# Optional parameters

This section describes the optional parameters that can be used in the paths described in the following sections:

[Working with entities](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/RepositoryServiceAPI/Content/Sense_RepositoryServiceAPI/RepositoryServiceAPI-Working-With-Entities.htm)

[QRS API endpoints (subset)](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/RepositoryServiceAPI/Content/Sense_RepositoryServiceAPI/RepositoryServiceAPI-QRS-API-Endpoints.htm)

[QRS API reference](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/RepositoryServiceAPI/Content/Sense_RepositoryServiceAPI/RepositoryServiceAPI-Reference-Redirect.htm)