Use GetPolicy with an Amazon SDK or CLI

To retrieve the resource-based IAM policy for a function, version, or alias

The following get-policy example displays policy information about the my-function Lambda function.

aws lambda get-policy \
    --function-name my-function

Output:

{
    "Policy": {
        "Version":"2012-10-17",
        "Id":"default",
        "Statement":
        [
            {
                "Sid":"iot-events",
                "Effect":"Allow",
                "Principal": {"Service":"iotevents.amazonaws.com"},
                "Action":"lambda:InvokeFunction",
                "Resource":"arn:aws:lambda:us-west-2:123456789012:function:my-function"
            }
        ]
    },
    "RevisionId": "93017fc9-59cb-41dc-901b-4845ce4bf668"
}

For more information, see Using Resource-based Policies for Amazon Lambda in the Amazon Lambda Developer Guide.

Example 1: This sample displays the Function policy of the Lambda function

Get-LMPolicy -FunctionName test -Select Policy

Output:

{"Version":"2012-10-17","Id":"default","Statement":[{"Sid":"xxxx","Effect":"Allow","Principal":{"Service":"sns.amazonaws.com"},"Action":"lambda:InvokeFunction","Resource":"arn:aws:lambda:us-east-1:123456789102:function:test"}]}