---
title: "FusionCallCompletedEvent"
---

Emitted when the openrouter:fusion tool call finishes.


## Fields

| Field                                                                                    | Type                                                                                     | Required                                                                                 | Description                                                                              |
| ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- |
| `item_id`                                                                                | *str*                                                                                    | :heavy_check_mark:                                                                       | N/A                                                                                      |
| `output_index`                                                                           | *int*                                                                                    | :heavy_check_mark:                                                                       | N/A                                                                                      |
| `sequence_number`                                                                        | *int*                                                                                    | :heavy_check_mark:                                                                       | N/A                                                                                      |
| `type`                                                                                   | [components.FusionCallCompletedEventType](../components/fusioncallcompletedeventtype.mdx) | :heavy_check_mark:                                                                       | N/A                                                                                      |