| name | alchemy-reference-architecture |
| description | Implement reference architecture for Alchemy-powered Web3 applications.
Use when designing dApp infrastructure, planning multi-chain deployments,
or structuring a production blockchain application.
Trigger: "alchemy architecture", "dApp architecture", "alchemy project structure",
"web3 system design", "alchemy multi-chain design".
|
| allowed-tools | Read, Write, Edit |
| version | 1.0.0 |
| license | MIT |
| author | Jeremy Longshore <jeremy@intentsolutions.io> |
| tags | ["saas","blockchain","web3","alchemy","architecture"] |
| compatible-with | claude-code |
Alchemy Reference Architecture
System Architecture
┌─────────────────────────────────────────────────────────┐
│ Frontend (React/Next.js) │
│ - Wallet connection (MetaMask, WalletConnect) │
│ - Portfolio dashboard │
│ - NFT gallery │
│ - Transaction history │
└────────────────────────┬────────────────────────────────┘
│ HTTPS (no API key exposed)
┌────────────────────────▼────────────────────────────────┐
│ API Layer (Next.js/Express) │
│ - /api/balance/:address │
│ - /api/nfts/:owner │
│ - /api/tokens/:address │
│ - /api/transactions/:address │
│ - /webhooks/alchemy (webhook receiver) │
└───────┬──────────┬──────────┬───────────────────────────┘
│ │ │
┌────▼───┐ ┌───▼────┐ ┌──▼──────┐
│Alchemy │ │Alchemy │ │Alchemy │
│Core API│ │NFT API │ │Notify │
│(RPC) │ │ │ │(Webhooks│
└────────┘ └────────┘ └─────────┘
ETH/Polygon/ARB/OP/Base
Project Structure
web3-dapp/
├── src/
│ ├── alchemy/
│ │ ├── client-factory.ts # Multi-chain Alchemy client factory
│ │ ├── cache.ts # Response caching with TTL
│ │ ├── throttler.ts # CU-aware rate limiter
│ │ └── errors.ts # Error classification
│ ├── portfolio/
│ │ ├── fetcher.ts # Wallet portfolio aggregator
│ │ ├── transactions.ts # Transaction history analyzer
│ │ └── multi-chain.ts # Cross-chain balance aggregator
│ ├── nft/
│ │ ├── collection.ts # NFT collection explorer
│ │ ├── batch-metadata.ts # Batch metadata fetcher
│ │ └── verify-ownership.ts # NFT ownership verification
│ ├── contracts/
│ │ ├── read-contract.ts # Smart contract read operations
│ │ └── abis/ # Contract ABI files
│ ├── webhooks/
│ │ ├── handler.ts # Webhook endpoint
│ │ ├── verify.ts # HMAC signature verification
│ │ └── event-router.ts # Event type routing
│ ├── security/
│ │ ├── validators.ts # Input validation (addresses, blocks)
│ │ └── proxy.ts # API key proxy for frontend
│ └── api/ # API route handlers
├── tests/
│ ├── unit/ # Unit tests (mocked Alchemy)
│ ├── fork/ # Mainnet fork tests (Hardhat)
│ └── integration/ # Sepolia integration tests
├── contracts/ # Solidity contracts (if applicable)
├── hardhat.config.ts # Hardhat + Alchemy fork config
└── package.json
Key Design Decisions
