Chris's Skills Marketplace

A personal Claude Code marketplace bundling skills and plugins I rely on day-to-day — driving Iris architecture knowledge, filing NZ taxes, tracking timesheet hours, converting PDFs to ebooks, coaching my own prompts, coaching a 13-year-old through math homework, plus the Campaign Mode quest framework, its Six Animals advisory council, and the Mitchell Agentic Sprint validation pipeline.

What's in here

Plugin	What it does
iris	Drives the iris-cli tool — search, browse, ask AI, export from an Iris architecture repository. Triggers on iris/diagram/element/package/set/collection language and on iris … commands.
ir3-tax-return	Files an NZ individual IR3 income tax return for the 2026 tax year by driving the IRD myIR portal. Pauses for RealMe sign-in; refuses final Submit without explicit fresh consent.
timesheet	Interactive timesheet entry — collects work description, date, start/end times via prompts, calculates hours, appends to .campaign/timesheet.md. Supports clock-in / clock-out shortcuts.
pdf-to-ebook	Converts a PDF to ebook formats (epub, mobi, azw3) via Calibre.
agentic-coach	Interactive prompt-engineering coach — elevates vague prompts via Socratic dialogue, multiple transformation styles, and guided learning.
flow-coach	Interactive claude-flow orchestration coach — swarm topology, agent deployment, memory configuration, SPARC workflows.
math-coach	Coaching companion for a 13-year-old advanced math student — refuses to give answers, hooks interest with basketball / anime / advanced-math connections, catches him when he has skipped the workbook instructions.
doview-outcomes-answer	Answers outcomes-theory questions strictly from Dr Paul Duignan's DoView Planning Handbook. Faithful adaptation of Prompt A v1.1.9. Triggers on outcomes-theory questions, DoView analyses of strategy/proposal/plan docs, or any "what does outcomes theory say…" prompt.
doview-image-retriever	Retrieves and reproduces DoView handbook diagrams to accompany an outcomes-theory answer. Faithful adaptation of Prompt B v1.1.9 with a Mermaid-first overlay — pulls Mermaid blocks from the doview-book Markdown edition first, falling back to upstream PNG URLs. Pairs with doview-outcomes-answer.
six-animals	Six psychologically-grounded team-role agents (Bear, Cat, Owl, Puppy, Rabbit, Wolf) plus Simon as educator/supervisor. Prerequisite for the full Campaign Mode experience.
campaign-mode	Quest-based extension for AI-assisted work. Three NPC agents (Gandalf, Dragon, Guardian) provide mentorship, adversarial testing, and quality gates.
mitchell-agentic-sprint	AI-led 6-step sprint that takes an AI builder's idea from rough notion to investor-conversation-ready artefacts. Adversarial by default. Depends on six-animals + campaign-mode.

The first nine plugins ship from this repository — each one is a skill directory under skills/ that the marketplace lists as a separately-installable plugin. The last three are listed for convenience and source from their own repos.

Quick Start

Claude Cowork and Claude Code Desktop

1. From either the Cowork or Code tab in Claude Desktop, select + → Plugins → Add plugin.
2. Add marketplace — Select the By Anthropic dropdown, then select Add marketplace from GitHub and enter:

   https://github.com/cgbarlow/skills
   

3. Install plugins — find and install whichever plugins you want from the marketplace. Each one is independent — install just iris, just timesheet, or all ten.

Claude Code CLI

1. Install Claude Code (full guide):

   curl -fsSL https://claude.ai/install.sh | bash

2. Add the marketplace — in a Claude Code session:

   /plugin marketplace add cgbarlow/skills
   

3. Install the plugin you want (one at a time, or repeat for multiple):

   /plugin install iris@cgbarlow-skills
   /plugin install ir3-tax-return@cgbarlow-skills
   /plugin install timesheet@cgbarlow-skills
   /plugin install pdf-to-ebook@cgbarlow-skills
   /plugin install agentic-coach@cgbarlow-skills
   /plugin install flow-coach@cgbarlow-skills
   /plugin install math-coach@cgbarlow-skills
   /plugin install doview-outcomes-answer@cgbarlow-skills
   /plugin install doview-image-retriever@cgbarlow-skills
   /plugin install campaign-mode@cgbarlow-skills
   /plugin install six-animals@cgbarlow-skills
   /plugin install mitchell-agentic-sprint@cgbarlow-skills
   

   For the Mitchell Agentic Sprint specifically, you need all three of six-animals, campaign-mode, and mitchell-agentic-sprint — the Sprint depends on the other two for its NPC infrastructure.

4. Reload so the new skills are picked up by your current session:

   /reload-plugins
   

That's it. After install, the skills trigger automatically — you don't need to type their names. Say "use iris to search for payments" and the iris skill triggers. Say "I need to file my IR3" and ir3-tax-return triggers. List loaded skills any time with /skills.

Repository layout

skills/
├── .claude-plugin/
│   └── marketplace.json     # the marketplace (lists 10 plugins)
└── skills/
    ├── iris/{SKILL.md, README.md, evals/}
    ├── ir3-tax-return/
    ├── timesheet/
    ├── pdf-to-ebook/
    ├── agentic-coach/
    ├── flow-coach/
    ├── math-coach/
    ├── doview-outcomes-answer/
    └── doview-image-retriever/

Each marketplace entry lists the skill via "skills": ["./skills/<name>"], mirroring anthropics/skills. Installing a plugin clones the whole repo but loads only the named skill — fine on disk, and means each skill can be installed individually without forcing the whole bundle.

Contributing a new skill

1. Use skill-creator to scaffold the skill (it'll write a SKILL.md and evals).
2. Drop it in skills/<your-skill>/.
3. Add an entry to .claude-plugin/marketplace.json with "source": "./" and "skills": ["./skills/<your-skill>"].
4. Mention it in this README's table.

License

Each plugin carries its own license metadata in the marketplace listing. The default is CC-BY-SA 4.0 unless otherwise noted in the individual plugin directory.

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🤖 Built with Claude Code.