commit

A guide for writing commit messages in the Conventional Commits format, a shared style that labels changes such as fixes, features, tests, and documentation.

In plain words
What is it for?
Choosing the correct change type, adding an optional scope, and writing commit, amend, squash, or pull-request titles that make sense without the full diff.
Why use it?
Clear commit messages help people understand the project history later and let release tools infer the likely version change.

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

Made for: Claude Code, Codex.

Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 972 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 $0.00063 $0.00972
Opus 5 $0.00032 $0.00486
Sonnet 5 $0.00013 $0.00194
Haiku 4.5 $0.00006 $0.00097

Measured yesterday against content hash 5c6cecf2bfbe, 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 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.

skills/commit/SKILL.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Commit

The log is read by people who were not in the session. A subject that made sense with the diff open in front of you is not the test. The test is whether it still says something six months later in git log --oneline.

$ARGUMENTS

The shape

<type>[optional scope]: <description>

[optional body]

[optional footer(s)]

The colon and the space after it are required. So is the description.

Pick the type

Two are fixed by the spec and the rest are convention:

  • feat when the commit adds a feature. This is the only thing that earns feat.
  • fix when the commit repairs a bug. Not "touched a file under src/".
  • docs, test, refactor, perf, build, ci, style, chore, revert for everything else.

The type is a claim about the change, and a wrong one is a lie the release tooling believes: fix cuts a PATCH release, feat cuts a MINOR one, and a breaking change cuts a MAJOR one. Reaching for chore because the change is hard to classify is how a feature ships unreleased.

A scope is optional. Use one when the repository has real sections a reader would recognise (fix(parser):), and leave it off rather than inventing one.

Write the description

The spec says only that a description follows the colon and space. These are this repository's rules on top of it, and calling them "the standard" would be wrong:

  1. Imperative mood. "add the receipt", not "adds", "added" or "the receipt". Read it as this commit will <description>.
  2. Lower case after the colon, and no full stop at the end.
  3. 72 characters or fewer for the whole subject line, type included.
  4. Name the change, not the file. "fix the gate" says nothing that --stat does not.
  5. One commit, one change. If the description needs an "and" joining two unrelated things, it is two commits.

Breaking changes

Mark them in the prefix with !, in a footer, or both:

feat(api)!: take the store root from the manifest

BREAKING CHANGE: MSTACK_ROOT is no longer read.

Read the full file on GitHub · 93 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 · 93 lines · 63 tokens per session scan A 5c6cecf2bfbe

Subscribe to this mod's changes

commit is a skill published in the GitHub repository romerma/mstack (1 stars, last pushed 8d ago), licensed MIT. It adds 63 tokens to every session and 972 once invoked, about $0.0003 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.

Related

Other skills, from other repositories

happiness-skill

当用户问「怎么才能更幸福/为什么得到了还不满足/怎么减少焦虑」时调用。 核心理念: 幸福是缺憾感清空的默认状态, 是可训练的技能; 欲望是与自己的契约(得到前不快乐), 同时只留一个重大欲望; 活在当下。 不适用于: 临床抑郁等需要专业治疗的场景(本书方法不能替代医疗)。 Triggers: 幸福/不快乐/欲望/焦虑/知足/活在当下/happiness/desire/anxiety.

kangarooking/cangjie-skill · 136 tokens

gsd-audit-milestone

Audit milestone completion against original intent before archiving.

open-gsd/gsd-core · 17 tokens

spec-kitty-charter-doctrine

Run charter interview, generation, context, and sync workflows for project governance in Spec Kitty 3.x. Access doctrine artifacts programmatically via DoctrineService. Resolve agent profiles. Load action-scoped governance context iteratively, not all at once. Triggers: "interview for charter", "generate charter"…

Priivacy-ai/spec-kitty · 135 tokens

spec-kitty-spdd-reasons

Drive REASONS Canvas authoring and review for Spec Kitty missions that opted in to Structured-Prompt-Driven Development (SPDD) via charter selection. Triggers: "use SPDD", "use REASONS", "generate a REASONS canvas", "apply structured prompt driven development", "make this mission SPDD". Does NOT handle: enforcing SPDD…

Priivacy-ai/spec-kitty · 118 tokens

dependency-upgrade

Plan, batch, and verify dependency upgrades safely. Triages outdated packages into risk tiers, upgrades in order (dev/minor/patch first, runtime majors last), verifies each batch, and produces an auditable commit sequence. Use when asked to "upgrade deps", "bump packages", "update nodemodules", "fix vulnerabilities"…

open-gsd/gsd-pi · 90 tokens

forensics

Post-mortem a failed GSD auto-mode run. Traces symptom to root cause via .gsd/ activity, journal, metrics, and lock artifacts, producing a filing-ready bug report with file:line refs and a fix suggestion. Use when asked to "forensics", "post-mortem", "why did auto-mode fail", "trace the stuck loop", "debug the crash"…

open-gsd/gsd-pi · 112 tokens