I would like to be able to use a placeholder varialble in a URL listed as a Allowed Callback URL in an AWS Cognito User Pool app client
e.g. Using a URL like this to have the slug field be variable
https://some-domain/${slug}/loginOauth
Is there any way to do this?
I have tried using the variable notation used in API Gateway to map Stage Variables but that did not work.
Unfortunately not. AWS Cognito doesn't support placeholders in callback URLs because of security reasons.