Official agent skill

Code Style

Code style rules for IntelliJ codebase. An agent skill from JetBrains/MPS.

OfficialApache-2.0Auto-check passedWriting & Content

Install Code Style

skills CLI

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

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

GitHub CLI

$ gh skill install JetBrains/MPS code-style --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/code-style .claude/skills/code-style && 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/

Paste into Claude Code

Install the "code-style" agent skill from https://github.com/JetBrains/MPS/tree/master/.agents/skills/code-style into .claude/skills/code-style/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-style", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/JetBrains/MPS/tree/master/.agents/skills/code-style

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add JetBrains/MPS --skill code-style -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install JetBrains/MPS code-style --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

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

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "code-style" agent skill from https://github.com/JetBrains/MPS/tree/master/.agents/skills/code-style into .agents/skills/code-style/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-style", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add JetBrains/MPS --skill code-style -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install JetBrains/MPS code-style --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/JetBrains/MPS.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/code-style .cursor/skills/code-style && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "code-style" agent skill from https://github.com/JetBrains/MPS/tree/master/.agents/skills/code-style into .cursor/skills/code-style/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-style", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/JetBrains/MPS.git --path .agents/skills/code-style

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add JetBrains/MPS --skill code-style -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install JetBrains/MPS code-style --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/JetBrains/MPS.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/code-style .gemini/skills/code-style && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "code-style" agent skill from https://github.com/JetBrains/MPS/tree/master/.agents/skills/code-style into .gemini/skills/code-style/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-style", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install JetBrains/MPS code-style

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add JetBrains/MPS --skill code-style -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

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

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "code-style" agent skill from https://github.com/JetBrains/MPS/tree/master/.agents/skills/code-style into .github/skills/code-style/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-style", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add JetBrains/MPS --skill code-style -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install JetBrains/MPS code-style --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/JetBrains/MPS.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/code-style .opencode/skills/code-style && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "code-style" agent skill from https://github.com/JetBrains/MPS/tree/master/.agents/skills/code-style into .opencode/skills/code-style/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-style", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: code-style
GitHub stars: 1.7k
Token cost: ~258 tokens
SKILL.md length: 101 words
Files: 1
Skills in repo: 40
Repo updated: Oct 7, 2026
First seen: Oct 8, 2026
Licence: Apache-2.0

At a glance

Code style rules for IntelliJ codebase. An agent skill from JetBrains/MPS.

Reviewing code for style compliance
SKILL.md covers Language and Formatting
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Tasks that involve Plain language and style rules

What it does

Code Style is an agent skill from JetBrains/MPS, published by the product's own GitHub organization. Code style rules for IntelliJ codebase. Use when writing or reviewing code for style compliance.

Its SKILL.md is about 260 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 Writing & Content, covering Plain language and style rules. It works with JetBrains IDEs and Kotlin. The repository describes itself as: JetBrains Meta programming System. The licence is Apache-2.0.

When your agent uses it

Reviewing code for style compliance
Tasks that involve Plain language and style rules

Example prompts

“/code-style”

What it can do on your machine

Read from SKILL.md and the folder at commit a92f944. 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
No URLs in SKILL.md.
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

Code Style loads about 258 tokens when it runs. Until then it costs about 27 tokens; SKILL.md has 101 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~27
When it runs · the whole SKILL.md, loaded when a task matches: ~258

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 a92f944, republished under its Apache-2.0 licence (© JetBrains). 101 words, ~258 tokens.

Download SKILL.mdSave it as .claude/skills/code-style/SKILL.md (or your agent's skills folder).

name: code-style
description: Code style rules for IntelliJ codebase. Use when writing or reviewing code for style compliance.

Code Style

Follow the IntelliJ Coding Guidelines with these IntelliJ-specific rules.

Language

ALWAYS use Kotlin for new files - Only use Java when modifying existing Java code
Use idiomatic Kotlin: extension functions, data classes, null safety
Mark experimental APIs with @ApiStatus.Experimental
Build scripts Kotlin style: Follow community/platform/build-scripts/kotlin-style-recommendations.md for build-scripts code:
- Use @JvmField for internal data class fields
- Use .put()/.get() instead of [] operator
- Use explicit HashMap/HashSet/LinkedHashMap instead of mutableMapOf()/mutableSetOf()

Formatting

Indentation: 2 spaces (4 for Go files)
Line length: 140 characters max
Braces: else/catch/finally on new lines
Only in /rustrover directory you must always use standard Kotlin formatting rules with 4 spaces indentation.

Files

Just SKILL.md in .agents/skills/code-style of JetBrains/MPS.

Open the folder on GitHubat commit a92f944

Compare with similar skills

Code Style 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.

Code Style compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Code Style this skillJetBrains/MPS	1.7k	—	~258	Automated safety check: Pass	Apache-2.0	today
Compose Multiplatform Patternsmonta-app/ocpp-emulator	180	5 repos	~2k	Automated safety check: Pass	Apache-2.0	6 days ago
Code StyleJetBrains/intellij-community	21k	—	~795	Automated safety check: Pass	Custom licence	today
Drop Platform SupportJetBrains/educational-plugin	181	—	~4k	Automated safety check: Pass	Apache-2.0	yesterday
Improve Code Coveragealexvanyo/composelife	267	—	~1.1k	Automated safety check: Pass	Apache-2.0	today
Kotlin Tooling Kotlin ToolchainKotlin/kotlin-agent-skills	1.1k	—	~2.4k	Automated safety check: Pass	Apache-2.0	8 days ago

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Works with

Questions about Code Style

What does Code Style do?

Code style rules for IntelliJ codebase. An agent skill from JetBrains/MPS. Code Style is an agent skill from JetBrains/MPS, published by the product's own GitHub organization. Code style rules for IntelliJ codebase.

When should I use Code Style?

Code Style fits situations like: reviewing code for style compliance; tasks that involve Plain language and style rules.

How do I install Code Style in Claude Code?

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

How do I install Code Style in Codex?

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

Can I use Code Style 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 code-style -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-style, .gemini/skills/code-style, .github/skills/code-style and .opencode/skills/code-style in your project.

What does Code Style need to run?

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

Does Code Style access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Code Style 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 Code Style use?

Code Style 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 Code Style use?

About 258 tokens (SKILL.md is roughly 1k 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 Code Style?

Skills that share tags, products or a category with Code Style: Compose Multiplatform Patterns (monta-app/ocpp-emulator, 180 stars), Code Style (JetBrains/intellij-community, 21k stars), Drop Platform Support (JetBrains/educational-plugin, 181 stars) and Improve Code Coverage (alexvanyo/composelife, 267 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Code Style?

JetBrains (a GitHub organization, an official publisher) maintains it in JetBrains/MPS, which has 1,660 GitHub stars. The repository holds 40 skills in this directory. The repository was last updated on October 7, 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.

Install Code Style

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Code Style

Language

Formatting

Files

Compare with similar skills

Similar skills

More from JetBrains/MPS

Related

Questions about Code Style