I Built a Password Strength Analyzer API with Python + FastAPI 🔐 As a backend developer, I wanted to build something useful, real, and monetizable — not just another tutorial project. So I built a Password Strength Analyzer API that any developer can integrate into their app in minutes. What it does Returns a strength score from 0 (very weak) to 4 (very strong) Estimates crack time using real-world attack scenarios Detects if the password is in known breach lists Returns actionable suggestions to improve security Analyzes uppercase, lowercase, numbers and symbols Tech Stack Python 3.10+ FastAPI — for the REST API zxcvbn — the same algorithm Dropbox uses Pydantic — data validation Render — cloud deployment Example Request curl -X POST "https://password-analyzern.onrender.com/analyze" \ -H "Content-Type: application/json" \ -H "X-API-Key: YOUR_API_KEY" \ -d '{"password": "MyP@ssw0rd!"}' Enter fullscreen mode Exit fullscreen mode Example Response { "password" : "***********" , "score" : 3 , "strength_label" :…