aws-lager/dev-app/iam/policies/Cognito.json

AWS Lambda / API Gateway / Endpoint Router

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "cognito-identity:GetOpenIdTokenForDeveloperIdentity",
        "cognito-identity:LookupDeveloperIdentity"
      ],
      "Resource": [
        "arn:aws:cognito-identity:*:*:*"
      ]
    }
  ]
}