MongoDB Atlas Has a Free API — Here's How to Build a Full Backend in 10 Minutes

A solo developer I know was paying $50/month for a PostgreSQL instance that held 200MB of data. He switched to MongoDB Atlas free tier — same data, same speed, $0/month. That was 2 years ago and he's still on the free tier. What Atlas Free Tier Includes MongoDB Atlas M0 (free forever): 512 MB storage — enough for most side projects and MVPs Shared RAM — adequate for moderate traffic MongoDB 7.0+ with all features Atlas Data API — REST API for your database (no driver needed!) Atlas Search — full-text search built in Charts — visualize data without code 3 replica set nodes — automatic failover Quick Start: Atlas Data API The Data API lets you query MongoDB via REST — no driver, no connection strings: # Enable Data API in Atlas dashboard > App Services > Data API curl -X POST 'https://data.mongodb-api.com/app/YOUR_APP_ID/endpoint/data/v1/action/find' \ -H 'Content-Type: application/json' \ -H 'api-key: YOUR_API_KEY' \ -d '{ "dataSource": "Cluster0", "database": "myapp", "collection": "us