Urbit / Docs

Reference

Various reference documents are stored here, particularly for Hoon, but also for other parts of the system.

The Glossary

Urbit is known for introducing a great deal of new terminology. The glossary will help demystify our jargon.

The Cheat Sheet

The cheat sheet is a compact document for looking up Hoon runes.

Hoon Expressions

This section contains more comprehensive reference materials for Hoon runes and other expressions, describing their exact semantics and syntax.

Standard Library

This section documents the gates and mold-builders of the Hoon standard library.

Troubleshooting

When your Hoon produces an error, check what it means here.