Mongo Atlas API - Get Databases and Collections in a Cluster

So with Mongo Atlas I can easily list clusters in a project by calling the API as follows: curl -i -u ":" --digest "https://cloud.mongodb.com/api/atlas/v1.0/groups//clusters " I want to list all database (and if possible all nested collections) for a particular cluster. Is this possible via the API - I am sure it must be but I am not seeing it in the documentation. I want to avoid having to connect to each cluster and collecting this information with a query - this is for a service discovery tool I am building for inventorying purposes. Thanks