---
title: "ServerToolUse"
---

Usage for server-side tool execution (e.g., web search)


## Fields

| Field                                                                                                                                                                                                                               | Type                                                                                                                                                                                                                                | Required                                                                                                                                                                                                                            | Description                                                                                                                                                                                                                         |
| ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `tool_calls_executed`                                                                                                                                                                                                               | *OptionalNullable[int]*                                                                                                                                                                                                             | :heavy_minus_sign:                                                                                                                                                                                                                  | Number of OpenRouter server tool calls that executed and produced a result.                                                                                                                                                         |
| `tool_calls_requested`                                                                                                                                                                                                              | *OptionalNullable[int]*                                                                                                                                                                                                             | :heavy_minus_sign:                                                                                                                                                                                                                  | Total number of OpenRouter server-orchestrated tool calls the model requested, across all tool types. Provider-native tools (e.g. native web search) are not counted here.                                                          |
| `web_search_requests`                                                                                                                                                                                                               | *OptionalNullable[int]*                                                                                                                                                                                                             | :heavy_minus_sign:                                                                                                                                                                                                                  | Number of web searches performed by server-side tools. For server-orchestrated tool calls a web search is also counted in tool_calls_requested; provider-native web search may report web_search_requests only. Do not sum the two. |