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Customize User Details Web Hook

The user details customization web hook is meant to be identity-centric, meaning that it should only focus on user-related information. Modifying access control is out of scope.

To get a better understanding please consider the following scenarios:

  1. There is another service that is a source of user-related information. The returned attributes are complementary to what is provided by the configured identity provider instance.
  2. The client expects certain claims to be provided in sophisticated format (regardless if it related to the claim name or how the value is represented).
  3. There is a need for dynamic (based on given factors/state) reduction of some of the user-related information that will be provided to the clients.

The web hook specification

The web hook input parameters include:

  • identity of the user
  • set of requested scopes
  • all available user-related claims
  • web hook context (optional custom parameters), i.e.: 'on_behalf_of', 'on_behalf_of_type' when integrating with a Externalized Authorization product

Based on the above information the web hook is allowed to filter, change and introduce new user claims.

Please note that the following claims are considered protected and are not allowed to be modified:

  • "iss"
  • "aud"
  • "verified_claims"
  • "sub"
  • "*"
  • "group_permissions"

The web hook is executed before the id-token and user-info response creation. This way, we can feed the implementor all information that are available, and also ensure a deterministic result.

API Contract

The OpenAPI specification of the web hook can be found here

Web Hook configuration

Before the web hook can be used a few configuration steps are required. First, you need to provide the details about where the web hook API can be reached, including the authentication details. Once that's available, you should be able to link the just-defined web hook instance to your client.

Defining a Web Hook instance

In order to define a new web hook instance login to Access's admin console and navigate to Configuration -> System -> Web Hooks tab. Next, select Add Web Hook Configuration option and provide necessary information:

  • define the name for the new web hook
  • choose User Details Customization type
  • set the base URL. Please note that the base URL will be concatenated with the web hook path that's defined in the API contract. For example, by setting the Access seek will be calling the following location
  • choose the desired authentication scheme

Once done, save the configuration and proceed to your client configuration page.

Updating client configuration

Due to its characteristics, it only makes sense to configure the user details customization web hook with clients that are acting as OpenID Connect (OIDC) Relying Parties (RPs). The web hook can be configured for both, dynamic (represented by mobile applications) and static (represented usually by web apps/portals) clients. Depending on the type of the client you want to configure navigate to Configuration -> App Configuration -> Applications or Configuration -> Web clients respectively. The web hook configuration is available at OpenID Connect configuration page that is shown ONLY after enabling openid scope for that client.