# `GET /v1/customer`

Protected. Requires a valid session cookie (`credentials: 'include'`).

JTL-POS customer catalog synchronization

Returns customer list modified after lastChangedCustomer cursor for the authenticated POS register.

## Query parameters

| Param | Required | Type | Description |
|-------|----------|------|-------------|
| `lastChangedCustomer` | no | string | Unix timestamp cursor of last customer sync |
| `limit` | no | integer | Maximum number of customers to return |

## Response `200`

Array of customer objects for JTL-POS

```json
[
  {
    "id": "…",
    "customerNumber": "…",
    "firstname": "…",
    "lastname": "…",
    "title": "…",
    "company": "…",
    "address": "…",
    "addressSupplement": "…",
    "city": "…",
    "postalCode": "…",
    "state": "…",
    "country": "…",
    "phone": "…",
    "email": "…",
    "customerGroupId": "…",
    "salutation": "…",
    "birthday": "…",
    "discount": "…",
    "taxIdNumber": "…",
    "lastChanged": "…",
    "debtorNumber": "…"
  }
]
```

## Errors

| Status | Description |
|--------|-------------|
| 401 | Unauthorized |

---

_Generated from `@openapi` JSDoc. Do not edit by hand — run `npm run docs:api`._