API Reference > itwin-client > Authentication Authentication Classes for managing [AccessToken] used for all requests in other classes. Classes Name Description AccessToken Token issued by DelegationSecureTokenService for API access Beta AuthorizedClientRequestContext Provides generic context for a server application to get details of a particular request that originated at the client. ImsAuthorizationClient Beta UserInfo Information on the authenticated user. Beta Enumerations Name Description IncludePrefix Option to specify if the prefix identifying the token is included when serializing the access token. Beta Global Functions Name Description isAuthorizedClientRequestContext AuthorizedClientRequestContext type guard. Beta Interfaces Name Description AccessTokenProps Properties for transmitting AccessTokens between processes Beta AuthorizationClient Interface to provide authorization information Beta AuthorizedClientRequestContextProps The properties of AuthorizedClientRequestContext. Beta AuthorizedSession Beta AuthorizedSessionProps The properties of AuthorizedSession. Beta UserInfoProps Beta Last Updated: 29 November, 2022