# Reference

This section contains detailed reference materials for Alluxio, including API documentation, command-line interface (CLI) usage, and other technical information.

* [**S3 API**](https://documentation.alluxio.io/ee-ai-en/ai-3.7/reference/s3-api-usage): Examples and usage details for the S3-compatible API.
* [**REST API**](https://documentation.alluxio.io/ee-ai-en/ai-3.7/reference/rest-api): Documentation for the Alluxio REST API endpoints.
* [**User CLI**](https://documentation.alluxio.io/ee-ai-en/ai-3.7/reference/user-cli): A guide to the Alluxio command-line interface for users.
* [**Metrics**](https://documentation.alluxio.io/ee-ai-en/ai-3.7/reference/metrics): A comprehensive list of metrics exposed by Alluxio for monitoring.
* [**Third-Party Licenses**](https://documentation.alluxio.io/ee-ai-en/ai-3.7/reference/third-party-licenses): Information about third-party licenses used in Alluxio.