Urbit / Docs


Welcome to the documentation for the Urbit project, including the Azimuth identity layer, the Arvo operating system, and the Hoon programming language. This documentation is maintained by Tlon in a public GitHub repository. Issues and contributions are welcome.

The documentation is organized into four high-level sections. Read on to get acquainted.


If you're looking for a high-level introduction to the Urbit project and its components, start here.

Getting Started

If you'd like to install Arvo, get an Azimuth point, and/or get on the Urbit network, you'll find guides here. Dive in, and don't be afraid to ask for help!


If you're interested in contributing to the project, building applications, or understanding the system technically, take a look at our tutorials and explanations of the Urbit components.


If you're a developer looking for Arvo reference documentation, this section is for you.

  • The Glossary will help if you're confused by all the new jargon.

  • The Cheat Sheet is a compact document for looking up Hoon expressions.