Tools reference changedtools-reference
Nearest release: v2.1.233, published under an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
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5151| `TaskOutput` | Retrieves output from a background task. Deprecated in favor of `Read` on the task's output file path. When no task matches the ID, the error lists the running background agents by ID and description. Before v2.1.203, the error named only the missing ID | No |
5252| `TaskStop` | Stops a running background task by ID. It also accepts an [agent-team teammate](/docs/en/agent-teams) or a named background agent by agent ID or name. Before v2.1.198, it accepted only a background task ID. When no task matches the ID, the error lists the running background agents by ID and description, including agents that another agent spawned. Before v2.1.203, the error listed running teammates and named agents but not background agents another agent spawned, so those couldn't be identified or stopped from the main conversation | No |
5353| `TaskUpdate` | Updates task status, dependencies, details, or deletes tasks | No |
54| `TodoWrite` | Manages the session task checklist. Disabled by default as of v2.1.142 in favor of `TaskCreate`, `TaskGet`, `TaskList`, and `TaskUpdate`. Set `CLAUDE_CODE_ENABLE_TASKS=0` to re-enable | No |
54| `TodoWrite` | Manages the session task checklist. Disabled by default in favor of `TaskCreate`, `TaskGet`, `TaskList`, and `TaskUpdate`. Set `CLAUDE_CODE_ENABLE_TASKS=0` to re-enable | No |
5555| `ToolSearch` | Searches for and loads deferred tools when [tool search](/docs/en/mcp#scale-with-mcp-tool-search) is enabled | No |
5656| `WaitForMcpServers` | Waits for one or more [MCP servers](/docs/en/mcp) that are still connecting in the background, so a request can use their tools without restarting the session. Claude calls it when a needed server isn't connected yet. Only appears when [tool search](/docs/en/mcp#scale-with-mcp-tool-search) is disabled, since `ToolSearch` handles the wait when it's enabled | No |
5757| `WebFetch` | Fetches content from a specified URL. See [WebFetch tool behavior](#webfetch-tool-behavior) | Yes |
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