anthropic-dev-skills

agent-workshop

A plugin library and development framework for Claude Code. This repo serves two purposes:

1. Plugin Library — A custom marketplace of modular Claude Code plugins (skills, hooks, agents, MCP configs) installable via /plugin install.
2. Cookbook — Golden baseline configurations (CLAUDE.md templates, hook recipes, MCP setups) you can pull into any new project.

Quick Start

Install Plugins from This Marketplace

# Add the marketplace
/plugin marketplace add ats-kinoshita-iso/agent-workshop

# Browse and install plugins
/plugin install planning@agent-workshop

Use Cookbook Recipes

Browse cookbook/ and copy what you need into your project:

• cookbook/claude-md/ — CLAUDE.md templates by project type
• cookbook/hooks/ — Reusable hook recipes for .claude/settings.json
• cookbook/mcp/ — MCP server configurations for common integrations

Directory Structure

.claude-plugin/       # Marketplace definition (marketplace.json)
plugins/              # Stable, packaged Claude Code plugins
cookbook/              # Golden baseline configs (copy into your projects)
  claude-md/          #   CLAUDE.md templates
  hooks/              #   Hook recipes
  mcp/                #   MCP server configs
tools/                # Development & validation tooling
tests/                # Plugin validation gates

Plugin Development Lifecycle

1. Develop in .claude/          →  Iterate locally with Claude Code
2. Validate with test suite     →  uv run pytest
3. Package as plugin            →  Create plugin.json + SKILL.md in plugins/
4. Auto-register in marketplace →  marketplace_gen.py updates marketplace.json
5. Users install from here      →  /plugin marketplace add ats-kinoshita-iso/agent-workshop

Available Plugins

Workshop Plugins

Plugin	Description	Version
code-quality-gate	Unified quality orchestrator (lint, format, typecheck, test)	1.0.0
context-sync	Keeps CLAUDE.md files in sync with the codebase	1.0.0
plan-manager	Plan lifecycle management with gate tracking and archival	1.0.0
planning	Phased implementation plans with gates and tests	2.0.0
test-quality	Test generation, auditing, and knowledge extraction	1.0.0
workspace-clean	Workspace hygiene checks and cleanup	1.0.0

Anthropic Skills (imported from anthropics/skills)

Plugin	Skills	License
anthropic-document-skills	docx, pdf, pptx, xlsx	Source-available
anthropic-creative-skills	algorithmic-art, brand-guidelines, canvas-design, frontend-design, slack-gif-creator, theme-factory	Apache 2.0
anthropic-dev-skills	claude-api, mcp-builder, skill-creator, web-artifacts-builder, webapp-testing	Apache 2.0
anthropic-enterprise-skills	doc-coauthoring, internal-comms	Apache 2.0

Stack

• Python: managed with uv
• JS/TS: managed with bun

Commands

Python

• Install deps: uv sync
• Run tests: uv run pytest
• Lint: uv run ruff check .
• Format: uv run ruff format .
• Type check: uv run mypy .

JS/TS

• Install deps: bun install
• Run tests: bun test
• Lint + format: bunx biome check --write .

Contributing a Plugin

1. Develop your extension in .claude/ (skills, hooks, agents, etc.)
2. When stable, create a directory under plugins/<your-plugin>/
3. Add .claude-plugin/plugin.json with name, description, version, keywords
4. Add your skill/hook/agent/MCP files following the Claude Code plugin format
5. Run uv run pytest to validate structure
6. Run uv run python tools/marketplace_gen.py to update the marketplace catalog