Can we store the API key securely in looker cloud core

[SachinS]

In work I am triggering the cloud function from looker dashbaord by using data action , since we created the cloud function with alluser and all traffic and allow unauthenticated access , it raising the security concerns to mitigate this can we securalty store API key in Looker and get this in lookml file without exposing and pass it as param in data action , so we can  comapare the API token with cloud function api token and then only next step will process