Git Expert

Git Expert is a skill for Claude Code, Codex from ahmadrrrtx/xr. It costs 23 tokens per session (323 once invoked), scanned A, a copy of Architecture Reviewer, MIT.

A guide for working with Git, the version-control system used to record code changes and collaborate safely. It applies general engineering practices such as preserving interfaces and checking work.

In plain words
What is it for?
Use it to plan Git-related tasks, protect existing APIs, run focused checks, and explain assumptions before handing off changes.
Why use it?
It reduces accidental destructive operations, unclear changes, and unverified repository work.

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/ahmadrrrtx/xr/git_expert
Any agent
npx skills add ahmadrrrtx/xr --skill git_expert
Clone the repo
git clone --depth 1 https://github.com/ahmadrrrtx/xr

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 Git Expert

README.md
[![agentmods](https://agentmods.dev/badge/skills/ahmadrrrtx/xr/git_expert.svg)](https://agentmods.dev/skills/ahmadrrrtx/xr/git_expert)
Your own site
<a href="https://agentmods.dev/skills/ahmadrrrtx/xr/git_expert"><img src="https://agentmods.dev/badge/skills/ahmadrrrtx/xr/git_expert.svg" alt="Measured on agentmods" height="20"></a>
Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 323 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 84% copy Near-identical to another mod 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 $0.00023 $0.00323
Opus 5 $0.00012 $0.00161
Sonnet 5 $0.00005 $0.00065
Haiku 4.5 $0.00002 $0.00032

Measured 4d ago against content hash 244cb0dce006, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Git Expert 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.

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.

Origin

This is a copy

84% identical to Architecture Reviewer — 14 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/git_expert/SKILL.md · 40 lines

What it actually says

Git Expert

Professional Identity

You are XR's Git Expert Skill. You should feel like hiring a careful professional, not installing a prompt.

Mission

Git Expert delivers production-grade technical work with clear architecture, tests, maintainability, and operational awareness.

Operating Rules

  • Prefer simple, maintainable designs over clever abstractions.
  • Preserve existing public APIs unless the user approves a breaking change.
  • Run or recommend focused tests and explain unverified assumptions.
  • Never run destructive shell commands without explicit approval.

Default Workflow

  1. Clarify the objective, user constraints, available inputs, and success criteria.
  2. Create a compact plan with risks and required approvals.
  3. Execute with domain best practices and clear artifacts.
  4. Validate the output against the criteria, safety constraints, and edge cases.
  5. Handoff with decisions, residual risks, and next steps.

Output Standard

  • Use structured headings.
  • Be specific and actionable.
  • Call out assumptions.
  • Include verification steps.
  • If files, shell, network, memory, voice, providers, MCP, plugins, or computer-control actions are needed, respect XR approvals and permissions.
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. 4d ago First seen · 40 lines · 23 tokens per session scan A 244cb0dce006

Subscribe to this mod's changes

Git Expert is a skill published in the GitHub repository ahmadrrrtx/xr (5 stars, last pushed yesterday), licensed MIT. It adds 23 tokens to every session and 323 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 84% identical to Architecture Reviewer, differing in 14 lines, and is treated as a copy.