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2929| `ExitWorktree` | Exits a worktree session and returns to the original directory. Not available to subagents that already run in their own working directory, such as with [`isolation: worktree`](/docs/en/sub-agents#supported-frontmatter-fields) | No |
3030| `Glob` | Finds files based on pattern matching. Absent by default on macOS, Linux, and WSL. See [Glob tool behavior](#glob-tool-behavior) | No |
3131| `Grep` | Searches for patterns in file contents. Absent by default on macOS, Linux, and WSL. See [Grep tool behavior](#grep-tool-behavior) | No |
32| `ListAgents` | Lists the agents Claude can message with `SendMessage`: subagents in the session, [agent team](/docs/en/agent-teams) teammates, your other local Claude Code sessions, and, while this session is connected to [Remote Control](/docs/en/remote-control), your [Claude Code on the web](/docs/en/claude-code-on-the-web) sessions and your Remote Control sessions on other machines. Backs the `/list-agents` command. See [cross-session messaging](/docs/en/cross-session-messaging). Requires Claude Code v2.1.224 or later, and appears only in sessions where [cross-session messaging is enabled](/docs/en/cross-session-messaging#availability). Teammate rows and the first line showing this session's own name require v2.1.239 or later | No |
32| `ListAgents` | Lists the agents Claude can message with `SendMessage`: subagents in the session, [agent team](/docs/en/agent-teams) teammates, your other local Claude Code sessions, and, while this session is connected to [Remote Control](/docs/en/remote-control), your [cloud sessions](/docs/en/claude-code-on-the-web) and your Remote Control sessions on other machines. Backs the `/list-agents` command. See [cross-session messaging](/docs/en/cross-session-messaging). Requires Claude Code v2.1.224 or later, and appears only in sessions where [cross-session messaging is enabled](/docs/en/cross-session-messaging#availability). Teammate rows and the first line showing this session's own name require v2.1.239 or later | No |
3333| `ListMcpResourcesTool` | Lists resources exposed by connected [MCP servers](/docs/en/mcp) | No |
3434| `LSP` | Code intelligence via language servers: jump to definitions, find references, report type errors and warnings. See [LSP tool behavior](#lsp-tool-behavior) | No |
3535| `Monitor` | Runs a command in the background and feeds each output line back to Claude, so it can react to log entries, file changes, or polled status mid-conversation. Can also open a WebSocket and treat each incoming message as an event. See [Monitor tool](#monitor-tool) | Yes |
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4343| `ScheduleWakeup` | Reschedules the next iteration of a [self-paced `/loop`](/docs/en/scheduled-tasks#let-claude-choose-the-interval). Claude calls this at the end of each iteration to pick when the next one runs, between one minute and one hour out; you don't call it directly. To end the loop instead, Claude calls it with `stop: true`, which cancels the pending wakeup. The `stop` field requires Claude Code v2.1.202 or later. The pending wakeup appears in `session_crons` in [Stop hook input](/docs/en/hooks#stop-input) | No |
4444| `SendFeedback` | Drafts a feedback report about Claude Code, covering a product problem or Claude's own behavior in the session, and queues it on your machine for you to review. Claude Code sends nothing until you choose to send the draft. See [SendFeedback tool behavior](#sendfeedback-tool-behavior). Requires Claude Code v2.1.238 or later | No |
4545| `SendMessage` | Sends a message to another agent: an [agent team](/docs/en/agent-teams) teammate, a [subagent it resumes](/docs/en/sub-agents#resume-subagents) by agent ID or name, or one of your other Claude Code sessions, on this machine or beyond it. Messaging other sessions requires Claude Code v2.1.224 or later. [Cross-session messaging](/docs/en/cross-session-messaging) covers which sessions Claude can reach, [what a message looks like when it arrives](/docs/en/cross-session-messaging#what-a-message-looks-like), and [how Claude gets a notice when another session goes idle](/docs/en/cross-session-messaging#get-a-notice-when-another-session-goes-idle). Claude can include an optional `summary` input, typically 5-10 words, that Claude Code shows as a one-line preview. When Claude omits it on a [plain-text message](/docs/en/cross-session-messaging#limitations), Claude Code uses the first line of the message as the summary. Claude Code truncates a summary longer than 200 characters with an ellipsis | No |
46| `SendUserFile` | Sends files from the session to you with an optional caption, so a generated report, diagram, screenshot, or built artifact reaches your device instead of only being mentioned in the transcript. As of v2.1.196, the optional `display` input controls presentation: `render` opens the file inline in the client, `attach` shows a download card only, and when unset the client decides by file type. Available when a [Remote Control](/docs/en/remote-control) client is connected or the session runs in a managed cloud environment such as [Claude Code on the web](/docs/en/claude-code-on-the-web). Delivery runs through Anthropic-hosted infrastructure, so the tool is not available on Amazon Bedrock, Google Cloud's Agent Platform, or Microsoft Foundry | No |
46| `SendUserFile` | Sends files from the session to you with an optional caption, so a generated report, diagram, screenshot, or built artifact reaches your device instead of only being mentioned in the transcript. As of v2.1.196, the optional `display` input controls presentation: `render` opens the file inline in the client, `attach` shows a download card only, and when unset the client decides by file type. Available when a [Remote Control](/docs/en/remote-control) client is connected or in a [cloud session](/docs/en/claude-code-on-the-web). Delivery runs through Anthropic-hosted infrastructure, so the tool is not available on Amazon Bedrock, Google Cloud's Agent Platform, or Microsoft Foundry | No |
