skill-authoring

A collection of Claude Code plugins for business automation, data analysis, and productivity.

Available Plugins

Plugins are organized by workstream under plugins/.

Workstream	Plugin	Description
bizdev	crm	CRM operations for companies, contacts, and notes via Attio
bizdev	research	Social media, web, and market research scraping
design	doc-format	AI-powered document, image, and flowchart generation
design	design-system	Casper Studios design system and Liquid Glass UI guidance
design	content-marketing	LinkedIn posts, video production, and YouTube tooling
engineering	code-review	Codebase audits for AI-agent readiness and code review
engineering	skill-authoring	Tooling for creating and updating Claude Code skills
engineering	marketplace-setup	Security hooks, safe .env loading, and privacy settings
engineering	git-pr	Planning, commits, PR management, code polishing, session handoffs
engineering	testing	Browser automation and testing
engineering	integrations	Google Workspace and universal third-party app integrations
engineering	cf-saas-stack	Cloudflare SaaS stack patterns - auth, database, workflows, emails, Stripe, and more
engineering	stack-patterns	Idiomatic usage patterns for React, TanStack Table, and better-all
product	data-analysis	Data analysis and storytelling for financial and RevOps contexts
product	csv-analyzer	CSV data analysis, profiling, and visualization
product	discovery	AI voice agent creation for client discovery and feedback calls
project-management	brain	Context management for consulting projects - company info, project PRDs, meeting transcripts
project-management	comms	Email triage and Slack channel automation

Installation

Install all skills globally (recommended)

# Install the skills CLI, then add everything from the marketplace
npx skills add https://github.com/Casper-Studios/casper-marketplace --all -g

The --all flag is idempotent — it installs new skills and overwrites existing ones. The CLI handles cloning, diffing, and symlinking internally.

Install a specific skill

npx skills add https://github.com/Casper-Studios/casper-marketplace --skill commit
npx skills add https://github.com/Casper-Studios/casper-marketplace --skill pr-comments

Install via /plugin command

# Add the Casper Studios marketplace
/plugin marketplace add Casper-Studios/casper-marketplace

# Install a specific plugin (see table above for the full list)
/plugin install brain
/plugin install data-analysis
/plugin install git-pr
/plugin install stack-patterns
/plugin install cf-saas-stack

Auto-sync on session start

Add sync-skills.sh as a Claude Code hook to keep all marketplace plugins up-to-date automatically:

// ~/.claude/settings.json
{
  "hooks": {
    "SessionStart": [
      {
        "matcher": "startup",
        "hooks": [
          {
            "type": "command",
            "command": "bash /path/to/sync-skills.sh",
            "timeout": 60,
            "async": true
          }
        ]
      }
    ]
  }
}

Plugin Structure

Plugins are grouped by workstream under plugins/<workstream>/<plugin-name>/. Each plugin follows the standard Claude Code plugin structure:

plugins/<workstream>/<plugin-name>/
├── .claude-plugin/
│   └── plugin.json          # Plugin manifest
├── skills/                  # Skills with SKILL.md and references/
├── commands/                # Slash commands
├── scripts/                 # Utility scripts
└── README.md               # Plugin documentation

Contributing

To add a new plugin:

1. Create a new directory under plugins/<workstream>/ (add a new workstream folder if none fits)
2. Add the required .claude-plugin/plugin.json manifest
3. Add commands, scripts, and documentation
4. Submit a PR

License

MIT