App Icon Expert

ClaudeSkills

A growing collection of Claude Code skills, distributed as a plugin marketplace.

What's a skill?

A skill is a folder with a SKILL.md file that teaches Claude how to handle a specific task — design, scaffolding, debugging, code review, anything procedural. The model auto-invokes it when its description matches what you're trying to do, or you can call it manually with /skill-name.

Available plugins

Plugin	What it does
app-icon-expert	Design app icons / favicons / logo marks the right way. Covers SVG construction, dark-mode handling, the modern multi-format favicon set, PWA manifest, iOS/Android rules, and a verification checklist.

More to come.

Install (one-line)

Inside Claude Code:

/plugin marketplace add PianoNic/ClaudeSkills
/plugin install app-icon-expert@ClaudeSkills

Then /reload-plugins (or restart Claude Code) and the skill is live.

Manual install (without the marketplace)

If you don't want to add the marketplace, copy a single skill folder into your skill directory:

Scope	Path	Effect
Personal	~/.claude/skills/<name>/	available everywhere on your machine
Project	.claude/skills/<name>/	committed with the project

git clone https://github.com/PianoNic/ClaudeSkills.git
cp -r ClaudeSkills/plugins/app-icon-expert/skills/app-icon-expert ~/.claude/skills/

Verify it loaded

Inside Claude Code, type / and look for the skill name in the autocomplete list, or ask Claude "list available skills".

Contributing

PRs welcome. Each plugin lives under plugins/<kebab-case-name>/ with this layout:

plugins/<plugin-name>/
├── .claude-plugin/
│   └── plugin.json
└── skills/
    └── <skill-name>/
        └── SKILL.md

Then add an entry to .claude-plugin/marketplace.json so the plugin shows up in the catalog.

SKILL.md frontmatter must include at least:

---
name: skill-name
description: Concrete description of when this skill should be used.
---

Keep SKILL.md under ~500 lines. Bundle longer reference material as separate files in the skill folder and reference them from SKILL.md.

License

MIT — use it, fork it, ship it.