Create a review group
Authorizations
A secret API key. Publishable keys cannot reach this API. A key may carry an expiry, and an expired key is refused exactly like an unknown one, with a 401 that names no reason; check the key's expires_at in the dashboard rather than inferring it from a response. When a merchant rolls a key's secret they choose a grace window of up to 3 days, and for its duration BOTH the new secret and the one it replaced authenticate, so an integration moves over on its own deploy schedule instead of at the instant the button is pressed. Move before the window closes: after it, the old secret is refused. Nothing else about this contract moves with a roll. The key keeps its id and its scopes, so the only thing an integration updates is the credential itself.
Headers
A unique key per logical write. Replaying a request with the same key returns the first response byte for byte instead of applying the write twice.
Body
A pool that shares one set of reviews and one rating across several products (bundles or identical listings sold under different ids). Creating a group publishes nothing to a reader on its own: an empty group with no members changes no product's rating. Entitlement-gated on the Growth plan's review-groups feature; a store without it receives 403 feature_not_entitled.
Required. The merchant's own label, unique per store. A duplicate name answers 409 name_taken.
Response
Created