## List groups

**get** `/v1/groups`

Returns a paginated list of groups belonging to the authenticated organization.

### Query Parameters

- `limit: optional number`

  Items per page (default: 20, max: 100)

- `page: optional number`

  Page number (default: 1)

### Returns

- `data: array of Group`

  - `id: string`

    Prefixed group identifier (`grp_<base64-encoded-uuid>`).

  - `created_at: string`

    Group creation timestamp (ISO 8601, UTC).

  - `external_reference_id: string`

    Stable identifier for this group in the integrator's own system.

  - `name: string`

    Human-readable group name.

  - `organization_id: string`

    Prefixed organization identifier (`org_<base64-encoded-uuid>`).

  - `updated_at: string`

    Last-update timestamp (ISO 8601, UTC).

- `pagination: Pagination`

  Pagination metadata for list responses.

  - `limit: number`

    Items per page

  - `page: number`

    Current page number

  - `total: number`

    Total number of items

  - `total_pages: number`

    Total number of pages

### Example

```http
curl https://api.vitablehealth.com/v1/groups \
    -H "Authorization: Bearer $VITABLE_CONNECT_API_KEY"
```

#### Response

```json
{
  "data": [
    {
      "id": "grp_abc123def456",
      "organization_id": "org_abc123def456",
      "name": "Tier 1",
      "external_reference_id": "mol_seg_001",
      "created_at": "2026-01-15T10:30:00Z",
      "updated_at": "2026-01-15T10:30:00Z"
    }
  ],
  "pagination": {
    "page": 1,
    "limit": 20,
    "total": 1,
    "total_pages": 1
  }
}
```