List principals associated with a thing

To list the principals associated with the specified thing, run the list-thing-principals command. Note that this command doesn't list the attachment type between the thing and the certificate. To list the attachment type, use the list-thing-principals-v2 command. For more information, see List principals associated with a thing V2.

$ aws iot list-thing-principals \
    --thing-name "MyLightBulb1"

The output can look like the following.

{
    "principals": [
         "arn:aws:iot:us-east-1:123456789012:cert/2e1eb273792174ec2b9bf4e9b37e6c6c692345499506002a35159767055278e8",
         "arn:aws:iot:us-east-1:123456789012:cert/1a234b39b4b68278f2e9d84bf97eac2cbf4a1c28b23ea29a44559b9bcf8d395b"
    ]
}

For more information, see ListThingPrincipals from the AWS IoT Core API Reference.