{ data, meta }. data is an object or a list; meta carries what the call cost and how fresh the answer is.
credits_used: what this call cost.credits_remaining: monthly plus pack credits left.freshness: when the oldest requested country was fetched from the store, whether it is stale, and a job to poll if a refresh is still running. See Freshness.next_cursor: the next page, ornull. See Pagination.warnings: things worth telling the user (for example that an app was resolved by name).request_id: quote it when you contact support.
Errors
Errors use the HTTP status and one body shape, whoever answered. Readhint: it says what to do next.
invalid_param to upstream_unavailable, is listed with causes and fixes on Errors.