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Sweep 28 Aug 2026 · 16:06Z Build v2.1.251 479 read Stable v2.1.236 Latest v2.1.251 Next v2.1.251 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Prompt capture

EnterWorktree tool description

27 model strings share this prompt, byte for byte.

v2.1.153 34 lines 2329 chars sha256 567d86fd6a09 Plain text Whole capture

This renders the markdown inside the description, so it isn't quite the description itself. The raw view and the plain text are the bytes as they were sent.

Use this tool ONLY when explicitly instructed to work in a worktree — either by the user directly, or by project instructions (CLAUDE.md / memory). This tool creates an isolated git worktree and switches the current session into it.

When to Use

  • The user explicitly says "worktree" (e.g., "start a worktree", "work in a worktree", "create a worktree", "use a worktree")
  • CLAUDE.md or memory instructions direct you to work in a worktree for the current task

When NOT to Use

  • The user asks to create a branch, switch branches, or work on a different branch — use git commands instead
  • The user asks to fix a bug or work on a feature — use normal git workflow unless worktrees are explicitly requested by the user or project instructions
  • Never use this tool unless "worktree" is explicitly mentioned by the user or in CLAUDE.md / memory instructions

Requirements

  • Must be in a git repository, OR have WorktreeCreate/WorktreeRemove hooks configured in settings.json
  • Must not already be in a worktree

Behavior

  • In a git repository: creates a new git worktree inside .claude/worktrees/ on a new branch. The base ref is governed by the worktree.baseRef setting: fresh (default) branches from origin/<default-branch>; head branches from your current local HEAD
  • Outside a git repository: delegates to WorktreeCreate/WorktreeRemove hooks for VCS-agnostic isolation
  • Switches the session's working directory to the new worktree
  • Use ExitWorktree to leave the worktree mid-session (keep or remove). On session exit, if still in the worktree, the user will be prompted to keep or remove it

Entering an existing worktree

Pass path instead of name to switch the session into a worktree that already exists (e.g., one you just created with git worktree add). The path must appear in git worktree list for the current repository — paths that are not registered worktrees of this repo are rejected. ExitWorktree will not remove a worktree entered this way; use action: "keep" to return to the original directory.

Parameters

  • name (optional): A name for a new worktree. If neither name nor path is provided, a random name is generated.
  • path (optional): Path to an existing worktree of the current repository to enter instead of creating one. Mutually exclusive with name.