> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# OutputFusionServerToolItem - Python SDK

> OutputFusionServerToolItem method reference

<Warning>
  The Python SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues).
</Warning>

An openrouter:fusion server tool output item

## Fields

| Field            | Type                                                                                                                     | Required             | Description                                                                                                                                                                                                                              | Example   |
| ---------------- | ------------------------------------------------------------------------------------------------------------------------ | -------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- |
| `analysis`       | [Optional\[components.Analysis\]](../components/analysis.md)                                                             | :heavy\_minus\_sign: | Structured analysis produced by the fusion judge model.                                                                                                                                                                                  |           |
| `error`          | *Optional\[str]*                                                                                                         | :heavy\_minus\_sign: | Error message when the fusion run did not produce an analysis result.                                                                                                                                                                    |           |
| `failed_models`  | List\[[components.FailedModel](/client-sdks/python/api-reference/components/failedmodel)]                                | :heavy\_minus\_sign: | Models that were requested as part of the analysis panel but did not produce a response. Present when at least one requested analysis model failed. The fusion result is still usable but was produced from a degraded panel.            |           |
| `failure_reason` | *Optional\[str]*                                                                                                         | :heavy\_minus\_sign: | Typed failure reason when the fusion run failed. Possible values include: all\_panels\_failed, insufficient\_credits, rate\_limited, judge\_not\_valid\_json, judge\_schema\_mismatch, judge\_upstream\_error, judge\_empty\_completion. |           |
| `id`             | *Optional\[str]*                                                                                                         | :heavy\_minus\_sign: | N/A                                                                                                                                                                                                                                      |           |
| `responses`      | List\[[components.Response](/client-sdks/python/api-reference/components/response)]                                      | :heavy\_minus\_sign: | Slugs of the analysis models that produced a response in this fusion run.                                                                                                                                                                |           |
| `status`         | [components.ToolCallStatus](/client-sdks/python/api-reference/components/toolcallstatus)                                 | :heavy\_check\_mark: | N/A                                                                                                                                                                                                                                      | completed |
| `type`           | [components.OutputFusionServerToolItemType](/client-sdks/python/api-reference/components/outputfusionservertoolitemtype) | :heavy\_check\_mark: | N/A                                                                                                                                                                                                                                      |           |