Get product
## Get product by ID
Returns a single product owned by the authenticated store, together with its fully expanded modifiers (including modifier options) and linked apps (id + name).
### Authentication
Requires a Merchant API key in `x-api-key` with scope `Merchant.product.read`.
### Path params
- `id` (required) — the product UUID.
### Response
Returns an object with:
- `product` — the product fields (with `productCategory`, `modifiers`, `apps` relations excluded from this sub-object).
- `modifiers` — array of full modifier objects, each including its `options`.
- `apps` — array of `{ Id, Name }` for linked apps.
Responds 400 `Product with id <id> not found` if the product does not exist in your store.
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**Notas:** The product must belong to the caller's store; otherwise 400 (BadRequestException, not 404). modifiers include nested options; apps are projected to Id + Name only.
Authentication
x-api-keystring
API Key authentication via header
Path parameters
id
The product UUID.
Headers
x-application-account-id
Scope the request to a specific store / account instead of the one resolved from the API key. Aliases: the x-account-id header, or the application_account_id / account_id query parameter.