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.
/plugin marketplace add oaustegard/claude-skills/plugin install skill-developmentWrote 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.
[](https://agentmods.dev/skills/oaustegard/claude-skills/versioning-skills)<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.
<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>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 | $0.00041 | $0.01461 |
| Opus 5.5 | $0.00016 | $0.00584 |
| Sonnet 5.5 | $0.00008 | $0.00292 |
| Haiku 4.5 | $0.00004 | $0.00146 |
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.
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
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.
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.
- 1mo ago Changed 932743c0b766
- 1mo ago First seen · 223 lines · 41 tokens per session scan A fcaefb3b37c6
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.
Other skills, from other repositories
changelog-generator
Convierte un git log, lista de commits o notas de lanzamiento en un changelog pulido orientado al usuario. Usa cuando estés escribiendo notas de versión, generando una entrada en CHANGELOG.md o documentando qué cambió en una versión. Produce una sección de changelog estructurada con encabezado de versión, cambios…
pr-description-writer
Redacta una descripción de pull request clara y estructurada a partir de un diff de git, resumen de rama o lista de commits. Úsalo cuando te pidan escribir una descripción de PR, redactar una solicitud de cambios o documentar cambios de código. Produce una descripción con resumen, motivación, cambios realizados, pasos…
release-notes-from-git-log
Turn a git log into user-facing release notes grouped by feature and fix. Use when asked for release notes from this git log, a changelog entry from these commits, or to turn commits into release notes. Produces a grouped changelog with one line per change and a short headline.
pr-pickup
A Slack handoff workflow for pull requests. A pull request is a proposed code change for review; this workflow takes its link from Slack, sends the work to be fixed, and reports the result back in the Slack thread.
commit-optimization
Use when configuring settings.json to reduce fuse-commit-pro's context token usage.
Changelog Curator
Maintains and formats a CHANGELOG.md following Keep a Changelog conventions from git history or PR list.