commit

A guide for writing Git commit messages in the Conventional Commits format, a shared pattern for describing code changes.

In plain words
What is it for?
Generating commit messages with a change type, optional affected area, short summary, longer explanation, and footer.
Why use it?
It makes commit history easier to scan and helps identify whether a change adds a feature, fixes a bug, updates documentation, or serves another purpose.

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/arcblock/agent-skills/commit
Any agent
npx skills add ArcBlock/agent-skills --skill commit
Clone the repo
git clone --depth 1 https://github.com/ArcBlock/agent-skills

Made for: Claude Code, Codex.

Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,396 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 $0.00015 $0.01396
Opus 5 $0.00008 $0.00698
Sonnet 5 $0.00003 $0.00279
Haiku 4.5 $0.00002 $0.00140

Measured 2d ago against content hash fcb1e11deda2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

commit 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 2d 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.

.claude/skills/commit/SKILL.md · 211 lines

How it starts

The opening of the file, as written. The whole thing — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Commit Skill

Generate standardized git commit messages following the project's Conventional Commits specification.

Commit Message Format

<type>(<scope>): <subject>

<body>

<footer>

Type (Required)

Based on project history analysis, use the following types:

Type Description Example
feat New feature feat: add user authentication
fix Bug fix fix: resolve login timeout issue
docs Documentation only docs: update API documentation
style Code style (formatting, semicolons, etc.) style: fix indentation
refactor Code refactoring (no feature change) refactor: extract validation logic
perf Performance improvement perf: optimize database queries
test Add or modify tests test: add unit tests for auth module
chore Build process or auxiliary tools chore: update dependencies
ci CI/CD configuration ci: add GitHub Actions workflow
build Build system changes build: upgrade webpack to v5

Scope (Optional)

Scope indicates the affected module or area, enclosed in parentheses:

feat(agentloop): add verification skill
fix(auth): resolve token refresh issue

Common scopes in this project:

  • Plugin names: agentloop, blocklet, arcblock-context
  • Skill names: blocklet-dev-setup, blocklet-pr
  • Module names: specific functional modules

Subject (Required)

  • Use imperative mood: "add" not "added" or "adds"
  • Lowercase first letter
  • No period at the end
  • Keep under 50 characters
  • Describe what the commit does

Good examples:

  • feat: add blocklet-branch skill for branch management
  • fix: resolve gh command order issue
  • docs: update installation guide

Bad examples:

  • feat: Added new feature. (wrong tense, has period)
  • Fix bug (missing type prefix)
  • feat: This commit adds a new feature that... (too verbose)

Body (Optional)

  • Wrap at 72 characters
  • Explain "what" and "why" vs "how"
  • Separate from subject with blank line

Read the full file on GitHub · 211 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. 2d ago First seen · 211 lines · 15 tokens per session scan A fcb1e11deda2

Subscribe to this mod's changes

commit is a skill published in the GitHub repository ArcBlock/agent-skills (5 stars, last pushed 2d ago), licensed MIT. It adds 15 tokens to every session and 1,396 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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