Borrowing it
Nothing to install: this file belongs to jenreh/appkit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/jenreh/appkit/main/.claude/skills/commit-msg/SKILL.mdgit clone --depth 1 https://github.com/jenreh/appkitWrote 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/jenreh/appkit/commit-msg)<a href="https://agentmods.dev/skills/jenreh/appkit/commit-msg"><img src="https://agentmods.dev/badge/skills/jenreh/appkit/commit-msg/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/jenreh/appkit/commit-msg"><img src="https://agentmods.dev/badge/skills/jenreh/appkit/commit-msg.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 | $0.00042 | $0.00384 |
| Opus 5.5 | $0.00017 | $0.00154 |
| Sonnet 5.5 | $0.00008 | $0.00077 |
| Haiku 4.5 | $0.00004 | $0.00038 |
Grade A, and why
commit-msg 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.
What it actually says
Commit Message
Generate a commit message for the current changes. Do NOT run git commit.
Step 1 — gather context
Run these in parallel:
git diff --staged
git diff
git status --short
git log --oneline -10
Step 2 — choose the diff scope
- If there are staged changes (
git diff --stagedis non-empty), use those. - Otherwise fall back to all unstaged changes (
git diff). - If both are empty, report "nothing to commit" and stop.
Step 3 — generate the message
Follow the project's conventional commits style observed from git log:
<type>(<optional scope>): <short imperative summary>
<optional body — only when the why is non-obvious>
Types: feat, fix, refactor, chore, docs, test, perf
Rules:
- Summary line ≤ 72 characters, lowercase, no trailing period.
- Imperative mood: "add", "fix", "remove" — not "added" or "fixes".
- Body only when the diff contains a non-obvious motivation or breaking change.
- If the diff spans multiple unrelated concerns, say so and suggest splitting.
Step 4 — output
Present the message in a code block, ready to copy:
<generated message here>
Then add one line explaining the type choice if it wasn't obvious.
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 · 66 lines · 42 tokens per session scan A 038979ade4bd
commit-msg is a skill published in the GitHub repository jenreh/appkit (4 stars, last pushed 2d ago), licensed MIT. It adds 42 tokens to every session and 384 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 2026-08-31.
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