> For the complete documentation index, see [llms.txt](https://docs.agnostic.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.agnostic.dev/fundamentals.md).

# Fundamentals

- [Data visualization](https://docs.agnostic.dev/fundamentals/data-visualization.md)
- [Create your first chart](https://docs.agnostic.dev/fundamentals/data-visualization/create-your-first-chart.md)
- [Building API](https://docs.agnostic.dev/fundamentals/building-api.md)
- [HTTP Interface](https://docs.agnostic.dev/fundamentals/http-interface.md): How to use the HTTP interface
- [Authentication](https://docs.agnostic.dev/fundamentals/http-interface/authentication.md)
- [Authentication details](https://docs.agnostic.dev/fundamentals/authentication-details.md)
- [PostgreSQL](https://docs.agnostic.dev/fundamentals/authentication-details/postgresql.md)
- [HTTP](https://docs.agnostic.dev/fundamentals/authentication-details/http.md)
- [Understanding Projects](https://docs.agnostic.dev/fundamentals/understanding-projects.md)
- [Collaborate with your team](https://docs.agnostic.dev/fundamentals/collaborate-with-your-team.md)
- [Setting permissions](https://docs.agnostic.dev/fundamentals/collaborate-with-your-team/setting-permissions.md)
- [Inviting Members](https://docs.agnostic.dev/fundamentals/collaborate-with-your-team/inviting-members.md)