To retrieve the permissions policy for a Lambda layer version

The following get-layer-version-policy example displays policy information about version 1 for the layer named my-layer.

aws lambda get-layer-version-policy \
    --layer-name my-layer \
    --version-number 1

Output:

{
    "Policy": {
        "Version":"2012-10-17",
        "Id":"default",
        "Statement":
        [
            {
                "Sid":"xaccount",
                "Effect":"Allow",
                "Principal": {"AWS":"arn:aws:iam::123456789012:root"},
                "Action":"lambda:GetLayerVersion",
                "Resource":"arn:aws:lambda:us-west-2:123456789012:layer:my-layer:1"
            }
        ]
    },
    "RevisionId": "c68f21d2-cbf0-4026-90f6-1375ee465cd0"
}

For more information, see AWS Lambda Layers in the AWS Lambda Developer Guide.