Get Collections
The collections a store holds with their live document counts: a
bounded roll-up derived from the documents, not a resource list.
Collections are implicit - writing a document names one.
Dark launch: requires the hosted_apis_access entitlement (402 hosted_apis_not_in_plan otherwise).
Authentication
Enter your API key with the Bearer prefix, e.g. ‘Bearer sk_…’.
Path parameters
Store id (prefixed external id, store_...).