web-search-tool changedagents-and-tools/tool-use/web-search-tool
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2929For model support, see the [Tool reference](https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-reference).
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31To check whether a model accepts web search before you send a request, read its `capabilities.server_tools.web_search.supported` value from the Models API. [Using the Models API](https://platform.claude.com/docs/en/models/overview#using-the-models-api) describes the field.
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3133## How web search works
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3335When you add the web search tool to your API request:
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