I'm writing a lambda to customize the claims on the accessToken before the token is generated. I need to call an external API with data from my Cognito user pool to get information to customize the claim. This lambda would be triggered before sign in. How do I get a specific field for a particular user from the pool?
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Did you ever figure this out? I'd also like to know this. – Caleb May 31 '21 at 12:33