Use when the user runs /ruby-upgrade-toolkit:rules or asks to add, list, validate, show, remove, disable, enable, or explain project-specific upgrade rules — gem pins, gem swaps, private-source substitutions (Rails LTS, Sidekiq Pro), verification gates (Brakeman, Reek), policy overrides. Reads and writes .ruby-upgrade-toolkit/rules.yml at the project root.
Englishmarkuplint is a comprehensive HTML linter designed for all markup developers. It enforces accessibility, spec compliance, and best practices across HTML, JSX, Vue, Svelte, Astro, PHP, Pug, and more template languages through a pluggable parser architecture.
English
AGENT SKILLS ATLASIncludes Custom Rules and Markuplint HTML Linter.
Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLISupported by the Atlas install prompt. Skill-specific requirements vary.
Pack stats
What’s included
Custom Rules
Use when the user runs /ruby-upgrade-toolkit:rules or asks to add, list, validate, show, remove, disable, enable, or explain project-specific upgrade rules — gem pins, gem swaps, private-source substitutions (Rails LTS, Sidekiq Pro), verification gates (Brakeman, Reek), policy overrides. Reads and writes .ruby-upgrade-toolkit/rules.yml at the project root.
Markuplint HTML Linter
markuplint is a comprehensive HTML linter designed for all markup developers. It enforces accessibility, spec compliance, and best practices across HTML, JSX, Vue, Svelte, Astro, PHP, Pug, and more template languages through a pluggable parser architecture.
Quick start
- Choose your skills. Select individual skills above, or choose the entire pack.
- Copy the install prompt. Use Copy install prompt above the list.
- Send it to your agent. Paste into your coding agent’s chat. Your agent reviews the source and guides the setup.
Try it with your agent
After installation, start with a request like:
Use the Custom Rules skill to help with my task.
Ask me for the context you need before getting started.Requirements & license
- A coding agent that can access your project files and install skills.
- Your agent checks each skill’s instructions, dependencies, and permissions during setup.
- License details are not provided in these listings. Check the author’s terms before using the skills.