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 * [Adidas REST API Guidelines](https://github.com/adidas/api-guidelines/blob/master/rest-api-guidelines/rest.md) - Adidas REST API Guidelines define standards and guidelines for building REST APIs at adidas.
 * [Atlassian REST API design guidelines version 1](https://developer.atlassian.com/server/framework/atlassian-sdk/atlassian-rest-api-design-guidelines-version-1/) - This document provides guidelines to Atlassian developers who are designing REST APIs for Atlassian applications.
 * [Cisco REST API Guide](https://github.com/CiscoDevNet/api-design-guide) - Guidelines for designing REST APIs at Cisco.
+* [Haufe API Style Guide](https://github.com/Haufe-Lexware/api-style-guide) - Guidelines created by Haufe-Lexware CTO team.
 * [Microsoft REST API Guidelines](https://github.com/Microsoft/api-guidelines/blob/vNext/Guidelines.md#readme) - The Microsoft REST API Guidelines, as a design principle, encourages application developers to have resources accessible to them via a RESTful HTTP interface.
 * [Restful API Guidelines by Zalando](https://github.com/zalando/restful-api-guidelines) - Developing Restful APIs: A Comprehensive Set of Guidelines.