# Brix > An AI money assistant for college students: it catches free trials before they bill, spots borrowed money in school refunds, tracks gift cards, and offers practice investing. Brix never moves money. ## Docs - [API docs (Markdown)](https://www.usebrix.app/developers.md): authentication, scopes, conventions, errors and every endpoint with a curl example - [OpenAPI 3.1 spec](https://www.usebrix.app/api/v1/openapi.json): machine-readable API definition - [Developer page](https://www.usebrix.app/developers): the same docs as HTML ## Optional - [Source code](https://github.com/Timeless-Dave/brix): Next.js app, tests and setup guide