Agent skill

Rubocop

Run RuboCop linting and fix offenses for the redmineaihelper plugin

MITAuto-check passedDevelopment

Install Rubocop

skills CLI

$ npx skills add haru/redmine_ai_helper --skill rubocop -a claude-code

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

GitHub CLI

$ gh skill install haru/redmine_ai_helper rubocop --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/haru/redmine_ai_helper.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/rubocop .claude/skills/rubocop && 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 "rubocop" agent skill from https://github.com/haru/redmine_ai_helper/tree/main/.claude/skills/rubocop into .claude/skills/rubocop/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rubocop", 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/haru/redmine_ai_helper/tree/main/.claude/skills/rubocop

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 haru/redmine_ai_helper --skill rubocop -a codex

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

GitHub CLI

$ gh skill install haru/redmine_ai_helper rubocop --agent codex

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

Manual copy

$ git clone --depth 1 https://github.com/haru/redmine_ai_helper.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/rubocop .agents/skills/rubocop && 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 "rubocop" agent skill from https://github.com/haru/redmine_ai_helper/tree/main/.claude/skills/rubocop into .agents/skills/rubocop/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rubocop", 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 haru/redmine_ai_helper --skill rubocop -a cursor

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

GitHub CLI

$ gh skill install haru/redmine_ai_helper rubocop --agent cursor

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

Manual copy

$ git clone --depth 1 https://github.com/haru/redmine_ai_helper.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/rubocop .cursor/skills/rubocop && 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 "rubocop" agent skill from https://github.com/haru/redmine_ai_helper/tree/main/.claude/skills/rubocop into .cursor/skills/rubocop/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rubocop", 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/haru/redmine_ai_helper.git --path .claude/skills/rubocop

--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 haru/redmine_ai_helper --skill rubocop -a gemini-cli

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

GitHub CLI

$ gh skill install haru/redmine_ai_helper rubocop --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/haru/redmine_ai_helper.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/rubocop .gemini/skills/rubocop && 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 "rubocop" agent skill from https://github.com/haru/redmine_ai_helper/tree/main/.claude/skills/rubocop into .gemini/skills/rubocop/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rubocop", 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 haru/redmine_ai_helper rubocop

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 haru/redmine_ai_helper --skill rubocop -a github-copilot

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

Manual copy

$ git clone --depth 1 https://github.com/haru/redmine_ai_helper.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/rubocop .github/skills/rubocop && 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 "rubocop" agent skill from https://github.com/haru/redmine_ai_helper/tree/main/.claude/skills/rubocop into .github/skills/rubocop/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rubocop", 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 haru/redmine_ai_helper --skill rubocop -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 haru/redmine_ai_helper rubocop --agent opencode

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

Manual copy

$ git clone --depth 1 https://github.com/haru/redmine_ai_helper.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/rubocop .opencode/skills/rubocop && 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 "rubocop" agent skill from https://github.com/haru/redmine_ai_helper/tree/main/.claude/skills/rubocop into .opencode/skills/rubocop/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rubocop", 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: rubocop
GitHub stars: 106
Token cost: ~717 tokens
SKILL.md length: 231 words
Files: 1
Skills in repo: 21
Repo updated: Oct 9, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Run RuboCop linting and fix offenses for the redmineaihelper plugin

Works in 4 steps: Run RuboCop → Auto-fix safe offenses → Manually fix remaining offenses → …
Tasks that involve Linting and formatting
SKILL.md covers Workflow and Common Cases
Calls bundle and git

What it does

Rubocop is an agent skill from haru/redmine_ai_helper. Run RuboCop linting and fix offenses for the redmineaihelper plugin

Its SKILL.md is about 720 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 Linting and formatting and Backend development. The repository describes itself as: A Redmine plugin that adds AI agents, MCP Server, smart completion, and vector search. The licence is MIT.

When your agent uses it

Tasks that involve Linting and formatting
Tasks that involve Backend development

Example prompts

“/rubocop”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

Run RuboCop
Auto-fix safe offenses
Manually fix remaining offenses
Run tests to verify

What it can do on your machine

Read from SKILL.md and the folder at commit 3cd87d6. 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
Shell commands in SKILL.md call:
- bundle
- git
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
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

Rubocop loads about 717 tokens when it runs. Until then it costs about 19 tokens; SKILL.md has 231 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~19
When it runs · the whole SKILL.md, loaded when a task matches: ~717

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 haru/redmine_ai_helper at commit 3cd87d6, republished under its MIT licence (© haru). 231 words, ~717 tokens.

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

name: rubocop
description: Run RuboCop linting and fix offenses for the redmine_ai_helper plugin

RuboCop Check and Fix

Run RuboCop on the plugin codebase, auto-fix what is safe, and manually resolve remaining offenses.

Workflow

Step 1: Run RuboCop

bash

rubocop 2>&1

Step 2: Auto-fix safe offenses

bash

rubocop -A --except Rails/ActionControllerTestCase 2>&1

Exclude Rails/ActionControllerTestCase — Redmine plugin tests require ActionController::TestCase. Converting to ActionDispatch::IntegrationTest breaks the tests helper method and other controller-specific APIs.

Step 3: Manually fix remaining offenses

Address any offenses that remain after auto-correction using the guidelines below.

