sts:GetSessionToken is a Read access-level action in the sts service. Grants permission to obtain a set of temporary security credentials (consisting of an access key ID, a secret access key, and a security token) for an AWS account or IAM user
This action does not support resource-level permissions; use "Resource": "*" in your policy.
No condition keys are documented for this action.
A minimal policy that allows sts:GetSessionToken. Replace "Resource": "*" with a specific ARN to follow least privilege.
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "AllowStsGetSessionToken",
"Effect": "Allow",
"Action": "sts:GetSessionToken",
"Resource": "*"
}
]
}