commit-messages

commit-messages is a skill for Claude Code, Codex from ahnafyy/skills-evals. It costs 26 tokens per session (76 once invoked), scanned A, original, MIT.

A skill for writing conventional Git commit messages: short messages with a change type, optional area, and imperative summary. Git commits are saved checkpoints of code changes.

In plain words
What is it for?
Use it when committing changes, drafting a commit message, or reviewing the clarity of existing Git history.
Why use it?
It helps keep commit history consistent and makes changes easier to understand later.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/ahnafyy/skills-evals/commit-messages
Any agent
npx skills add ahnafyy/skills-evals --skill commit-messages
Clone the repo
git clone --depth 1 https://github.com/ahnafyy/skills-evals

Made for: Claude Code, Codex.

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 commit-messages

README.md
[![agentmods](https://agentmods.dev/badge/skills/ahnafyy/skills-evals/commit-messages.svg)](https://agentmods.dev/skills/ahnafyy/skills-evals/commit-messages)
Your own site
<a href="https://agentmods.dev/skills/ahnafyy/skills-evals/commit-messages"><img src="https://agentmods.dev/badge/skills/ahnafyy/skills-evals/commit-messages.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 76 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00026 $0.00076
Opus 5 $0.00013 $0.00038
Sonnet 5 $0.00005 $0.00015
Haiku 4.5 $0.00003 $0.00008

Measured 3d ago against content hash c7e0289588ea, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 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.

test/fixtures/sample-repo/skills/commit-messages/SKILL.md · 13 lines

What it actually says

Commit Messages

Overview

Write conventional commits: type(scope): imperative summary under 72 chars.

When to Use

Use when the user asks to commit, drafts a commit message, or reviews git history.

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. 3d ago First seen · 13 lines · 26 tokens per session scan A c7e0289588ea

Subscribe to this mod's changes

commit-messages is a skill published in the GitHub repository ahnafyy/skills-evals (3 stars, last pushed 1mo ago), licensed MIT. It adds 26 tokens to every session and 76 once invoked, about $0.0001 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 2026-08-31.

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