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Official agent skill

Commits

by JetBrains in JetBrains/MPS

A skill your agent uses whenever the user asks to commit changes, write or fix a commit message, amend or rename a commit, or do a workflow that includes committing in the IntelliJ repository.

OfficialApache-2.0Auto-check passedDevelopment

Install Commits

skills CLI
$ npx skills add JetBrains/MPS --skill commits -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install JetBrains/MPS commits --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/JetBrains/MPS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/commits .claude/skills/commits && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
commits
GitHub stars
1.7k
Token cost
~850 tokens
SKILL.md length
339 words
Files
1
Skills in repo
41
Repo updated
First seen
Licence
Apache-2.0

At a glance

A skill your agent uses whenever the user asks to commit changes, write or fix a commit message, amend or rename a commit, or do a workflow that includes committing in the IntelliJ repository.

  • Works in 4 steps: Review the full diff (staged + unstaged)… → Identify the motivation: why is this… → Write a subject line: ticket + concise… → …
  • The user asks to commit changes
  • SKILL.md covers Workflow, Source Of Truth, Quick Rules and Examples, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Commits is an agent skill from JetBrains/MPS, published by the product's own GitHub organization. Use this skill whenever the user asks to commit changes, write or fix a commit message, amend or rename a commit, or do a workflow that includes committing in the IntelliJ repository. This is a thin repo-specific overlay: use IntelliJ commit format, write full commit messages by default, and keep requested suffixes such as IJ-MR trailers in a final separate paragraph.

Its SKILL.md is about 850 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Commit messages. It works with JetBrains IDEs. The repository describes itself as: JetBrains Meta programming System. The licence is Apache-2.0.

When your agent uses it

  • The user asks to commit changes
  • Fix a commit message
  • Rename a commit
  • Do a workflow that includes committing in the IntelliJ repository

Example prompts

  • “/commits”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Review the full diff (staged + unstaged) before writing the message.
  2. Identify the motivation: why is this change being made?
  3. Write a subject line: ticket + concise summary (subsystem is not needed when a ticket is present), or label + subsystem + concise summary.
  4. Write a body for any non-trivial change: explain the "why", summarize

What it can do on your machine

Read from SKILL.md and the folder at commit 3e9cfcd. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • youtrack.jetbrains.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Commits loads about 850 tokens when it runs. Until then it costs about 95 tokens; SKILL.md has 339 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~95
When it runs · the whole SKILL.md, loaded when a task matches
~850

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from JetBrains/MPS at commit 3e9cfcd, republished under its Apache-2.0 licence (© JetBrains). 339 words, ~850 tokens.

Download SKILL.mdSave it as .claude/skills/commits/SKILL.md (or your agent's skills folder).
name
commits
description
Use this skill whenever the user asks to commit changes, write or fix a commit message, amend or rename a commit, or do a workflow that includes committing in the IntelliJ repository. This is a thin repo-specific overlay: use IntelliJ commit format, write full commit messages by default, and keep requested suffixes such as IJ-MR trailers in a final separate paragraph.

Commits

Critical: SafePush/Patronus validates commit messages before allowing merges. Invalid format wastes CI time and reviewer time.

Workflow

  1. Review the full diff (staged + unstaged) before writing the message.
  2. Identify the motivation: why is this change being made?
  3. Write a subject line: ticket + concise summary (subsystem is not needed when a ticket is present), or label + subsystem + concise summary.
  4. Write a body for any non-trivial change: explain the "why", summarize key design decisions, and note any non-obvious behavioral effects. Do not just restate what the diff shows — explain what the reader cannot see from the code alone.

Source Of Truth

  • Follow docs/IntelliJ-Platform/0_Intro/2_Commits.md.
  • This skill is a repo-specific overlay, not a replacement for that document.
  • In this repository, IntelliJ commit format takes precedence over generic commit conventions.
  • Do not use Conventional Commits here.
  • If the user asks to push, use the safe-push skill for push workflow details.

