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