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HomeDocsClaude Code CLI 13 Oct 2026
One change · claude-code

Agent SDK reference - TypeScript changedagent-sdk/typescript

Nearest release: v2.1.299, published 20 hours after upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 13 Oct 2026 04:17 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 13 Oct 2026 04:37 UTC.

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First seen 14 Aug 2026 this site's first read of the page
Recorded edits113to this page, all time

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33013301Creates and manages a structured task list for tracking progress.
33023302 
33033303<Note>
3304 The following tools are available by default only on Claude 3.x models, Opus 4 through 4.7, Sonnet 4 through 4.6, and Haiku 4.5. On every other model, including model IDs Claude Code doesn't recognize, they aren't available unless you opt in:
3304 The following tools are available by default only on Claude Opus 4.7, Claude Sonnet 4.6, Claude Haiku 4.5, and earlier models. On every other model, including model IDs Claude Code doesn't recognize, they aren't available unless you opt in:
33053305 
33063306 * `TodoWrite`
33073307 * `TaskCreate`
from line 4253
42534253Returns the previous and updated task lists.
42544254 
42554255<Note>
4256 The following tools are available by default only on Claude 3.x models, Opus 4 through 4.7, Sonnet 4 through 4.6, and Haiku 4.5. On every other model, including model IDs Claude Code doesn't recognize, they aren't available unless you opt in:
4256 The following tools are available by default only on Claude Opus 4.7, Claude Sonnet 4.6, Claude Haiku 4.5, and earlier models. On every other model, including model IDs Claude Code doesn't recognize, they aren't available unless you opt in:
42574257 
42584258 * `TodoWrite`
42594259 * `TaskCreate`
from line 5285
52855285 hook_id: string;
52865286 hook_name: string;
52875287 hook_event: string;
5288 uuid:
5288 uuid: UUID
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