[Home](./index.md) > [ibm-cloud-sdk-core](./ibm-cloud-sdk-core.md) > [AuthenticatorInterface](./ibm-cloud-sdk-core.authenticatorinterface.md) ## AuthenticatorInterface interface This interface defines the common methods associated with an Authenticator implementation. **Signature:** ```typescript export interface AuthenticatorInterface ``` ## Methods

Method	Description
[authenticate(requestOptions)](./ibm-cloud-sdk-core.authenticatorinterface.authenticate.md)	Add authentication information to the specified request.
[authenticationType()](./ibm-cloud-sdk-core.authenticatorinterface.authenticationtype.md)	Returns a string that indicates the authentication type.