# User Config

User Config is a means of dynamically providing configuration for users of Caplin’s client applications. It allows you to enable, disable, and configure application features for users of different types, with a simplified API and enhanced granularity over older permissioning systems, such as Liberator’s [Permissioning Auth Module](../caplin-platform/platform-architecture/permissioning.md).

## Overview

User Config is implemented by creating a Configuration Service in an adapter. A Configuration Service is a collection of Config Providers organised by asset class and user type, registered with Config Adapters. Config Providers provide User Config objects to be streamed to a number of StreamLink subjects, organised by the same criteria.

See [User Config Adapters](fxapi-user-config-adapters.md) for a reference to the Config Adapters and their related objects in the FX Integration API.

For instructions on how to implement User Config, see [Implementing User Config](./fxapi-implementing-user-config.md).

## Relationship to Liberator auth modules

User Config removes a client application’s dependency on Liberator’s [Permissioning Auth Module](../caplin-platform/platform-architecture/permissioning.md) to supply user application-entitlements, but it does _not_ remove the requirement for a Liberator auth module.

* Users continue to require permission to subscribe to specific subjects. This is now delegated to [tokenauth](../caplin-platform/liberator/liberator-user-authentication-and-permissioning.md#tokenauth-2) using the TokenPermissioning blade, that will enable the configuration subjects as part of the SSO (Single Sign-On) mechanism.
* Disabling a feature in User Config does not prevent Liberator from accepting a user’s requests to StreamLink subjects related to that feature. It is the adapter’s responsibility to verify the user’s feature permissions.

**See also:**

* [User Config Adapters](fxapi-user-config-adapters.md)
* [User Config Reference](fxapi-user-config-api-reference.md)
* [Implementing User Config](fxapi-implementing-user-config.md)