> ## 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.

# SendChatCompletionRequestRequest - Go SDK

> SendChatCompletionRequestRequest type definition

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

## Fields

| Field                             | Type                                                                             | Required             | Description                                                                                             | Example                                                                                                                                                                                                                                  |
| --------------------------------- | -------------------------------------------------------------------------------- | -------------------- | ------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `XOpenRouterExperimentalMetadata` | [\*components.MetadataLevel](/client-sdks/go/api-reference/models/metadatalevel) | :heavy\_minus\_sign: | Opt-in to surface routing metadata on the response under `openrouter_metadata`. Defaults to `disabled`. | enabled                                                                                                                                                                                                                                  |
| `ChatRequest`                     | [components.ChatRequest](/client-sdks/go/api-reference/models/chatrequest)       | :heavy\_check\_mark: | N/A                                                                                                     | `{"max_tokens": 150,"messages": [{"content": "You are a helpful assistant.","role": "system"}`,<br />`{"content": "What is the capital of France?","role": "user"}`<br />],<br />"model": "openai/gpt-4",<br />"temperature": 0.7<br />} |