[Home](./index.md) > [ibm-cloud-sdk-core](./ibm-cloud-sdk-core.md) > [IamTokenManager](./ibm-cloud-sdk-core.iamtokenmanager.md) ## IamTokenManager class The IamTokenManager takes an api key and performs the necessary interactions with the IAM token service to obtain and store a suitable bearer token. Additionally, the IamTokenManager will retrieve bearer tokens via basic auth using a supplied "clientId" and "clientSecret" pair. **Signature:** ```typescript export declare class IamTokenManager extends IamRequestBasedTokenManager ``` **Extends:** [IamRequestBasedTokenManager](./ibm-cloud-sdk-core.iamrequestbasedtokenmanager.md) ## Constructors

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

## Properties

Property	Modifiers	Type	Description
[requiredOptions](./ibm-cloud-sdk-core.iamtokenmanager.requiredoptions.md)	`protected`	string\[\]

## Methods

Method	Modifiers	Description
[getRefreshToken()](./ibm-cloud-sdk-core.iamtokenmanager.getrefreshtoken.md)		Returns the most recently stored refresh token.