> ## 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.

# MessagesOutputConfigFormat - Go SDK

> MessagesOutputConfigFormat type definition

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

A schema to specify Claude's output format in responses. See [structured outputs](https://platform.claude.com/docs/en/build-with-claude/structured-outputs).

## Fields

| Field    | Type                                                                                                                     | Required             | Description |
| -------- | ------------------------------------------------------------------------------------------------------------------------ | -------------------- | ----------- |
| `Schema` | map\[string]`any`                                                                                                        | :heavy\_check\_mark: | N/A         |
| `Type`   | [components.MessagesOutputConfigTypeJSONSchema](/client-sdks/go/api-reference/models/messagesoutputconfigtypejsonschema) | :heavy\_check\_mark: | N/A         |