Article by Nick Frichette.
Whoami - Get Principal Name From Keys
Original Research: Spencer Gietzen
Warning
As of August 15, 2020 these calls are now tracked in CloudTrail (tweet). This page is maintained for historical and inspiration purposes.
sdb list-domains
As found by Spencer Gietzen, the API call for sdb list-domains will return very similar information to get-caller-identity.
user@host:$ aws sdb list-domains --region us-east-1
An error occurred (AuthorizationFailure) when calling the ListDomains operation: User (arn:aws:sts::123456789012:assumed-role/example_role/i-00000000000000000) does not have permission to perform (sdb:ListDomains) on resource (arn:aws:sdb:us-east-1:123456789012:domain/). Contact account owner.