> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-5b6e02fd.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# CustomToolCallInputDoneEvent - Go SDK

> CustomToolCallInputDoneEvent type definition

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

Event emitted when a custom tool call's freeform input streaming is complete. Mirrors `response.function_call_arguments.done` but for `custom` tools.

## Fields

| Field            | Type                                                                                                                 | Required             | Description |
| ---------------- | -------------------------------------------------------------------------------------------------------------------- | -------------------- | ----------- |
| `Input`          | `string`                                                                                                             | :heavy\_check\_mark: | N/A         |
| `ItemID`         | `string`                                                                                                             | :heavy\_check\_mark: | N/A         |
| `OutputIndex`    | `int64`                                                                                                              | :heavy\_check\_mark: | N/A         |
| `SequenceNumber` | `int64`                                                                                                              | :heavy\_check\_mark: | N/A         |
| `Type`           | [components.CustomToolCallInputDoneEventType](/client-sdks/go/api-reference/models/customtoolcallinputdoneeventtype) | :heavy\_check\_mark: | N/A         |