Publish the stored draft to the live storefront
Makes the STORED draft live and records it in the publish history. It publishes what the server already holds, never a document in this request: save one with PUT /api/v1/online-store/draft first, then publish the updated_at that write returned. Sending a draft here is a 400. THE PRECONDITION MATTERS MORE HERE THAN ANYWHERE ELSE IN THIS FAMILY. A stale draft save loses one edit; a stale publish makes a document you never saw the one every shopper renders, and answers 200 as though it were yours. RETRIES: replaying the same Idempotency-Key returns the recorded response and publishes nothing. A FRESH key after a publish that already succeeded is 409 config_modified, because that publish moved updated_at.
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
The only input is the version you expect. A draft or a schema_version sent here is refused by name: this route promotes the document the server already holds, and accepting one in the body would put a tree that never passed validation in front of every shopper.
The updated_at you last read, and NOT nullable here: there is nothing to publish before the first draft save, so null would be a precondition that can never hold. A mismatch is 409 config_modified and means the draft moved under you.
Response
Success
