# repo-audit

Analyzes Git history to reveal frequently modified hotspot files, author ownership metrics, and leaked credentials across all commits.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · ★ 4679
- Author: zebbern
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/zebbern/claude-code-guide/tree/HEAD/skills/repo-audit/SKILL.md
- Updated: 2026-10-24
- HTML: https://affpapa.org/en/nevibecode/skills/repo-audit

## What it does

The skill investigates Git repositories using three dedicated shell scripts. The `scripts/hotfiles.sh` script pinpoints heavily edited files, displaying the top 20 churn hotspots by default. This highlights fragile code sections and candidates for refactoring.

Ownership analysis runs via `scripts/ownership.sh`. It reports commit shares, added or removed lines, and last active dates per contributor for the entire project or a selected directory. To catch security risks, `scripts/secret-scan.sh` inspects commit history, including deleted revisions, looking for AWS keys, Slack tokens, SSH private keys, and passwords.

The toolkit relies on `git` 2.20 or newer, `bash` 4.0 or newer, and core Unix tools like `awk`, `grep`, `sort`, and `head`. It requires no third-party APIs. Without `bash` 4.0 in your environment, the scripts will fail to execute.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add zebbern/claude-code-guide --skill repo-audit -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/repo-audit/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/repo-audit/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add zebbern/claude-code-guide --skill repo-audit -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/repo-audit/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add zebbern/claude-code-guide --skill repo-audit -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/repo-audit/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install zebbern/claude-code-guide repo-audit
```

2. **Manually: put the files in place**
- File: `.github/skills/repo-audit/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add zebbern/claude-code-guide --skill repo-audit -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/zebbern/claude-code-guide --path skills/repo-audit
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/repo-audit/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add zebbern/claude-code-guide --skill repo-audit -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/zebbern/claude-code-guide/tree/HEAD/skills/repo-audit/SKILL.md

## When to use it
- detect frequently edited files that create technical debt
- identify primary code owners before assigning review tasks
- scan commit history across all branches for leaked tokens and private keys
- export Git contributor activity metrics to table, CSV, or JSON

## Example prompts
- Scan the Git history for leaked credentials and private keys
- Show the top 20 most frequently changed files since 2024-01-01
- Check code ownership and recent contributors for the `src/api` folder

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: f34a535eea2df063.

BEGIN THIRD-PARTY FILE f34a535eea2df063
````text
---
name: repo-audit
description: "Deep analysis of Git history: identify frequently changed hotspot files, analyze code ownership by contributor, and scan for leaked secrets. Triggered when users ask about Git analysis, code hotspots, who owns what code, secret scanning, security audits of commit history, or optimizing code review assignments."
type: tool
license: MIT
tags:
  - git
  - security
  - analysis
  - devops
---

# Repo Audit — Deep Analysis of Git History

Perform three-dimensional analysis on a Git repository: **hotspot file detection**, **code ownership analysis**, and **secret leak scanning**.

## Feature Overview

### 1. Hotspot File Analysis (`scripts/hotfiles.sh`)

Identify the most frequently changed files in a repository to help spot:
- High-risk code areas (frequent changes = potential instability)
- Files that deserve extra attention during code review
- Modules that may need splitting or refactoring

**Usage:**
```bash
bash scripts/hotfiles.sh [options]
```

| Option | Description | Default |
|--------|-------------|---------|
| `--repo PATH` | Repository path | Current directory |
| `--top N` | Show top N files | 20 |
| `--since DATE` | Start date (e.g. `2024-01-01`) | None |
| `--until DATE` | End date | None |
| `--author AUTHOR` | Filter by author | None |
| `--format FORMAT` | Output format: `table` / `csv` / `json` | table |

### 2. Code Ownership Analysis (`scripts/ownership.sh`)

Analyze actual code ownership, reporting for each contributor within the specified scope:
- Commit count and percentage
- Lines changed (additions/deletions)
- Last active date

**Usage:**
```bash
bash scripts/ownership.sh [options]
```

| Option | Description | Default |
|--------|-------------|---------|
| `--repo PATH` | Repository path | Current directory |
| `--path SUBPATH` | Analyze a specific subdirectory or file | Entire repo |
| `--top N` | Show top N contributors | 10 |
| `--since DATE` | Start date | None |
| `--format FORMAT` | Output format: `table` / `csv` / `json` | table |

### 3. Secret Leak Scanning (`scripts/secret-scan.sh`)

Scan the full Git history (including deleted commits) for common secrets and sensitive information:
- AWS Access Key / Secret Key
- GitHub / GitLab / Slack Tokens
- SSH Private Keys
- Generic API Keys, passwords, and secret patterns

**Usage:**
```bash
bash scripts/secret-scan.sh [options]
```

| Option | Description | Default |
|--------|-------------|---------|
| `--repo PATH` | Repository path | Current directory |
| `--branch BRANCH` | Scan a specific branch | All branches |
| `--since DATE` | Start date | None |
| `--format FORMAT` | Output format: `table` / `csv` / `json` | table |
| `--severity LEVEL` | Minimum severity level: `low` / `medium` / `high` | low |

## Use Cases

- **Security audits**: Scan history for leaked secrets before deploying to production
- **Code review optimization**: Identify hotspot files and prioritize reviewing high-risk areas
````
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