aws sts get-session-token
Returns a set of temporary credentials for an Amazon Web Services account or IAM user. AWS CLI reference
4 options Its page in the AWS CLI reference
Options
--duration-secondsThe duration, in seconds, that the credentials should remain valid.--minimum-session-token-sizeThe minimum size, in bytes, of the session token that STS issues for the request.--serial-numberThe identification number of the MFA device that is associated with the IAM user who is making the GetSessionToken call.--token-codeThe value provided by the MFA device, if MFA is required.