> ## 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.

# ServerToolPrice

## Fields

| Field | Type | Required | Description | Example |
| - | - | - | - | - |
| `max_units_per_call` | *int* | ✔️ | N/A | |
| `mode` | *Nullable\[str]* | ✔️ | The `parameters.mode` this price applies to; null for prices that do not depend on the mode. A request bills exactly one `request` row | auto |
| `price` | *str* | ✔️ | USD per unit, as a decimal string | 0.007 |
| `unit` | *str* | ✔️ | N/A | request |