---
id: api-index
title: API Documentation
sidebar_position: 1
---

# API Reference

Complete technical reference for Haystack classes, functions, and modules.

## Haystack API

Core framework API for the `haystack-ai` package. This includes all base components, pipelines, document stores, data classes, and utilities that make up the Haystack framework.

## Integrations API

API reference for official Haystack integrations distributed as separate packages (for example, `<integration-name>-haystack`). Each integration provides components that connect Haystack to external services, models, or platforms. For more information, see the [integrations documentation](/docs/integrations).

## Experiments API

API reference for experimental features. These APIs are under active development and may change in future releases. For more information, see the [experimental features documentation](/docs/experimental-package).