IMPORTANT: Never modify .rubocop.yml thresholds (Max: values) or Exclude: settings without explicit user approval. If offenses cannot be fixed in the source code, report them to the user and ask how to proceed. Do not raise Max: values, add new Exclude: entries, or run git checkout -- .rubocop.yml to work around violations.

Cop	Action
`Rails/Pluck`	If called on a plain Ruby array (not ActiveRecord), add `# rubocop:disable Rails/Pluck` inline
`Rails/RedundantPresenceValidationOnBelongsTo`	If tests assert `errors[:foreign_key_id]`, the explicit validation is needed — add `# rubocop:disable` inline
`Rails/I18nLocaleAssignment`	Rewrite `I18n.locale = x` as an `I18n.with_locale(x) { ... }` block
Cop disabled project-wide	Add `Enabled: false` under the cop name in `.rubocop.yml` — only with user approval

Step 4: Run tests to verify

bash

bundle exec rake redmine:plugins:test NAME=redmine_ai_helper 2>&1 | tail -20

Confirm 0 failures and 0 errors before finishing.

Common Cases

`Rails/ActionControllerTestCase`

Already disabled in .rubocop.yml. No changes needed.

yaml

Rails/ActionControllerTestCase:
  Enabled: false

`Rails/RedundantPresenceValidationOnBelongsTo`

The implicit belongs_to validation puts errors on :association_name, not :foreign_key_id. If tests check errors[:project_id] or errors[:user_id], keep the explicit validation:

ruby

validates :project_id, presence: true # rubocop:disable Rails/RedundantPresenceValidationOnBelongsTo
validates :user_id, presence: true    # rubocop:disable Rails/RedundantPresenceValidationOnBelongsTo

`Rails/Pluck`

.pluck is an ActiveRecord method and does not work on plain Ruby arrays. Disable inline:

ruby

issue_counts = members_workload.map { |m| m[:assigned_issues] } # rubocop:disable Rails/Pluck

`Rails/I18nLocaleAssignment`

ruby

# Before
original_locale = I18n.locale
I18n.locale = :ja
# ... test code
ensure
  I18n.locale = original_locale

# After
I18n.with_locale(:ja) do
  # ... test code
end

Files

Just SKILL.md in .claude/skills/rubocop of haru/redmine_ai_helper.

Open the folder on GitHubat commit 3cd87d6

Compare with similar skills

Rubocop 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.

Rubocop compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Rubocop this skillharu/redmine_ai_helper	106	—	~717	Automated safety check: Pass	MIT	today
Update Dependenciesalorence/django-modern-rpc	111	—	~1.3k	Automated safety check: Pass	MIT	2 days ago
Python Prodavila7/claude-code-templates	32k	8 repos	~1.8k	Automated safety check: Pass	MIT	today
Htmlhintmanagedcode/dotnet-skills	486	—	~1.2k	Automated safety check: Pass	MIT	today
Typescript SecurityHoangNguyen0403/agent-skills-standard	571	—	~817	Automated safety check: Notes	MIT	today
Infer Conventionsanonaddy/anonaddy	4.9k	5 repos	~3.1k	Automated safety check: Pass	MIT	3 days ago

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Questions about Rubocop

What does Rubocop do?

Run RuboCop linting and fix offenses for the redmineaihelper plugin. Rubocop is an agent skill from haru/redmine_ai_helper.

When should I use Rubocop?

Rubocop fits situations like: tasks that involve Linting and formatting; tasks that involve Backend development.

How do I install Rubocop in Claude Code?

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

How do I install Rubocop in Codex?

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

Can I use Rubocop 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 haru/redmine_ai_helper --skill rubocop -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rubocop, .gemini/skills/rubocop, .github/skills/rubocop and .opencode/skills/rubocop in your project.

What does Rubocop need to run?

Going by SKILL.md and its folder, Rubocop needs the command-line tools its instructions call (bundle and git).

Does Rubocop access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Rubocop 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 Rubocop use?

Rubocop is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Rubocop use?

About 717 tokens (SKILL.md is roughly 2.9k 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 Rubocop?

Skills that share tags, products or a category with Rubocop: Update Dependencies (alorence/django-modern-rpc, 111 stars), Python Pro (davila7/claude-code-templates, 32k stars), Htmlhint (managedcode/dotnet-skills, 486 stars) and Typescript Security (HoangNguyen0403/agent-skills-standard, 571 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Rubocop?

haru (a GitHub user) maintains it in haru/redmine_ai_helper, which has 106 GitHub stars. The repository holds 21 skills in this directory. The repository was last updated on October 9, 2026.

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

Install Rubocop

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

RuboCop Check and Fix

Workflow

Step 1: Run RuboCop

Step 2: Auto-fix safe offenses

Step 3: Manually fix remaining offenses

Step 4: Run tests to verify

Common Cases

Rails/ActionControllerTestCase

Rails/RedundantPresenceValidationOnBelongsTo

Rails/Pluck

Rails/I18nLocaleAssignment

Files

Compare with similar skills

Similar skills

More from haru/redmine_ai_helper

Related

Questions about Rubocop

`Rails/ActionControllerTestCase`

`Rails/RedundantPresenceValidationOnBelongsTo`

`Rails/Pluck`

`Rails/I18nLocaleAssignment`