Asynchronous by design
Accepted requests return a durable job identifier. Provider work continues outside the request lifecycle.
API purchases and production scraping are not available in the first Online release. The documentation below describes the planned REST interface, not currently purchasable capabilities.
One accepted Search, Reviews, or Photos source-page request is one API unit. Validation, authentication, quota, and other pre-admission denials are not billed. A request is billable after durable provider or cache admission even if it later returns empty, partial, or failed.