clientMetadata

A map of custom key-value pairs that you can provide as input for any custom workflows that this action triggers.

If your user pool configuration includes triggers, the AdminConfirmSignUp API action invokes the Lambda function that is specified for the post confirmation trigger. When Amazon Cognito invokes this function, it passes a JSON payload, which the function receives as input. In this payload, the clientMetadata attribute provides the data that you assigned to the ClientMetadata parameter in your AdminConfirmSignUp request. In your function code in Lambda, you can process the ClientMetadata value to enhance your workflow for your specific needs.

For more information, see Using Lambda triggers in the Amazon Cognito Developer Guide.

When you use the ClientMetadata parameter, note that Amazon Cognito won't do the following:

• Store the ClientMetadata value. This data is available only to Lambda triggers that are assigned to a user pool to support custom workflows. If your user pool configuration doesn't include triggers, the ClientMetadata parameter serves no purpose.

• Validate the ClientMetadata value.

• Encrypt the ClientMetadata value. Don't send sensitive information in this parameter.