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.
npx skills add TheDecipherist/claude-code-mastery --skill commit-messagesgit clone --depth 1 https://github.com/TheDecipherist/claude-code-masteryWrote 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/thedecipherist/claude-code-mastery/commit-messages)<a href="https://agentmods.dev/skills/thedecipherist/claude-code-mastery/commit-messages"><img src="https://agentmods.dev/badge/skills/thedecipherist/claude-code-mastery/commit-messages/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/thedecipherist/claude-code-mastery/commit-messages"><img src="https://agentmods.dev/badge/skills/thedecipherist/claude-code-mastery/commit-messages.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00029 | $0.00845 |
| Opus 5.5 | $0.00012 | $0.00338 |
| Sonnet 5.5 | $0.00006 | $0.00169 |
| Haiku 4.5 | $0.00003 | $0.00085 |
Grade A, and why
commit-messages 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 — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Commit Message Skill
Generate consistent, informative commit messages following the Conventional Commits specification.
When to Use This Skill
- User asks to "commit", "write a commit message", or "prepare commit"
- User has staged changes and mentions commits
- Before any
git commitcommand
Process
- Analyze changes: Run
git diff --stagedto see what's being committed - Identify the type: Determine the primary change category
- Find the scope: Identify the main area affected
- Write the message: Follow the format below
Commit Message Format
<type>(<scope>): <description>
[optional body]
[optional footer(s)]
Types
| Type | Description | Example |
|---|---|---|
feat |
New feature | feat(auth): add OAuth2 login |
fix |
Bug fix | fix(api): handle null response |
docs |
Documentation only | docs(readme): add setup instructions |
style |
Formatting, no code change | style: fix indentation |
refactor |
Code change, no new feature/fix | refactor(db): extract query builder |
perf |
Performance improvement | perf(search): add result caching |
test |
Adding/fixing tests | test(auth): add login unit tests |
build |
Build system changes | build: update webpack config |
ci |
CI configuration | ci: add GitHub Actions workflow |
chore |
Maintenance tasks | chore(deps): update dependencies |
revert |
Revert previous commit | revert: feat(auth): add OAuth2 |
Scope
The scope should be a noun describing the section of the codebase:
auth,api,db,ui,config- Feature names:
search,checkout,dashboard - Or omit if change is broad
Subject Line Rules
- Use imperative mood: "add" not "added" or "adds"
- Don't capitalize first letter after colon
- No period at the end
- Max 72 characters total
Body (when needed)
- Separate from subject with blank line
- Explain what and why, not how
- Wrap at 72 characters
- Use bullet points for multiple 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.
- 1mo ago First seen · 127 lines · 29 tokens per session scan A a8c5797359d5
commit-messages is a skill published in the GitHub repository TheDecipherist/claude-code-mastery (555 stars, last pushed 5mo ago), licensed MIT. It adds 29 tokens to every session and 845 once invoked, about $0.0001 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 2026-08-30.
Other skills, from other repositories
setup-caliber
Sets up Caliber for automatic AI agent context sync. Installs pre-commit hooks so CLAUDE.md, Cursor rules, and Copilot instructions update automatically on every commit. Use when Caliber hooks are not yet installed or when the user asks about keeping agent configs in sync.
commit-hygiene
Use when committing changes with git — staging files and writing commit messages. Makes the agent keep each commit focused on one logical change and write a clear, conventional message explaining why, instead of dumping unrelated edits into a single vague "update" commit.
caveman-commit
Write a Conventional Commits message compressed to intent only. Use for "write a commit", "commit message", /commit or /caveman-commit.
git
Source-control safety for Git. Two rules apply whether or not you read the body. First, never commit, amend, push, tag, rebase, cherry-pick, revert, or reset --hard unless the user asked for that exact write in this session. An explicit request to create a new commit counts anywhere in the user's own task text, but it…
git-advanced-workflows
Master advanced Git workflows including rebasing, cherry-picking, bisect, worktrees, and reflog to maintain clean history and recover from any situation. Use when managing complex Git histories, collaborating on feature branches, or troubleshooting repository issues.
changelog
Auto-generate a changelog from git commits and sprint data. Internal and player-facing versions.