I built a stock market data API with FastAPI, here's what I learned

What I built A REST API that gives developers access to real-time stock quotes, historical data, technical indicators, and crypto prices. Built with FastAPI and deployed on Railway. Endpoints GET /stocks/quote/{symbol} — live price, volume, change GET /stocks/history/{symbol} — OHLCV going back years GET /stocks/indicators/{symbol} — RSI, MACD, SMA, EMA GET /stocks/info/{symbol} — market cap, P/E, sector GET /crypto/quote/{symbol} — crypto prices GET /market/movers — top gainers and losers POST /stocks/batch — multiple symbols at once Tech stack FastAPI (Python) yfinance for data PostgreSQL on Railway Stripe for billing slowapi for rate limiting Try it free 100 requests/day, no credit card required. 👉 https://thisapi-production-d755.up.railway.app