commit-message-format

commit-message-format is a cursor rule for Cursor from heyAyushh/stacc. It costs 859 tokens per session, scanned A, original, MIT.

A set of rules for writing Git commit messages in a consistent format. Git is the version-control system used to record changes to code, and a commit is one saved change set.

In plain words
What is it for?
Use it when creating commits for new features, bug fixes, refactoring, performance work, and similar changes. It defines prefixes, concise summaries, bullet-list details, optional issue references, and breaking-change notes.
Why use it?
Consistent messages make a project's history easier to search and understand. The rules also make the kind of change and any breaking change clear to other developers.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc). Also seen: installed under .agents/ (shared by several agents).

Good fit Use it when creating commits for new features, bug fixes, refactoring, performance work, and similar changes. It defines prefixes, concise summaries, bullet-list details, optional issue references, and breaking-change notes.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/heyayushh/stacc/commit-message-format
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.

Clone the repo
git clone --depth 1 https://github.com/heyAyushh/stacc

Made for: Cursor.

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-message-format

README.md
[![agentmods](https://agentmods.dev/badge/rules/heyayushh/stacc/commit-message-format/github.svg)](https://agentmods.dev/rules/heyayushh/stacc/commit-message-format)
Your own site
<a href="https://agentmods.dev/rules/heyayushh/stacc/commit-message-format"><img src="https://agentmods.dev/badge/rules/heyayushh/stacc/commit-message-format/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for commit-message-format

Your own site · 80×15
<a href="https://agentmods.dev/rules/heyayushh/stacc/commit-message-format"><img src="https://agentmods.dev/badge/rules/heyayushh/stacc/commit-message-format.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 859 This file is loaded in full into every session.
When invoked 859 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00859 $0.00859
Opus 5.5 $0.00344 $0.00344
Sonnet 5.5 $0.00172 $0.00172
Haiku 4.5 $0.00086 $0.00086

Measured 1mo ago against content hash 3e58dc7cb1e8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

commit-message-format 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 1mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.agents/rules/commit-message-format.mdc · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Git Commit Message Format Rules

This rule defines the commit message guidelines that apply to all commits.

Role of this rule

  • This rule is a commit message convention based on Conventional Commits.
  • While Prefix and BREAKING CHANGE follow the Conventional Commits specification, it adds repository-specific guidelines such as language-based language selection and bullet-list bodies.
  • When reusing this rule in other projects, adjust language and the list of prefixes according to each project's policy.

Language

  • In this file, language is a logical name that represents the language used in commit messages.
  • language = "en"
  • The summary and body should, in principle, be written in the language specified by language.

Basic format (required)

<Prefix>: <summary (imperative / concise)>

- Change item 1 (bullet)
- Change item 2 (bullet)
- ...

Refs: #<issue-number> (optional)
BREAKING CHANGE: <description> (optional)

Prefix

Prefix corresponds to the type in Conventional Commits and should be a lowercase English word.

  • feat: new feature
  • fix: bug fix
  • refactor: refactoring (no behavior change)
  • perf: performance improvement
  • test: tests added/updated
  • docs: documentation updates
  • build: build/dependency changes
  • ci: CI-related changes
  • chore: chores (tools, scripts, etc.)
  • style: style-only changes (no logic impact)
  • revert: revert a previous change

As in Conventional Commits, you may optionally use the <Prefix>(scope): form when needed (e.g. fix(translation): ...). For details, see the Conventional Commits specification.

Summary (first line)

  • Write a concise summary in the language specified by language; do not add a trailing period.
  • Briefly express what was changed and, if needed, why.
  • Aim for about 50 characters in the summary line.

Message generation principles

  • Always inspect the uncommitted diff (git diff / git diff --cached etc.) and generate the summary and body based on those changes.
  • Do not rely only on issue titles or branch names; summarize the actual changes present in the diff.
  • When AI or scripts generate commit messages, they should also use the uncommitted diff as input.
  • Bots and automation tools must follow this rule and generate messages based on the diff as well.

Read the full file on GitHub · 103 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. 1mo ago First seen · 103 lines · 859 tokens per session scan A 3e58dc7cb1e8

Subscribe to this mod's changes

commit-message-format is a cursor rule published in the GitHub repository heyAyushh/stacc (3 stars, last pushed 26d ago), licensed MIT. It adds 859 tokens to every session, about $0.0034 per session on Opus 5.5. 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.