Alchemy Install & Auth Overview Install the npm package and configure API authentication. Alchemy provides blockchain infrastructure (RPC nodes, Enhanced APIs, NFT APIs, webhooks) across Ethereum, Polygon, Arbitrum, Optimism, Base, and Solana. Prerequisites - Node.js 18+ (or Python 3.10+ for alchemy-sdk Python) - Free Alchemy account at alchemy.com - API key from Alchemy Dashboard Instructions Step 1: Install the Alchemy SDK Step 2: Create an Alchemy App 1. Go to dashboard.alchemy.com 2. Click "Create new app" 3. Select chain: Ethereum, Polygon, Arbitrum, Optimism, Base, or Solana 4. Select n…