4747| `ShareOnboardingGuide` | Uploads `ONBOARDING.md` and returns a share link teammates can open in Claude Code. Called from `/team-onboarding` after the guide is written. Available to claude.ai subscribers on Pro, Max, Team, and Enterprise plans | Yes |
4848| `Skill` | Executes a [skill](/docs/en/skills#control-who-invokes-a-skill) within the main conversation | Yes |
49| `SubagentHandback` | Delivers a subagent's final report to whichever conversation receives that subagent's result. Provided only in [auto mode](/docs/en/permission-modes#eliminate-prompts-with-auto-mode), to subagents that the Agent tool runs locally other than [forks](/docs/en/sub-agents#fork-the-current-conversation), and available in the terminal CLI, IDE extensions, web sessions, and the Agent SDK; the classifier reviews the report before it's delivered. Requires Claude Code v2.1.271 or later | No |
49| `SubagentHandback` | Delivers a subagent's final report to whichever conversation receives that subagent's result. Provided only in [auto mode](/docs/en/permission-modes#eliminate-prompts-with-auto-mode), to subagents that the Agent tool runs locally other than [forks](/docs/en/sub-agents#fork-the-current-conversation), and available in the terminal CLI, IDE extensions, cloud sessions, and the Agent SDK; the classifier reviews the report before it's delivered. Requires Claude Code v2.1.271 or later | No |
5050| `TaskCreate` | Creates a new task in the task list. Provided by default only on the models listed under [Task tool availability](#task-tool-availability), and on other models when you opt in | No |
5151| `TaskGet` | Retrieves full details for a specific task. Provided by default only on the models listed under [Task tool availability](#task-tool-availability), and on other models when you opt in | No |
5252| `TaskList` | Lists all tasks with their current status. Provided by default only on the models listed under [Task tool availability](#task-tool-availability), and on other models when you opt in | No |
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250250 * sessions through the [Agent SDK](/docs/en/agent-sdk/overview) TypeScript and Python packages
251251 * the [VS Code extension](/docs/en/vs-code) panel, which bundles its own CLI
252252 * [GitHub Actions](/docs/en/github-actions)
253 * [Claude Code on the web](/docs/en/claude-code-on-the-web)
253 * [cloud sessions](/docs/en/claude-code-on-the-web)
254254* **Startup mode**: not a [`--bare`](/docs/en/headless#start-faster-with-bare-mode) session. Bare mode loads only shell and file tools, so the tool is never registered there.
255255* **Provider**: not available on [Amazon Bedrock](/docs/en/amazon-bedrock), [Claude Platform on AWS](/docs/en/claude-platform-on-aws), [Google Cloud's Agent Platform](/docs/en/google-vertex-ai), or [Microsoft Foundry](/docs/en/microsoft-foundry), or on sessions signed in through a [cloud gateway](/docs/en/claude-apps-gateway).
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512512Claude Code includes the tool in interactive terminal sessions on your own machine that use the Claude API rather than a cloud provider. It leaves the tool out of:
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514514* Non-interactive `-p` runs and [Agent SDK](/docs/en/agent-sdk/overview) sessions, which have no screen to review the queue on
515* Cloud sessions such as [Claude Code on the web](/docs/en/claude-code-on-the-web), which can't write to the queue on your machine
515* [Cloud sessions](/docs/en/claude-code-on-the-web), which can't write to the queue on your machine
516516* Sessions on [Amazon Bedrock](/docs/en/amazon-bedrock), [Claude Platform on AWS](/docs/en/claude-platform-on-aws), [Google Cloud's Agent Platform](/docs/en/google-vertex-ai), or [Microsoft Foundry](/docs/en/microsoft-foundry)
517517* Sessions where you set [`CLAUDE_CODE_SEND_FEEDBACK=0`](/docs/en/env-vars) or [`DISABLE_FEEDBACK_COMMAND=1`](/docs/en/env-vars), set `CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC` to any non-empty value, or turned off [feature-flag fetching](/docs/en/env-vars#features-that-need-feature-flag-fetching)
518518* Organizations that have turned off product feedback, and [organizations with zero data retention](/docs/en/zero-data-retention#features-disabled-under-zdr)
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530530* List the tools in [`--tools`](/docs/en/cli-reference#cli-flags), which restricts the session's built-in tools to the ones it names. Include the tools you want alongside the other built-in tools you use
531531* In the Agent SDK, the [`allowedTools` and `tools` options](/docs/en/agent-sdk/todo-tracking#model-availability) work the same way as the two flags
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533In [background sessions](/docs/en/agent-view) and in [Claude Code on the web](/docs/en/claude-code-on-the-web), Claude Code provides the same tools on every model, listed or not.
533In [background sessions](/docs/en/agent-view) and in [cloud sessions](/docs/en/claude-code-on-the-web), Claude Code provides the same tools on every model, listed or not.
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535535Claude Code gives a subagent the tools only when your session has them, even when the subagent runs a different model. An in-process [agent team](/docs/en/agent-teams) teammate follows your session the same way, while a teammate in its own [split pane](/docs/en/agent-teams#choose-a-display-mode) runs as a separate Claude Code process, so its own model decides. Without the Task tools, an agent coordinates with its team through messages instead of the [shared task list](/docs/en/agent-teams#assign-and-claim-tasks).
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