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Getting started

JillionDB shows you what your coding agent wants to change in your database before anything happens, in plain words, with the risk of each change.

What it does

When an agent like Claude Code or Cursor needs a database change, it sends the change to JillionDB instead of writing it straight into your project. You see it drawn on your schema, with each change marked safe, caution or destructive and a reason you can read without knowing SQL.

Only you can approve. Once you do, the agent gets the exact migration for your database, plus a way to undo it, and writes it into your project like it normally would.

Try it in a minute

The demo opens a ready-made workspace with proposals already waiting. No account needed, and it deletes itself after 24 hours.

Set up your own

1. Create an account and confirm your email.
2. Create a project and pick your database: PostgreSQL, MySQL or SQLite.
3. Bring in your schema: start from the template, import a dump of your existing database, or draw tables yourself. See The schema designer.
4. Connect your agent with a key.