# `POST /supplier`

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

Create supplier

Creates a supplier in the company `Lieferanten` group (created on first use).


## Body (JSON)

| Field | Required | Type | Description |
|-------|----------|------|-------------|
| `name` | yes | string |  |

```json
{
  "name": "Großhandel Müller"
}
```

## Response `201`

Created supplier

```json
{
  "supplier": {
    "id": 1,
    "name": "…",
    "createdAt": "2026-08-10T00:00:00.000Z",
    "updatedAt": "2026-08-10T00:00:00.000Z"
  }
}
```

## Errors

| Status | Description |
|--------|-------------|
| 400 | Name required or no company selected — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Company not found — `{"error":"…"}` |

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