Claude Code Custom Plugins & Skills

Custom plugins and skills for Claude Code.

Available

| Name | Type | Description | Install Command | |------|------|-------------|-----------------| | deckling | Plugin | Generate PPTX presentations using Anthropic Platform Skills API | /plugin install deckling@ccc | | mvp-launch | Plugin | MVP launch readiness checker with /launch-check command | /plugin install mvp-launch@ccc | | product-management | Plugin | AI-native PM: competitor research, gap analysis, WINNING prioritization | /plugin install product-management@ccc | | excalidraw | Skill | Generate architecture diagrams as .excalidraw files with optional PNG/SVG export | /plugin install ccc-skills@ccc | | streak | Skill + Commands | Universal challenge tracker with /streak, /streak-new, etc. | /plugin install ccc-skills@ccc |

Installation

# Add this repo as a marketplace
/plugin marketplace add ooiyeefei/ccc

# Install the deckling plugin (has /deckling command)
/plugin install deckling@ccc

# Install the skills collection (includes excalidraw and streak)
/plugin install ccc-skills@ccc

Plugin: Deckling

Generate and refine PowerPoint presentations using Anthropic's Platform Skills API.

/deckling "Quarterly Review - 3 slides"
/deckling "Change title to 'Q4 Results'" --refine quarterly.pptx

See plugins/deckling/README.md for full documentation.

Plugin: MVP Launch

Analyze web app codebases against a battle-tested 10-point MVP launch checklist. Based on "Realistic MVP Launch Checklist (from building 30+ apps)".

/launch-check

The 10-Point Checklist:

Stripe Setup (webhooks, trials, failed payments)
Mobile-First Design (real device testing)
Smooth Onboarding (minimal steps, fast first win)
AI & Automation Stability (retries, error handling)
Critical Emails (welcome, trial-ending, failed payment)
Error Logging (catch bugs before users)
User Feedback Loop (simple form or tool)
Auth & Roles (secure pages, basic roles)
Custom Domain with SSL (no dev URLs)
Real Database & Backups (automated backups)

Philosophy: "Don't overbuild. Just make it stable, usable, and something people can trust."

See plugins/mvp-launch/README.md for full documentation.

Skill: Excalidraw Generator

Generate architecture diagrams from any codebase as .excalidraw files, with optional PNG and SVG export.

After installing ccc-skills, just ask Claude Code:

"Generate an architecture diagram for this project"
"Create an excalidraw diagram of the system"
"Visualize this codebase as an excalidraw file"
"Export this diagram to PNG"

Features:

Analyzes any codebase (Node.js, Python, Java, Go, etc.)
No prerequisites - works without existing diagrams or Terraform
Proper 90-degree elbow arrows (not curved)
Color-coded components by type (database, API, storage, etc.)
Dynamic IDs and labels based on discovered components
PNG/SVG export via Playwright and @excalidraw/utils (no manual upload needed)

See skills/excalidraw/README.md for quick start guide. See skills/excalidraw/SKILL.md for full documentation.

Streak - Challenge Tracker

Universal challenge tracker with flexible cadence, intelligent insights, and cross-challenge learning detection.

Slash Commands (Recommended)

After installing ccc-skills, use these commands for reliable, deterministic triggering:

/streak              # Check in to active challenge
/streak-new          # Create a new challenge (guided)
/streak-list         # List all challenges
/streak-switch NAME  # Switch active challenge
/streak-stats        # View progress and achievements
/streak-insights     # Cross-challenge insights

Natural Language (Alternative)

You can also ask Claude Code naturally - it will invoke the skill when relevant:

"Check in to my challenge"
"Start a new streak"
"Show my stats"

Features

Universal: Works for any challenge type (learning, habits, building, fitness, creative, custom)
Flexible Cadence: Daily, weekly, or custom N-day intervals per challenge
AI-Powered Insights: Auto-detects compound learning and semantic connections
Achievements: Streak badges and milestone rewards
Calendar Export: Optional .ics file for calendar reminders
Zero Config: Works locally with no external dependencies

Example Challenges

30 Days of Coding
Read 12 Books This Year
Morning Meditation Habit
Daily Sketching Practice

See skills/streak/README.md for quick start guide. See skills/streak/SKILL.md for full documentation.

Plugin: Product Management

AI-native product management for startups. Process signals, not features.

After installing ccc-skills, just ask Claude Code:

"Analyze my product"
"Research competitors"
"Find feature gaps we should build"
"What should we build next?"

Key Commands

/pm analyze     # Deep product understanding
/pm landscape   # Market overview + competitors
/pm gaps        # Batch gap analysis with WINNING scores
/pm file        # Create GitHub Issues for top priorities
/pm roadmap     # Organize into Now/Next/Later

WINNING Filter

Prioritize with objective scoring: WINNING = Pain × Timing × Execution

40-60: FILE (high conviction)
25-39: WAIT (monitor)
0-24: SKIP (not worth it)

spec-kit Integration

This skill handles WHAT to build (product discovery). For HOW to build, use spec-kit:

/pm file → GitHub Issue → /speckit.specify → /speckit.plan → /speckit.implement

The GitHub Issue IS the handoff—no extra command needed.

See plugins/product-management/README.md for full documentation.

Contributing

We welcome contributions! CCC follows a hybrid contribution model:

| Contribution Type | Process | |-------------------|---------| | Bug fixes | PRs welcome directly | | Documentation | PRs welcome directly | | New features | Open issue first for discussion | | New skills/plugins | Open issue first for discussion |

Quick start:

Fork the repo
Create a branch
Make changes and test with Claude Code
Submit a PR

See CONTRIBUTING.md for detailed guidelines.

Good First Issues

Look for issues labeled good first issue - they're great for getting started!

Support

If you find CCC useful, consider supporting its development:

License

MIT

Ccc

Install / Use

README