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

# SendChatCompletionRequestRequest

## Example Usage

```typescript theme={null}
import { SendChatCompletionRequestRequest } from "@openrouter/sdk/models/operations";

let value: SendChatCompletionRequestRequest = {
  chatRequest: {
    messages: [
      {
        content: "You are a helpful assistant.",
        role: "system",
      },
      {
        content: "What is the capital of France?",
        role: "user",
      },
    ],
  },
};
```

## Fields

| Field                 | Type                                                   | Required             | Description                                                                                                                                                                                                 | Example                                                                                                                                                                                                                                                                                         |
| --------------------- | ------------------------------------------------------ | -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `httpReferer`         | *string*                                               | :heavy\_minus\_sign: | The app identifier should be your app's URL and is used as the primary identifier for rankings.<br />This is used to track API usage per application.<br />                                                 |                                                                                                                                                                                                                                                                                                 |
| `appTitle`            | *string*                                               | :heavy\_minus\_sign: | The app display name allows you to customize how your app appears in OpenRouter's dashboard.<br />                                                                                                          |                                                                                                                                                                                                                                                                                                 |
| `appCategories`       | *string*                                               | :heavy\_minus\_sign: | Comma-separated list of app categories (e.g. "cli-agent,cloud-agent"). Used for marketplace rankings.<br />                                                                                                 |                                                                                                                                                                                                                                                                                                 |
| `xOpenRouterMetadata` | [models.MetadataLevel](../../models/metadatalevel.mdx) | :heavy\_minus\_sign: | Opt-in to surface routing metadata on the response under `openrouter_metadata`. Defaults to `disabled`. The legacy header `X-OpenRouter-Experimental-Metadata` is also accepted for backward compatibility. | enabled                                                                                                                                                                                                                                                                                         |
| `chatRequest`         | [models.ChatRequest](../../models/chatrequest.mdx)     | :heavy\_check\_mark: | N/A                                                                                                                                                                                                         | \{<br />"max\_tokens": 150,<br />"messages": \[<br />\{<br />"content": "You are a helpful assistant.",<br />"role": "system"<br />},<br />\{<br />"content": "What is the capital of France?",<br />"role": "user"<br />}<br />],<br />"model": "openai/gpt-4",<br />"temperature": 0.7<br />} |