Configuring Horizon
coollabsio/coolify
A skill your agent uses whenever the user mentions Horizon by name in a Laravel context.
This skill should be used when the user asks to "check config diff", "compare upstream config", "diff rubocop config", "sync with Rails rubocop", or wants to see differences between the upstream…
Install Check Config Diff
$ npx skills add toshimaru/rubocop-rails_config --skill check-config-diff -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install toshimaru/rubocop-rails_config check-config-diff --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/toshimaru/rubocop-rails_config.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/check-config-diff .claude/skills/check-config-diff && rm -rf skills-srcUse ~/.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/
Install the "check-config-diff" agent skill from https://github.com/toshimaru/rubocop-rails_config/tree/main/.agents/skills/check-config-diff into .claude/skills/check-config-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-config-diff", 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 install https://github.com/toshimaru/rubocop-rails_config/tree/main/.agents/skills/check-config-diffType 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.
$ npx skills add toshimaru/rubocop-rails_config --skill check-config-diff -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install toshimaru/rubocop-rails_config check-config-diff --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/toshimaru/rubocop-rails_config.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/check-config-diff .agents/skills/check-config-diff && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "check-config-diff" agent skill from https://github.com/toshimaru/rubocop-rails_config/tree/main/.agents/skills/check-config-diff into .agents/skills/check-config-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-config-diff", 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.
$ npx skills add toshimaru/rubocop-rails_config --skill check-config-diff -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install toshimaru/rubocop-rails_config check-config-diff --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/toshimaru/rubocop-rails_config.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/check-config-diff .cursor/skills/check-config-diff && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "check-config-diff" agent skill from https://github.com/toshimaru/rubocop-rails_config/tree/main/.agents/skills/check-config-diff into .cursor/skills/check-config-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-config-diff", 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 https://github.com/toshimaru/rubocop-rails_config.git --path .agents/skills/check-config-diff--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add toshimaru/rubocop-rails_config --skill check-config-diff -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install toshimaru/rubocop-rails_config check-config-diff --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/toshimaru/rubocop-rails_config.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/check-config-diff .gemini/skills/check-config-diff && rm -rf skills-srcUse ~/.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/
Install the "check-config-diff" agent skill from https://github.com/toshimaru/rubocop-rails_config/tree/main/.agents/skills/check-config-diff into .gemini/skills/check-config-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-config-diff", 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.
$ gh skill install toshimaru/rubocop-rails_config check-config-diffInstalls 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).
$ npx skills add toshimaru/rubocop-rails_config --skill check-config-diff -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/toshimaru/rubocop-rails_config.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/check-config-diff .github/skills/check-config-diff && rm -rf skills-srcUse ~/.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/
Install the "check-config-diff" agent skill from https://github.com/toshimaru/rubocop-rails_config/tree/main/.agents/skills/check-config-diff into .github/skills/check-config-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-config-diff", 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.
$ npx skills add toshimaru/rubocop-rails_config --skill check-config-diff -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install toshimaru/rubocop-rails_config check-config-diff --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/toshimaru/rubocop-rails_config.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/check-config-diff .opencode/skills/check-config-diff && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "check-config-diff" agent skill from https://github.com/toshimaru/rubocop-rails_config/tree/main/.agents/skills/check-config-diff into .opencode/skills/check-config-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-config-diff", 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
check-config-diff- GitHub stars
- 149
- Token cost
- ~287 tokens
- SKILL.md length
- 95 words
- Files
- 1
- Skills in repo
- 2
- Repo updated
- First seen
- Licence
- MIT
At a glance
This skill should be used when the user asks to "check config diff", "compare upstream config", "diff rubocop config", "sync with Rails rubocop", or wants to see differences between the upstream…
- Works in 3 steps: Fetch the upstream Rails RuboCop… → Read the local configuration from:… → Compare both configurations and report
- Asks to check config diff
- SKILL.md covers Instructions and Output Format
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Check Config Diff is an agent skill from toshimaru/rubocop-rails_config. This skill should be used when the user asks to "check config diff", "compare upstream config", "diff rubocop config", "sync with Rails rubocop", or wants to see differences between the upstream Rails .rubocop.yml and this repository's config/rails.yml.
Its SKILL.md is about 290 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 Backend & APIs, covering Backend development. The repository describes itself as: RuboCop configuration which has the same code style checking as official Ruby on Rails. The licence is MIT.
When your agent uses it
- Asks to check config diff
- Compare upstream config
- Diff rubocop config
- Sync with Rails rubocop
Example prompts
- “check config diff”
- “compare upstream config”
- “diff rubocop config”
- “/check-config-diff”
Requirements
- Pre-approved tools (allowed-tools): WebFetch, Read
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Fetch the upstream Rails RuboCop configuration from: https://raw.githubusercontent.com/rails/rails/main/.rubocop.yml
- Read the local configuration from: config/rails.yml
- Compare both configurations and report
What it can do on your machine
Read from SKILL.md and the folder at commit 5ab79eb. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
WebFetchRead
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):
raw.githubusercontent.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
Check Config Diff loads about 287 tokens when it runs. Until then it costs about 68 tokens; SKILL.md has 95 words of instructions outside code blocks.
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 toshimaru/rubocop-rails_config at commit 5ab79eb, republished under its MIT licence (© toshimaru). 95 words, ~287 tokens.
