A skill for creating an isolated Git worktree, which is a separate working copy of a repository for parallel development.

Use it to create a branch and separate worktree for tasks in single repositories or monorepos, which contain multiple related projects.

It lets developers work on another feature or fix without disturbing the files and branch in their current working copy.

ck:worktree — Skill for Claude Code by manhvann

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.

Any agent

npx skills add manhvann/codexkit --skill worktree

Clone the repo

git clone --depth 1 https://github.com/manhvann/codexkit

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/manhvann/codexkit/worktree.svg)](https://agentmods.dev/skills/manhvann/codexkit/worktree)

Your own site

<a href="https://agentmods.dev/skills/manhvann/codexkit/worktree"><img src="https://agentmods.dev/badge/skills/manhvann/codexkit/worktree.svg" alt="Measured on agentmods" height="20"></a>

Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 757 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00018	$0.00757
Opus 5	$0.00009	$0.00378
Sonnet 5	$0.00004	$0.00151
Haiku 4.5	$0.00002	$0.00076

Measured 4d ago against content hash 279a891a0e78, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

ck: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 4d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/worktree.cjs, scripts/worktree.test.cjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.agents/skills/worktree/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Git Worktree

Create an isolated git worktree for parallel feature development.

Workflow

Step 1: Get Repo Info

node .agents/skills/worktree/scripts/worktree.cjs info --json

Parse JSON response for: repoType, baseBranch, projects, worktreeRoot, worktreeRootSource.

Step 2: Detect Branch Prefix

From user's description:

"fix", "bug", "error", "issue" → fix
"refactor", "restructure", "rewrite" → refactor
"docs", "documentation", "readme" → docs
"test", "spec", "coverage" → test
"chore", "cleanup", "deps" → chore
"perf", "performance", "optimize" → perf
Default → feat

Step 3: Convert to Slug

"add authentication system" → add-auth "fix login bug" → login-bug Max 50 chars, kebab-case.

Step 4: Handle Monorepo

If repoType === "monorepo" and project not specified, use ask the user:

ask the user({
  questions: [{
    header: "Project",
    question: "Which project for the worktree?",
    options: projects.map(p => ({ label: p.name, description: p.path })),
    multiSelect: false
  }]
})

Step 5: Execute

Monorepo:

node .agents/skills/worktree/scripts/worktree.cjs create "<PROJECT>" "<SLUG>" --prefix <TYPE>

Standalone:

node .agents/skills/worktree/scripts/worktree.cjs create "<SLUG>" --prefix <TYPE>

Options:

--prefix - Branch type: feat|fix|refactor|docs|test|chore|perf
--worktree-root <path> - Override default location (only if needed)
--json - JSON output
--dry-run - Preview

Step 6: Install Dependencies

Based on project context, run in background:

bun.lock → bun install
pnpm-lock.yaml → pnpm install
yarn.lock → yarn install
package-lock.json → npm install
poetry.lock → poetry install
requirements.txt → pip install -r requirements.txt
Cargo.toml → cargo build
go.mod → go mod download

Commands

Command	Usage	Description
`create`	`create [project] <feature>`	Create worktree
`remove`	`remove <name-or-path>`	Remove worktree
`info`	`info`	Repo info with worktree location
`list`	`list`	List worktrees

Read the full file on GitHub · 97 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

4d ago First seen · 97 lines · 18 tokens per session scan A 279a891a0e78

Subscribe to this mod's changes

ck:worktree is a skill published in the GitHub repository manhvann/codexkit (88 stars, last pushed 9d ago), licensed MIT. It adds 18 tokens to every session and 757 once invoked, about $0.0001 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 2026-09-03.

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