> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-a46887cf.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# OutputFusionServerToolItem - Go SDK

> OutputFusionServerToolItem type definition

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

An openrouter:fusion server tool output item

## Fields

| Field           | Type                                                                                                             | Required             | Description                                                                                                                                                                                                                              | Example   |
| --------------- | ---------------------------------------------------------------------------------------------------------------- | -------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- |
| `Analysis`      | [\*components.Analysis](/client-sdks/go/api-reference/models/analysis)                                           | :heavy\_minus\_sign: | Structured analysis produced by the fusion judge model.                                                                                                                                                                                  |           |
| `Error`         | `*string`                                                                                                        | :heavy\_minus\_sign: | Error message when the fusion run did not produce an analysis result.                                                                                                                                                                    |           |
| `FailedModels`  | \[][components.FailedModel](/client-sdks/go/api-reference/models/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.            |           |
| `FailureReason` | `*string`                                                                                                        | :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`            | `*string`                                                                                                        | :heavy\_minus\_sign: | N/A                                                                                                                                                                                                                                      |           |
| `Responses`     | \[][components.Response](/client-sdks/go/api-reference/models/response)                                          | :heavy\_minus\_sign: | Slugs of the analysis models that produced a response in this fusion run.                                                                                                                                                                |           |
| `Status`        | [components.ToolCallStatus](/client-sdks/go/api-reference/models/toolcallstatus)                                 | :heavy\_check\_mark: | N/A                                                                                                                                                                                                                                      | completed |
| `Type`          | [components.OutputFusionServerToolItemType](/client-sdks/go/api-reference/models/outputfusionservertoolitemtype) | :heavy\_check\_mark: | N/A                                                                                                                                                                                                                                      |           |