---
title: "Source Reference"
description: "Routes authors to the canonical workspace layout, rule source model, and Markdown preprocessing reference."
---

> Documentation Index
> Fetch the complete documentation index at: https://nimbus.focal.host/llms.txt
> Use this file to discover all available pages before exploring further.

# Source Reference

<a id="source-reference"></a>

Use this section when you need to locate or interpret authored Skillset source.

- [Workspace layout](/skillset/reference/source/workspace-layout/) identifies the root manifest, source families, [provider-native](/skillset/glossary/#provider-native) islands, and operational paths.
- [Rules](/skillset/reference/source/rules/) explains portable rule source and its provider-specific [destinations](/skillset/glossary/#destination).
- [Preprocessing](/skillset/reference/source/preprocessing/) defines variables, path references, partials, prompt arguments, and literal escaping in Markdown source.

For field-by-field shapes, use the generated [schema reference](/skillset/reference/schemas/). For current provider support, use the generated [support matrix](/skillset/reference/support-matrix/).

Source: https://nimbus.focal.host/skillset/reference/source/index.mdx