[Home](./index.md) > [ibm-cloud-sdk-core](./ibm-cloud-sdk-core.md) > [McspAuthenticator](./ibm-cloud-sdk-core.mcspauthenticator.md) ## McspAuthenticator class The McspAuthenticator uses an apikey to obtain an access token from the MCSP token server. When the access token expires, a new access token is obtained from the token server. The access token will be added to outbound requests via the Authorization header of the form: "Authorization: Bearer " **Signature:** ```typescript export declare class McspAuthenticator extends TokenRequestBasedAuthenticator ``` **Extends:** [TokenRequestBasedAuthenticator](./ibm-cloud-sdk-core.tokenrequestbasedauthenticator.md) ## Constructors

Constructor	Modifiers	Description
[(constructor)(options)](./ibm-cloud-sdk-core.mcspauthenticator._constructor_.md)		Create a new McspAuthenticator instance.

## Properties

Property	Modifiers	Type	Description
[requiredOptions](./ibm-cloud-sdk-core.mcspauthenticator.requiredoptions.md)	`protected`	string\[\]
[tokenManager](./ibm-cloud-sdk-core.mcspauthenticator.tokenmanager.md)	`protected`	[McspTokenManager](./ibm-cloud-sdk-core.mcsptokenmanager.md)

## Methods

Method	Modifiers	Description
[authenticationType()](./ibm-cloud-sdk-core.mcspauthenticator.authenticationtype.md)		Returns the authenticator's type ('cp4d').