## Create a custom field group

`POST https://getkollek.com/api/collection-types/{collectionType}/custom-field-groups`

Create a custom field group on a collection type. The group is appended after the existing ones. To place a field inside it, pass its ID as group_id when creating the custom field.

**Permissions:** Owners and editors. Viewers get a 404 response.

### Path parameters

- `collectionType` (integer, required): The ID of the collection type the group belongs to.

### Body parameters

- `name` (string, optional): The name of the group. Maximum 255 characters.

**Returns:** The created custom_field_group object.

### Example request

```bash
curl https://getkollek.com/api/collection-types/1/custom-field-groups \
  -X POST \
  -H "Authorization: Bearer $API_KEY" \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Publishing info"
}'
```

### Example response

`Status: 201`

```json
{
    "data": {
        "type": "custom_field_group",
        "id": "1",
        "attributes": {
            "name": "Publishing info",
            "position": 1,
            "created_at": 1752537600,
            "updated_at": 1752537600
        },
        "links": {
            "self": "https://getkollek.com/api/collection-types/1/custom-field-groups/1"
        }
    }
}
```