Commit Message Generator

A tool for writing Git commit messages, which briefly record changes made to a code project, in a consistent format.

In plain words
What is it for?
Reviewing staged changes and producing messages for features, bug fixes, documentation, refactoring, tests, builds, and other changes.
Why use it?
It removes the need to decide how to describe each change and keeps commit history useful for teams, changelogs, and version updates.

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/cyperx84/claude-code-plugin-examples/commit-message-generator
Any agent
npx skills add cyperx84/claude-code-plugin-examples --skill commit-message-generator
Clone the repo
git clone --depth 1 https://github.com/cyperx84/claude-code-plugin-examples

Made for: Claude Code, Codex.

Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,947 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 $0.00020 $0.01947
Opus 5 $0.00010 $0.00974
Sonnet 5 $0.00004 $0.00389
Haiku 4.5 $0.00002 $0.00195

Measured yesterday against content hash 7ae4491c53b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Commit Message Generator 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 yesterday.

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.

examples/01-beginner/git-helper-plugin/skills/commit-message-generator/SKILL.md · 322 lines

How it starts

The opening of the file, as written. The whole thing — 322 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Commit Message Generator

Purpose

Generate high-quality commit messages that:

  • Follow conventional commit format
  • Clearly describe changes
  • Provide useful context
  • Aid in changelog generation
  • Support semantic versioning

When to Use

Invoke this skill when:

  • User needs help writing commit messages
  • Reviewing staged changes for commit
  • Creating standardized team commit messages
  • Generating changelog entries
  • Teaching commit message best practices

Instructions

Step 1: Analyze the Changes

Examine the git diff to understand:

  1. Scope of change: What files/modules affected
  2. Type of change: Feature, fix, refactor, docs, etc.
  3. Impact: Breaking change or not
  4. Why: The reason for the change

Step 2: Determine Commit Type

Choose the appropriate conventional commit type:

  • feat: New feature
  • fix: Bug fix
  • docs: Documentation only
  • style: Formatting, missing semicolons, etc.
  • refactor: Code change that neither fixes a bug nor adds a feature
  • perf: Performance improvement
  • test: Adding or updating tests
  • build: Changes to build system or dependencies
  • ci: CI configuration changes
  • chore: Other changes that don't modify src or test files
  • revert: Reverting a previous commit

Step 3: Identify Scope (Optional)

Determine the scope (area of codebase):

  • Component name: auth, api, ui
  • Module name: parser, validator
  • Feature name: login, checkout

Step 4: Write the Subject Line

Create a subject line that:

  • Starts with type and optional scope: type(scope):
  • Uses imperative mood: "add" not "added" or "adds"
  • Is no longer than 50-72 characters
  • Does not end with a period
  • Clearly describes WHAT changed

Step 5: Add Body (if needed)

Include a body for complex changes:

  • Explain WHY the change was made
  • Describe the previous behavior
  • Explain the new behavior
  • Justify your approach
  • Wrap at 72 characters

Step 6: Add Footer (if needed)

Read the full file on GitHub · 322 lines

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. yesterday First seen · 322 lines · 20 tokens per session scan A 7ae4491c53b5

Subscribe to this mod's changes

Commit Message Generator is a skill published in the GitHub repository cyperx84/claude-code-plugin-examples (2 stars, last pushed 10mo ago), licensed MIT. It adds 20 tokens to every session and 1,947 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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