Build a Free Crypto Portfolio Tracker Agent in 30 Minutes

Build a Free Crypto Portfolio Tracker Agent in 30 Minutes Most portfolio trackers are web apps that require an account, track your data, and eventually upsell you. You don't need any of that. With Python and a few free APIs, you can build a portfolio tracker that runs on your machine, stores everything locally, and costs nothing to operate. Let's build it. What You'll Build A portfolio tracker that fetches real-time prices P&L calculation for each holding A daily summary emailed or printed to terminal Data stored locally (SQLite or JSON) Optional: Telegram alerts when portfolio moves ±5% Time to build: ~30 minutes Cost: Free External services: None required Step 1: Define Your Portfolio Start simple — a JSON file with your holdings: { "holdings" : [ { "symbol" : "BTC" , "amount" : 0.05 , "avg_buy_price" : 30000 }, { "symbol" : "ETH" , "amount" : 1.5 , "avg_buy_price" : 1800 }, { "symbol" : "SOL" , "amount" : 20 , "avg_buy_price" : 85 }, { "symbol" : "BNB" , "amount" : 3 , "avg_buy_pric