# OpenResponsesStreamEventResponseContentPartAdded

Event emitted when a new content part is added to an output item


## Fields

| Field                                                                                    | Type                                                                                     | Required                                                                                 | Description                                                                              |
| ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- |
| `type`                                                                                   | [components.TypeResponseContentPartAdded](../components/typeresponsecontentpartadded.md) | :heavy_check_mark:                                                                       | N/A                                                                                      |
| `output_index`                                                                           | *float*                                                                                  | :heavy_check_mark:                                                                       | N/A                                                                                      |
| `item_id`                                                                                | *str*                                                                                    | :heavy_check_mark:                                                                       | N/A                                                                                      |
| `content_index`                                                                          | *float*                                                                                  | :heavy_check_mark:                                                                       | N/A                                                                                      |
| `part`                                                                                   | [components.Part1](../components/part1.md)                                               | :heavy_check_mark:                                                                       | N/A                                                                                      |
| `sequence_number`                                                                        | *float*                                                                                  | :heavy_check_mark:                                                                       | N/A                                                                                      |