loom-using-git-worktrees

loom-using-git-worktrees is a skill for Claude Code, Codex from xiqin/loom. It costs 42 tokens per session (904 once invoked), scanned A, original, MIT.

A procedure for creating an isolated Git worktree and feature branch before coding. A worktree is a separate working directory connected to the same Git repository.

In plain words
What is it for?
Use it before planned implementation work to inspect repository state, create a dated feature branch, install dependencies, run baseline tests, and confirm the new workspace is ready.
Why use it?
It keeps implementation changes separate from the current workspace and checks that the project starts from a passing test baseline.

Skill for Claude CodeCodex

Part of the loom-engineering plugin — 22 skills shipped together

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/xiqin/loom/loom-using-git-worktrees
Any agent
npx skills add xiqin/loom --skill loom-using-git-worktrees
Clone the repo
git clone --depth 1 https://github.com/xiqin/loom

Made for: Claude Code, Codex.

Or install loom-engineering, the plugin that ships this one along with the rest of its 22 skills.

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 loom-using-git-worktrees

README.md
[![agentmods](https://agentmods.dev/badge/skills/xiqin/loom/loom-using-git-worktrees.svg)](https://agentmods.dev/skills/xiqin/loom/loom-using-git-worktrees)
Your own site
<a href="https://agentmods.dev/skills/xiqin/loom/loom-using-git-worktrees"><img src="https://agentmods.dev/badge/skills/xiqin/loom/loom-using-git-worktrees.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 904 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 $0.00042 $0.00904
Opus 5 $0.00021 $0.00452
Sonnet 5 $0.00008 $0.00181
Haiku 4.5 $0.00004 $0.00090

Measured 3d ago against content hash 8e4a1162c041, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

loom-using-git-worktrees 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.

skills/loom-using-git-worktrees/SKILL.md · 121 lines

What it actually says

Git 工作树隔离

核心原则

检测现有隔离 → 原生工具优先 → git worktree 作为兜底。

Step 0:检测是否已在隔离环境

在创建任何东西之前,先检查当前是否已在 worktree 中:

# 检测 worktree
git rev-parse --git-dir
git rev-parse --git-common-dir

# 如果 GIT_DIR != GIT_COMMON,已在 worktree 中
# 检测 submodule
git rev-parse --show-superproject-working-tree

如果已在隔离环境中: 跳过创建,直接使用当前环境。

执行流程

Step 1:检查当前状态

git status
  • 确认当前在正确的分支(通常为主分支)
  • 确认没有未提交的变更
  • 确认有实现计划(specs/<date+feature>/plan.mdspecs/<date+feature>/tasks/ 目录)

Step 2:创建隔离工作空间

优先使用平台原生工具:

  • 优先使用 AI 工具的工作空间管理功能
  • 其他平台:检查是否有 WorktreeCreate 类工具
  • 兜底:手动 git worktree add

目录安全: 创建前确认 worktree 目录在 .gitignore 中,防止意外提交。

分支命名规范:

feature/<date>-<feature-name>

示例:

  • feature/2026-04-26-passport-list
  • feature/2026-04-26-user-auth
# 兜底方案(原生工具不可用时)
git worktree add .worktree/<date>-<feature-name> -b feature/<date>-<feature-name>

Step 3:安装依赖并验证基线

自动检测项目类型并安装依赖,然后运行测试确保干净起点。

<读取 constitution.md 中的 TEST_CMD 并执行>
  • 依赖安装成功
  • 所有测试通过
  • 没有失败的测试

如果基线测试失败: 停止,报告问题,等用户确认是否继续。

Step 4:确认分支状态

git branch --show-current

确认分支已创建并切换成功。

分支命名规则

Git 分支命名规范

分支命名格式:feature/<date>-<feature-name>(如 feature/2025-01-15-user-auth

其他前缀:fix/<date>-<name>refactor/<date>-<name>docs/<date>-<name>

约束

  • 禁止在主分支直接开发
  • 每个功能使用独立分支
  • 分支名使用小写字母和连字符
  • 分支名应简洁明了

禁止在主分支实现

没有明确用户同意,永远不要在 main/master 分支上开始实现。

  • 禁止创建嵌套 worktree(worktree 中再建 worktree)
  • 只清理自己创建的 worktree(验证路径在 superpower 管理目录下)
  • 目录创建前必须确认 .gitignore 规则

完成条件

分支创建并验证测试基线。

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 · 121 lines · 42 tokens per session scan A 8e4a1162c041

Subscribe to this mod's changes

loom-using-git-worktrees is a skill published in the GitHub repository xiqin/loom (5 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 904 once invoked, about $0.0002 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 2026-08-31.

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