Get customer
## Get customer by ID
Fetches a single customer by its `id`, scoped to the authenticated merchant's store.
### Authentication
- Send the merchant API key in the **`x-api-key`** header (alias `x-account-api-key`).
- Requires the scope: **`Merchant.customer.read`**.
- Optionally scope the key with **`x-application-account-id`** (alias `x-account-id`) or the `application_account_id` / `account_id` query param.
### Path params
- `id`: the customer UUID.
### Behavior
- Only returns customers belonging to the caller's store. If the customer does not exist for that store, responds **404 Not Found** (`"Customer with ID \"<id>\" not found."`).
---
**Notas:** Store-scoped lookup: a customer belonging to another store returns 404, not 403. Related: PATCH /v1/customers/:id, DELETE /v1/customers/:id.
Authentication
x-api-keystring
API Key authentication via header
Path parameters
id
The customer’s unique identifier (UUID). Must belong to the authenticated store.
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.