I Built an AI-Powered Database Schema Explorer for the H0 Hackathon

The following content was created for the purposes of entering the H0 Hackathon. #H0Hackathon

You join a new project. The database has 30 tables. No documentation. No ERD. No one remembers why status_v2_legacy exists.

Existing tools force a tradeoff. pgAdmin gives raw access but no visualization. dbdiagram.io lets you draw schemas but requires manual input that goes stale after every migration. SchemaSpy needs CLI setup and Java. DBeaver is desktop-only — you can't share a link with a new hire.

I looked for a web tool that auto-discovers schemas, visualizes them, documents them, and lets you query them with AI. I found nothing that does all four.

So I built SchemaLens for the H0 Hackathon.