versioning-skills

versioning-skills is a skill for Claude Code from oaustegard/claude-skills. It costs 41 tokens per session (1,461 once invoked), scanned A, original, MIT.

A skill-development workflow that uses Git to save versions of skill files as they are created or changed. Git is a tool for recording file history and comparing or restoring earlier versions.

In plain words
What is it for?
It is for initializing a Git repository for a new skill, committing each logical edit, and reviewing or restoring previous versions.
Why use it?
It prevents accidental changes from becoming permanent and makes it possible to compare or roll back earlier work.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /home/claude/skill-name.

Part of the skill-development plugin — 2 skills shipped together

Good fit It is for initializing a Git repository for a new skill, committing each logical edit, and reviewing or restoring previous versions.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add oaustegard/claude-skills
Claude Code
/plugin install skill-development

Made for: Claude Code.

Or install skill-development, the plugin that ships this one along with the rest of its 2 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 versioning-skills

README.md
[![agentmods](https://agentmods.dev/badge/skills/oaustegard/claude-skills/versioning-skills/github.svg)](https://agentmods.dev/skills/oaustegard/claude-skills/versioning-skills)
Your own site
<a href="https://agentmods.dev/skills/oaustegard/claude-skills/versioning-skills"><img src="https://agentmods.dev/badge/skills/oaustegard/claude-skills/versioning-skills/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for versioning-skills

Your own site · 80×15
<a href="https://agentmods.dev/skills/oaustegard/claude-skills/versioning-skills"><img src="https://agentmods.dev/badge/skills/oaustegard/claude-skills/versioning-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,461 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.
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 5.1 $0.00041 $0.01461
Opus 5.5 $0.00016 $0.00584
Sonnet 5.5 $0.00008 $0.00292
Haiku 4.5 $0.00004 $0.00146

Measured 1mo ago against content hash 932743c0b766, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

versioning-skills 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 1mo 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.

plugins/skill-development/skills/versioning-skills/SKILL.md · 223 lines

How it starts

The opening of the file, as written. The whole thing — 223 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Versioning Skills

Use git to track changes during skill development. Initialize repos after creating skills, commit after each logical change, and use git commands to compare versions or revert mistakes.

When Creating a New Skill

After running init_skill.sh, immediately initialize git:

cd /home/claude/skill-name
git init
git add .
git commit -m "Initial commit: skill structure"

When Editing Skills

After each logical change (adding a section, fixing an example, refactoring), commit:

cd /home/claude/skill-name
git add .
git commit -m "Add: validation workflow pattern"

Commit message patterns:

  • "Add [feature]: description" - New functionality
  • "Fix [issue]: description" - Bug fixes
  • "Update [section]: description" - Content changes
  • "Refactor [component]: description" - Structural changes
  • "Remove [feature]: description" - Deletions

When User Asks "What Changed?"

Never display diffs inline — redirect to files and provide links (see below). Only create a diff or changelog when the user explicitly asks ("what changed?", "show differences").

Don't preemptively create:

  • CHANGELOG.md files
  • Change documentation
  • "Here's what I modified" summaries

Why: The updated code/docs ARE the documentation. Creating separate changelogs wastes tokens and duplicates information.

When user asks, show commit history:

cd /home/claude/skill-name
git log --oneline

Save diff to file (prevents token waste):

cd /home/claude/skill-name
git diff <commit-hash-1> <commit-hash-2> > /mnt/user-data/outputs/changes.diff

Then provide: [View changes](computer:///mnt/user-data/outputs/changes.diff)

For multiple diffs:

# Changed files list
git diff --name-only <commit-1> <commit-2> > /mnt/user-data/outputs/changed-files.txt

# Full diff
git diff <commit-1> <commit-2> > /mnt/user-data/outputs/full-diff.diff

# Summary stats
git diff --stat <commit-1> <commit-2> > /mnt/user-data/outputs/diff-stats.txt

Read the full file on GitHub · 223 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.

  1. 1mo ago Changed 932743c0b766
  2. 1mo ago First seen · 223 lines · 41 tokens per session scan A fcaefb3b37c6

Subscribe to this mod's changes

versioning-skills is a skill published in the GitHub repository oaustegard/claude-skills (153 stars, last pushed yesterday), licensed MIT. It adds 41 tokens to every session and 1,461 once invoked, about $0.0002 per session on Opus 5.5. 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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