You can see list of collections you have access to. For example, this list will include the public read-only collections, as well as all collections that were created using the currently configured API key.
import chatbees as cb
# Configure to use the API key
cb.init(api_key="my_api_key", account_id="my_account_id")
# List collections
collections = [col.name for col in cb.list_collections()]
# returns custom_collection
print(collections)