Download SKILL.mdSave it as
.claude/skills/check-config-diff/SKILL.md (or your agent's skills folder).- name
- check-config-diff
- description
- This skill should be used when the user asks to "check config diff", "compare upstream config", "diff rubocop config", "sync with Rails rubocop", or wants to see differences between the upstream Rails .rubocop.yml and this repository's config/rails.yml.
- allowed-tools
- WebFetch, Read
Diff Upstream RuboCop Config
Compare the upstream Rails RuboCop configuration with this repository's config/rails.yml.
Instructions
- Fetch the upstream Rails RuboCop configuration from: https://raw.githubusercontent.com/rails/rails/main/.rubocop.yml
- Read the local configuration from:
config/rails.yml - Compare both configurations and report:
- Cops/settings present in upstream but missing in local
- Cops/settings present in local but missing in upstream
- Cops/settings with different values between upstream and local
- Note any intentional local additions (marked with comments like "Additional ... by rubocop-rails_config")
Output Format
Present the differences in a clear table or list format, grouped by category (AllCops, Layout, Style, Lint, Performance, Minitest, etc.).
© toshimaru, MIT. 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/check-config-diff of toshimaru/rubocop-rails_config.
Open the folder on GitHubat commit 5ab79eb
Compare with similar skills
Check Config Diff 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Check Config Diff this skilltoshimaru/rubocop-rails_config | 149 | — | ~287 | Automated safety check: Pass | MIT | |
| Configuring Horizoncoollabsio/coolify | 63k | 4 repos | ~898 | Automated safety check: Pass | MIT | |
| Fortify Developmentcoollabsio/coolify | 63k | 4 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Node Backend Development Guidelinesdiet103/claude-code-infrastructure-showcase | 10k | 2 repos | ~2k | Automated safety check: Pass | MIT | |
| Laravel Best Practicesanonaddy/anonaddy | 4.9k | 13 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Laravel Actionscoollabsio/coolify | 63k | — | ~2.4k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Fortify Development
coollabsio/coolify
ACTIVATE when the user works on authentication in Laravel. An agent skill from coollabsio/coolify.
Node Backend Development Guidelines
diet103/claude-code-infrastructure-showcase
Sets layered architecture and coding rules for Node.js, Express and TypeScript microservices, covering routes, controllers, services, repositories, Prisma, Sentry and Zod.
Laravel Best Practices
anonaddy/anonaddy
Apply this skill whenever writing, reviewing, or refactoring Laravel PHP code.
Laravel Actions
coollabsio/coolify
Build, refactor, and troubleshoot Laravel Actions using lorisleiva/laravel-actions.
Nodejs Backend Patterns
ever-works/ever-works
Build production-ready Node.js backend services with Express/Fastify, implementing middleware patterns, error handling, authentication, database integration, and API design best practices.
More from toshimaru/rubocop-rails_config
Why This Change
toshimaru/rubocop-rails_config
A skill your agent uses when the user asks "why was this cop added/removed", "find upstream PR for a cop", "trace cop change in Rails", "what's the reason for this cop", or wants to find the…
Related
Categories
Questions about Check Config Diff
What does Check Config Diff do?
This skill should be used when the user asks to "check config diff", "compare upstream config", "diff rubocop config", "sync with Rails rubocop", or wants to see differences between the upstream…. Check Config Diff is an agent skill from toshimaru/rubocop-rails_config.yml.
When should I use Check Config Diff?
Check Config Diff fits situations like: asks to check config diff; compare upstream config; diff rubocop config; sync with Rails rubocop.
How do I install Check Config Diff in Claude Code?
Run `npx skills add toshimaru/rubocop-rails_config --skill check-config-diff -a claude-code`. Or copy the skill folder (.agents/skills/check-config-diff in toshimaru/rubocop-rails_config) into .claude/skills/check-config-diff in your project. Claude Code loads it when a task matches its description.
How do I install Check Config Diff in Codex?
Run `npx skills add toshimaru/rubocop-rails_config --skill check-config-diff -a codex`. Or copy the skill folder (.agents/skills/check-config-diff in toshimaru/rubocop-rails_config) into .agents/skills/check-config-diff in your project. Codex loads it when a task matches its description.
Can I use Check Config Diff 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 toshimaru/rubocop-rails_config --skill check-config-diff -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/check-config-diff, .gemini/skills/check-config-diff, .github/skills/check-config-diff and .opencode/skills/check-config-diff in your project.
What does Check Config Diff need to run?
SKILL.md names no scripts, command-line tools or credentials: Check Config Diff is instructions for the agent only. Its frontmatter pre-approves these tools: WebFetch, Read.
Does Check Config Diff access the network?
SKILL.md names 1 domain. As links in the text: raw.githubusercontent.com. This is read from the text; nothing was executed.
Is Check Config Diff 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 Check Config Diff use?
Check Config Diff 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 Check Config Diff use?
About 287 tokens (SKILL.md is roughly 1.1k 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 Check Config Diff?
Skills that share tags, products or a category with Check Config Diff: Configuring Horizon (coollabsio/coolify, 63k stars), Fortify Development (coollabsio/coolify, 63k stars), Node Backend Development Guidelines (diet103/claude-code-infrastructure-showcase, 10k stars) and Laravel Best Practices (anonaddy/anonaddy, 4.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Check Config Diff?
toshimaru (a GitHub user) maintains it in toshimaru/rubocop-rails_config, which has 149 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on July 4, 2026.
Source: toshimaru/rubocop-rails_config on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.