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 agentmods add skills/maddada/ghostex/writing-commit-messagesnpx skills add maddada/Ghostex --skill writing-commit-messagesgit clone --depth 1 https://github.com/maddada/GhostexWhat 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 | $0.00031 | $0.00489 |
| Opus 5 | $0.00015 | $0.00244 |
| Sonnet 5 | $0.00006 | $0.00098 |
| Haiku 4.5 | $0.00003 | $0.00049 |
Grade A, and why
writing-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 3d 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- writing-commit-messages — 100% identical, 0 lines differ
- writing-commit-messages — 95% identical, 2 lines differ
What it actually says
Writing Commit Messages
Write commit messages that follow commit style guidelines for the project.
Format
<subsystem>: <summary>
<reference issues/PRs/etc.>
<long form description>
Rules
Subject line
- Subsystem prefix: Use a short, lowercase identifier for the
area of code changed (e.g.,
terminal,vt,lib,config,font). Determine this from the file paths in the diff. If changes span the macOS app, usemacos. For GTK, usegtk. For build system, usebuild. Use nested subsystems with/when helpful and exclusive (e.g.,terminal/osc). - Summary: Lowercase start (not capitalized), imperative mood, no trailing period. Keep it concise—ideally under 60 characters total for the whole subject line.
References
- If the change relates to a GitHub issue, PR, or discussion, list
the relevant numbers on their own lines after the subject, separated
by a blank line. E.g.
#1234 - If there are no references, omit this section entirely (no blank line).
Long form description
- Describe what changed, what the previous behavior was, and how the new behavior works at a high level.
- Use plain prose, not bullet points. Wrap lines at ~72 characters.
- Focus on the why and how rather than restating the diff.
- Keep the tone direct and technical without filler phrases.
- Don't exceed a handful of paragraphs; less is more.
Workflow
- If
.jjis present, usejjinstead ofgitfor all commands. - Run a diff to see what changes are present since the last commit.
- Identify the subsystem from the changed file paths.
- Identify any referenced issues/PRs from the diff context or branch name.
- Draft the commit message following the format above.
- Apply the commit
- Don't push the commit; leave that to the user.
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.
- 3d ago First seen · 63 lines · 31 tokens per session scan A d76298141711
writing-commit-messages is a skill published in the GitHub repository maddada/Ghostex (714 stars, last pushed 3d ago), licensed MIT. It adds 31 tokens to every session and 489 once invoked, about $0.0002 per session on Opus 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.
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