docs/29.0.0/api-reference/api-reference.md

---
id: api-reference
title: API reference
sidebar_label: Overview
---

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This topic is an index to the Apache Druid API documentation.

## HTTP APIs
* [Druid SQL queries](./sql-api.md) to submit SQL queries using the Druid SQL API.
* [SQL-based ingestion](./sql-ingestion-api.md) to submit SQL-based batch ingestion requests.
* [JSON querying](./json-querying-api.md) to submit JSON-based native queries.
* [Tasks](./tasks-api.md) to manage data ingestion operations.
* [Supervisors](./supervisor-api.md) to manage supervisors for data ingestion lifecycle and data processing.
* [Retention rules](./retention-rules-api.md) to define and manage data retention rules across datasources.
* [Data management](./data-management-api.md) to manage data segments.
* [Automatic compaction](./automatic-compaction-api.md) to optimize segment sizes after ingestion.
* [Lookups](./lookups-api.md) to manage and modify key-value datasources.
* [Service status](./service-status-api.md) to monitor components within the Druid cluster. 
* [Dynamic configuration](./dynamic-configuration-api.md) to configure the behavior of the Coordinator and Overlord processes.
* [Legacy metadata](./legacy-metadata-api.md) to retrieve datasource metadata.

## Java APIs
* [SQL JDBC driver](./sql-jdbc.md) to connect to Druid and make Druid SQL queries using the Avatica JDBC driver.