> For the complete documentation index, see [llms.txt](https://techwritingtools.gitbook.io/dockit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://techwritingtools.gitbook.io/dockit/documentation/user-guide.md).

# User Guide

User Guide for version 0.4.x

[DocKit](https://marketplace.visualstudio.com/items?itemName=DocKit.oas-docs) is a Visual Studio Code (VS Code) extension for reviewing and editing OpenAPI specifications. DocKit helps technical writers review and improve the quality of API documentation in OpenAPI specification files. It adds OpenAPI-aware navigation, editing, validation, spelling and terminology checks, optional prose style checks, and other documentation tools to VS Code.

This guide assumes that you understand the technical concepts behind REST APIs and OpenAPI, but it does not assume that you are an API developer.

{% hint style="info" %}
DocKit works with OpenAPI 3.1.x, OpenAPI 3.0.x, and OpenAPI 2.0 (Swagger 2.0) specifications. In this guide, **OpenAPI specification** refers to the specification document you are editing.
{% endhint %}