> ## 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. # GetModelRequest ## Example Usage ```typescript theme={null} import { GetModelRequest } from "@openrouter/sdk/models/operations"; let value: GetModelRequest = { author: "openai", slug: "gpt-4", }; ``` ## 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.
This is used to track API usage per application.
| | | `appTitle` | *string* | :heavy\_minus\_sign: | The app display name allows you to customize how your app appears in OpenRouter's dashboard.
| | | `appCategories` | *string* | :heavy\_minus\_sign: | Comma-separated list of app categories (e.g. "cli-agent,cloud-agent"). Used for marketplace rankings.
| | | `author` | *string* | :heavy\_check\_mark: | The author/organization of the model | openai | | `slug` | *string* | :heavy\_check\_mark: | The model slug, optionally including a variant suffix (e.g. gpt-4 or gpt-4:free) | gpt-4 |