## Get lines

`GET /get-lines`

Fetch all sending lines available to your account. Pass the returned `lineId` value to `/send-api-message` when you want to force a specific line.

**Request — cURL**

```bash
curl -X GET https://api.tryprojectblue.com/get-lines \
  -H "Authorization: Bearer YOUR_API_KEY"
```

**Response — 200 OK**

```json
[
  {
    "lineId": "a3f8c2d1-b4e9-4f2a-c8d3-e1f0a2b3c4d5",
    "devicePhoneNumber": "+15559876543",
    "customName": "Main Line"
  },
  {
    "lineId": "9c2e4a1b-d3f8-4e1c-a2b4-c5d6e7f8a9b0",
    "devicePhoneNumber": "+15557654321",
    "customName": "Secondary Line"
  }
]
```

**Response — 401**

```json
{
  "error": "Missing or invalid Authorization header"
}
```