> Portal Navigation:
> 
> - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version.
> - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages).
> - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`).
> - Top-level index of all portals: https://dev.wix.com/docs/llms.txt
> - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt

## Resource: About the Unified API Reference

## Article: About the Unified API Reference

## Article Link: https://dev.wix.com/docs/api-reference/articles/platform-overview/about-the-unified-api-reference.md

## Article Content:

# About the Unified API Reference Documentation

Use this guide to find different types of API content across the documentation portals.

## What's in the unified API reference

The unified API reference contains comprehensive REST and SDK documentation for nearly all backend APIs and for service plugins.

## When to use the unified API reference

Use the unified API reference when you need:
- Backend business logic and site operations.
- Service plugins for custom integrations.
- Cross-platform functionality that works with both REST and SDK.
- Comprehensive API documentation with both REST and SDK examples.

## What's in the SDK reference

Frontend-specific and SDK-only functionality remain in the [SDK reference](https://dev.wix.com/docs/sdk.md):

- **Core modules:** Essential SDK functionality for authentication and client setup.
- **Host modules:** APIs for frontend environments like dashboard, editor, and site.
- **Frontend modules:** Browser-specific APIs for client-side interactions.
- **Business solutions:** Extensions and integrations such as dashboard plugins and dashboard pages, and specific backend APIs such as Data Items.

## When to use the SDK reference

Use the SDK reference when you need:
- Frontend JavaScript APIs for browser environments.
- Core SDK setup and configuration.
- Host-specific functionality like dashboard or editor integration.
- Dashboard plugins and custom dashboard pages.
- SDK-specific implementations of select backend APIs, for example Data Items.

## Use these docs with AI tools

Wix developer documentation is available in machine-readable formats for use with AI coding assistants and LLMs. For more information, see [About AI Tools](https://dev.wix.com/docs/api-reference/articles/ai-tools/about-ai-tools.md).