Quick Rules

  • Behavioral changes need a YouTrack ticket in the subject line.
  • When a ticket ID is present, omit the subsystem prefix — the ticket provides sufficient context.
  • Clearly non-behavioral changes may use a non-production label such as tests, cleanup, refactor, docs, format, style, setup, or misc.
  • If there is any doubt whether the change is behavioral, do not use a non-production label.
  • Write a full commit message (subject + body) for any non-trivial change. Subject-only is acceptable only for truly mechanical changes (typo, import, format).
  • The body must explain why the change was made and summarize key decisions. Do not just list what files changed — the diff already shows that.
  • Keep the first line concise; put rationale and important behavior notes in the body.
  • If the user requests a suffix such as IJ-MR-100, put it in a final separate paragraph after a blank line.
  • Do not use commits starting with WIP, fixup!, squash!, or amend!.

Examples

text
MRI-3589 harden single-flight recursion checks

Track active single-flight computations in coroutine context so recursive
awaits fail fast in both the owning coroutine and child coroutines.

IJ-MR-100
text
tests cidr: migrate JUnit 5 coverage

Convert remaining JUnit 4 test suites under cidr/coverage to JUnit 5.
Parametrized tests now use @MethodSource instead of Theories runner.

Anti-patterns

  • Subject-only messages for non-trivial changes (even non-production ones).
  • Restating the diff ("changed X in file Y") instead of explaining motivation.
  • Using Conventional Commits format (fix(scope): ...).

References

© JetBrains, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/commits of JetBrains/MPS.

Open the folder on GitHubat commit 3e9cfcd

Compare with similar skills

Commits next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Commits compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Commits this skillJetBrains/MPS1.7k—~850Automated safety check: PassApache-2.0
CommitsJetBrains/intellij-community21k—~589Automated safety check: PassCustom licence
Doc SyncJetBrains/ideavim10k2 repos~2.6kAutomated safety check: PassMIT
Contextual Commit Messagesyamadashy/repomix29k1 repos~2.7kAutomated safety check: PassMIT
React Router Release Notes Prepremix-run/react-router57k—~1.1kAutomated safety check: PassMIT
Caveman Commitvishiri/fantasia-archive40913 repos~642Automated safety check: PassGPL-3.0

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    Create, amend, or rename IntelliJ commits and write commit messages.

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  • Caveman Commit

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    409 GitHub starsUsed in 13 repos~642 tokens
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Works with

Categories

Questions about Commits

What does Commits do?

A skill your agent uses whenever the user asks to commit changes, write or fix a commit message, amend or rename a commit, or do a workflow that includes committing in the IntelliJ repository. Commits is an agent skill from JetBrains/MPS, published by the product's own GitHub organization. Use this skill whenever the user asks to commit changes, write or fix a commit message, amend or rename a commit, or do a workflow that includes committing in the IntelliJ repository.

When should I use Commits?

Commits fits situations like: the user asks to commit changes; fix a commit message; rename a commit; do a workflow that includes committing in the IntelliJ repository.

How do I install Commits in Claude Code?

Run `npx skills add JetBrains/MPS --skill commits -a claude-code`. Or copy the skill folder (.agents/skills/commits in JetBrains/MPS) into .claude/skills/commits in your project. Claude Code loads it when a task matches its description.

How do I install Commits in Codex?

Run `npx skills add JetBrains/MPS --skill commits -a codex`. Or copy the skill folder (.agents/skills/commits in JetBrains/MPS) into .agents/skills/commits in your project. Codex loads it when a task matches its description.

Can I use Commits in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add JetBrains/MPS --skill commits -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/commits, .gemini/skills/commits, .github/skills/commits and .opencode/skills/commits in your project.

What does Commits need to run?

SKILL.md names no scripts, command-line tools or credentials: Commits is instructions for the agent only.

Does Commits access the network?

SKILL.md names 1 domain. As links in the text: youtrack.jetbrains.com. This is read from the text; nothing was executed.

Is Commits safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Commits use?

Commits is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Commits use?

About 850 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Commits?

Skills that share tags, products or a category with Commits: Commits (JetBrains/intellij-community, 21k stars), Doc Sync (JetBrains/ideavim, 10k stars), Contextual Commit Messages (yamadashy/repomix, 29k stars) and React Router Release Notes Prep (remix-run/react-router, 57k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Commits?

JetBrains (a GitHub organization, an official publisher) maintains it in JetBrains/MPS, which has 1,661 GitHub stars. The repository holds 41 skills in this directory. The repository was last updated on October 9, 2026.

Source: JetBrains/MPS on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.