Tools reference changedtools-reference
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197197* `mcp`: local [MCP servers](/docs/en/mcp)
198198* `lsp`: [language servers](#lsp-tool-behavior)
199199* `hooks`: [hook](/docs/en/hooks) commands
200* `plugin`: commands that [plugins](/docs/en/plugins) run
200* `plugin`: commands that [plugins](/docs/en/plugins/overview) run
201201* `helper`: Claude Code's own helper commands, such as `git`
202202* `agent`: child Claude Code processes, such as [agent teammates](/docs/en/agent-teams)
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310310* Find implementations of an interface
311311* Trace call hierarchies
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313Claude Code keeps the tool inactive until you install a [code intelligence plugin](/docs/en/discover-plugins#code-intelligence) for your language. In [cloud sessions](/docs/en/claude-code-on-the-web), Claude Code doesn't start plugin language servers, so the LSP tool stays inactive there. Claude Code takes the language server's configuration from the plugin, and you install the server binary yourself.
313Claude Code keeps the tool inactive until you install a [code intelligence plugin](/docs/en/plugins/code-intelligence) for your language. In [cloud sessions](/docs/en/claude-code-on-the-web), Claude Code doesn't start plugin language servers, so the LSP tool stays inactive there. Claude Code takes the language server's configuration from the plugin, and you install the server binary yourself.
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315315Claude Code returns an error result for each LSP call on a file whose language server it can't start.
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341341The tool is not available on Amazon Bedrock, Google Cloud's Agent Platform, or Microsoft Foundry. It is also not available when `DISABLE_TELEMETRY` or `CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC` is set.
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343Plugins can declare monitors that start automatically when the plugin is active, instead of asking Claude to start them. See [plugin monitors](/docs/en/plugins-reference#monitors).
343Plugins can declare monitors that start automatically when the plugin is active, instead of asking Claude to start them. See [plugin monitors](/docs/en/plugins/components#monitors).
344344
345345### WebSocket source
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