[Home](./index.md) > [ibm-cloud-sdk-core](./ibm-cloud-sdk-core.md) > [Authenticator](./ibm-cloud-sdk-core.authenticator.md) ## Authenticator class Base Authenticator class for other Authenticators to extend. Not intended to be used as a stand-alone authenticator. **Signature:** ```typescript export declare class Authenticator implements AuthenticatorInterface ``` **Implements:** [AuthenticatorInterface](./ibm-cloud-sdk-core.authenticatorinterface.md) ## Constructors

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

## Properties

Property	Modifiers	Type	Description
[AUTHTYPE\_BASIC](./ibm-cloud-sdk-core.authenticator.authtype_basic.md)	`static`	string	Constants that define the various authenticator types.
[AUTHTYPE\_BEARERTOKEN](./ibm-cloud-sdk-core.authenticator.authtype_bearertoken.md)	`static`	string
[AUTHTYPE\_CONTAINER](./ibm-cloud-sdk-core.authenticator.authtype_container.md)	`static`	string
[AUTHTYPE\_CP4D](./ibm-cloud-sdk-core.authenticator.authtype_cp4d.md)	`static`	string
[AUTHTYPE\_IAM\_ASSUME](./ibm-cloud-sdk-core.authenticator.authtype_iam_assume.md)	`static`	string
[AUTHTYPE\_IAM](./ibm-cloud-sdk-core.authenticator.authtype_iam.md)	`static`	string
[AUTHTYPE\_MCSP](./ibm-cloud-sdk-core.authenticator.authtype_mcsp.md)	`static`	string
[AUTHTYPE\_NOAUTH](./ibm-cloud-sdk-core.authenticator.authtype_noauth.md)	`static`	string
[AUTHTYPE\_UNKNOWN](./ibm-cloud-sdk-core.authenticator.authtype_unknown.md)	`static`	string
[AUTHTYPE\_VPC](./ibm-cloud-sdk-core.authenticator.authtype_vpc.md)	`static`	string

## Methods

Method	Modifiers	Description
[authenticate(requestOptions)](./ibm-cloud-sdk-core.authenticator.authenticate.md)		Augment the request with authentication information.
[authenticationType()](./ibm-cloud-sdk-core.authenticator.authenticationtype.md)		Retrieves the authenticator's type. The returned value will be the same string that is used when configuring an instance of the authenticator with the <service\_name>\_AUTH\_TYPE configuration property (e.g. "basic", "iam", etc.). This function should be overridden in each authenticator implementation class that extends this class.