worktree

worktree is a skill for Claude Code, Codex from adrielp/ai-engineering-harness. It costs 52 tokens per session (1,083 once invoked), scanned A, original, Apache-2.0.

A skill for managing git worktrees, which are separate working directories connected to different branches of the same repository.

In plain words
What is it for?
Use it to create isolated workspaces and branches for tickets or features, check active worktrees, or clean them up.
Why use it?
It lets developers work on multiple features or tickets in parallel without mixing their files and changes.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/adrielp/ai-engineering-harness/worktree
Any agent
npx skills add adrielp/ai-engineering-harness --skill worktree
Clone the repo
git clone --depth 1 https://github.com/adrielp/ai-engineering-harness

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for worktree

README.md
[![agentmods](https://agentmods.dev/badge/skills/adrielp/ai-engineering-harness/worktree.svg)](https://agentmods.dev/skills/adrielp/ai-engineering-harness/worktree)
Your own site
<a href="https://agentmods.dev/skills/adrielp/ai-engineering-harness/worktree"><img src="https://agentmods.dev/badge/skills/adrielp/ai-engineering-harness/worktree.svg" alt="Measured on agentmods" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,083 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00052 $0.01083
Opus 5 $0.00026 $0.00541
Sonnet 5 $0.00010 $0.00217
Haiku 4.5 $0.00005 $0.00108

Measured 3d ago against content hash efa4958d339d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

worktree scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

claude/skills/worktree/SKILL.md · 129 lines

How it starts

The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Git Worktree Manager

When to Use This Skill

Activate when the user:

  • Invokes /worktree directly
  • Mentions "worktree(s)" in any context
  • Wants to "work on this in parallel" or "work on multiple things"
  • Asks for an "isolated workspace" or "separate workspace"
  • Says "clean up worktrees" or "what am I working on"

Do NOT activate when:

  • User is doing normal branch switching (git checkout, git switch)
  • No indication they need parallel workspaces

Conventions

Branch naming:

  • Ticket path → strip dir + .md, prefix feature/: thoughts/shared/tickets/add-auth.mdfeature/add-auth
  • Plain name → prefix feature/ unless already prefixed (fix/, chore/, etc.)

Worktree location: <repo-root>/../<repo-name>-worktrees/<branch-name> (sibling dir, outside main repo)

Default branch detection — never hardcode main:

DEFAULT_BRANCH=$(git symbolic-ref refs/remotes/origin/HEAD 2>/dev/null | sed 's|refs/remotes/origin/||') || DEFAULT_BRANCH="main"

Subcommand Dispatch

Parse the first argument. If none provided or intent is unclear, print:

/worktree create <name|ticket-path>  — Create worktree + branch
/worktree list                       — All worktrees with dirty status
/worktree status                     — Detailed view (commits, ahead/behind)
/worktree remove <name>              — Remove with safety checks

Examples:
  /worktree create auth-refactor
  /worktree create thoughts/shared/tickets/add-auth.md

When auto-triggered (no explicit subcommand), infer intent from context. If ambiguous, ask one clarifying question.


create

  1. Resolve branch name using naming conventions above. If argument is a ticket path, read the ticket for context.

  2. Check conflicts — run in parallel:

    git branch --list "<branch-name>"
    git worktree list
    

    If branch exists but has no worktree → offer git worktree add <path> <existing-branch> (no -b). If worktree already exists at path → show its location, ask if user wants to cd there instead.

Read the full file on GitHub · 129 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 129 lines · 52 tokens per session scan A efa4958d339d

Subscribe to this mod's changes

worktree is a skill published in the GitHub repository adrielp/ai-engineering-harness (20 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 52 tokens to every session and 1,083 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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