# SendChatCompletionRequestRequest


## Fields

| Field                                                                                                                                                                                                                | Type                                                                                                                                                                                                                 | Required                                                                                                                                                                                                             | Description                                                                                                                                                                                                          | Example                                                                                                                                                                                                              |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `http_referer`                                                                                                                                                                                                       | *Optional[str]*                                                                                                                                                                                                      | :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/>                                                            |                                                                                                                                                                                                                      |
| `x_open_router_title`                                                                                                                                                                                                | *Optional[str]*                                                                                                                                                                                                      | :heavy_minus_sign:                                                                                                                                                                                                   | The app display name allows you to customize how your app appears in OpenRouter's dashboard.<br/>                                                                                                                    |                                                                                                                                                                                                                      |
| `x_open_router_categories`                                                                                                                                                                                           | *Optional[str]*                                                                                                                                                                                                      | :heavy_minus_sign:                                                                                                                                                                                                   | Comma-separated list of app categories (e.g. "cli-agent,cloud-agent"). Used for marketplace rankings.<br/>                                                                                                           |                                                                                                                                                                                                                      |
| `x_open_router_metadata`                                                                                                                                                                                             | [Optional[components.MetadataLevel]](../components/metadatalevel.md)                                                                                                                                                 | :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                                                                                                                                                                                                              |
| `chat_request`                                                                                                                                                                                                       | [components.ChatRequest](../components/chatrequest.md)                                                                                                                                                               | :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/>} |