> ## 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.

# URLCitation

## Fields

| Field         | Type                                                            | Required             | Description |
| ------------- | --------------------------------------------------------------- | -------------------- | ----------- |
| `content`     | *Optional\[str]*                                                | :heavy\_minus\_sign: | N/A         |
| `end_index`   | *int*                                                           | :heavy\_check\_mark: | N/A         |
| `start_index` | *int*                                                           | :heavy\_check\_mark: | N/A         |
| `title`       | *str*                                                           | :heavy\_check\_mark: | N/A         |
| `type`        | [components.URLCitationType](../components/urlcitationtype.mdx) | :heavy\_check\_mark: | N/A         |
| `url`         | *str*                                                           | :heavy\_check\_mark: | N/A         |