfaces.