tool-reference changedagents-and-tools/tool-use/tool-reference
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1111Anthropic provides two kinds of tools: **server tools** that execute on Anthropic's infrastructure, and **client tools** where Anthropic defines the schema but your application handles execution. Both kinds appear in your request's `tools` array alongside any user-defined tools.
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13| Tool | `type` | Execution | [Beta header](https://platform.claude.com/docs/en/api/beta-headers) |
14| -------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------- | --------- | ------------------------------------------------------------------- |
15| [Web search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool) | `web_search_20260318` `web_search_20260209` `web_search_20250305` | Server | None |
16| [Web fetch tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-fetch-tool) | `web_fetch_20260318` `web_fetch_20260309` `web_fetch_20260209` `web_fetch_20250910` | Server | None |
17| [Code execution tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool) | `code_execution_20260521` `code_execution_20260120` `code_execution_20250825` | Server | None |
18| [Advisor tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool) | `advisor_20260301` | Server | `advisor-tool-2026-03-01` |
19| [Tool search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-search-tool) | `tool_search_tool_regex_20251119` `tool_search_tool_bm25_20251119` | Server | None |
20| [MCP connector](https://platform.claude.com/docs/en/agents-and-tools/mcp-connector) | `mcp_toolset` | Server | `mcp-client-2025-11-20` |
21| [Memory tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/memory-tool) | `memory_20250818` | Client | None |
22| [Bash tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/bash-tool) | `bash_20250124` | Client | None |
23| [Text editor tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/text-editor-tool) | `text_editor_20250728` `text_editor_20250124` | Client | None |
24| [Computer use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool) | `computer_toolset_20260801` `computer_20251124` `computer_20250124` | Client | None `computer-use-2025-11-24` `computer-use-2025-01-24` |
25| [Browser use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool) | `browser_toolset_20260801` | Client | None |
13| Tool | `type` | Execution | [Beta header](https://platform.claude.com/docs/en/api/beta-headers) |
14| -------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- | --------- | ------------------------------------------------------------------- |
15| [Web search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool) | `web_search_20260318`<br />`web_search_20260209`<br />`web_search_20250305` | Server | None |
16| [Web fetch tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-fetch-tool) | `web_fetch_20260318`<br />`web_fetch_20260309`<br />`web_fetch_20260209`<br />`web_fetch_20250910` | Server | None |
17| [Code execution tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool) | `code_execution_20260521`<br />`code_execution_20260120`<br />`code_execution_20250825` | Server | None |
18| [Advisor tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool) | `advisor_20260301` | Server | `advisor-tool-2026-03-01` |
19| [Tool search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-search-tool) | `tool_search_tool_regex_20251119`<br />`tool_search_tool_bm25_20251119` | Server | None |
20| [MCP connector](https://platform.claude.com/docs/en/agents-and-tools/mcp-connector) | `mcp_toolset` | Server | `mcp-client-2025-11-20` |
21| [Memory tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/memory-tool) | `memory_20250818` | Client | None |
22| [Bash tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/bash-tool) | `bash_20250124` | Client | None |
23| [Text editor tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/text-editor-tool) | `text_editor_20250728`<br />`text_editor_20250124` | Client | None |
24| [Computer use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool) | `computer_toolset_20260801`<br />`computer_20251124`<br />`computer_20250124` | Client | None<br />`computer-use-2025-11-24`<br />`computer-use-2025-01-24` |
25| [Browser use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool) | `browser_toolset_20260801` | Client | None |
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2727For model compatibility, see each tool's page. Supported models vary by tool and by tool version. To check from your code whether a model accepts web search or code execution, see [Using the Models API](https://platform.claude.com/docs/en/models/overview#using-the-models-api).
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