> ## 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.

# Server

## Fields

| Field | Type | Required | Description |
| - | - | - | - |
| `host` | *Nullable\[str]* | ✅ | N/A |
| `surface` | *str* | ✅ | N/A |
| `transport` | *str* | ✅ | N/A |
| `url` | *Nullable\[str]* | ✅ | N/A |