By Wenjix
Collection of skills and commands: Excalidraw diagrams, Streak challenge tracker, agentic system design, self-improving systems, htmldrop HTML sharing, landing page GTM, and UAT testing
Check in to your active challenge - log progress, get insights
Create a new challenge with guided setup (learning, building, fitness, habit, creative, custom)
List all your challenges with status, streak, and progress
Switch to a different active challenge
View progress statistics, streaks, and achievements for your challenge
Prescriptive Q&A workflow for designing agentic pipelines, multi-model councils, sub-agent hierarchies, and tool-loop hardening for any domain. Use when the user asks to "design an agent", "design a multi-agent system", "should I use a council/debate", "build a [domain] review agent" (HAZOP, finance, tutorial, marketing, compliance, accounting), "real agency vs workflow", "how to add sub-agents", "AI for [domain] review", or names patterns like "orchestrator-worker", "evaluator-optimizer", "Magentic", "ReAct", "plan-and-execute", "handoffs". Walks the user through 12 stages one question at a time and emits a buildable design doc with citations. Do NOT use for general coding questions, single-shot prompt tuning, or bare "use Claude to do X" requests with no agency requirement.
Generate architecture diagrams as .excalidraw files from codebase analysis, with optional PNG/SVG export. Use when the user asks to create architecture diagrams, system diagrams, visualize codebase structure, generate excalidraw files, export excalidraw diagrams to PNG or SVG, or convert .excalidraw files to image formats.
This skill should be used when the user asks to "share this HTML", "publish HTML", "get a link for this file", "share this report", "make this shareable", "upload this HTML", or wants to publish any HTML artifact for others to view. ALSO use it for collaborative review on an HTML doc/spec/report — triggers include "get feedback on this", "let reviewers comment", "collect feedback", "share for review", "let people annotate this", "synthesize the feedback", "converge the feedback", "what did reviewers say", "incorporate the comments", or "improve this from the feedback". Wraps Surge.sh for zero-cost hosting with guided privacy options, plus an embedded annotation + AI converge workflow.
Build and update high-converting SaaS landing pages with GTM-aware marketing copy, competitive positioning, and sales psychology. Use when creating new landing pages, rewriting feature cards, updating marketing copy, launching product pages, or transforming technical features into customer-facing sales language. Triggers on "build landing page", "update feature cards", "rewrite marketing copy", "create product page", "launch page", "GTM", "sales copy", "competitive positioning", or when converting product features into conversion-focused web pages.
Decide whether your agent actually needs persistent memory, feedback loops, or closed-loop learning, then design the smallest thing that pays for itself. Use when the user says "add memory", "give my agent context management", "make my agent learn", "self-improving / closed-loop", "Reflexion / mem0 / Letta / MemGPT", "AriGraph", "agent memory architecture", "long-term memory for chatbot", "why does my agent keep forgetting / making the same mistake", "fine-tune from agent traces", or asks for a memory schema / experience store / reward model. Filters ruthlessly — most teams want a state cache, not memory + learning. Default position is scratchpad-only with a stateless agent shipped first.
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Custom plugins and skills for Claude Code.
| 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 |
| rethink-surveys | Plugin | Survey design grounded in research methods (Jarrett, Dillman, Tourangeau) with design/critique/app-scaffold commands + bundled MCP server | /plugin install rethink-surveys@ccc |
| agentic-toolkit | Reference package | Reusable TypeScript infrastructure for multi-model councils, sub-agent hierarchies, and provenance-tracked tool loops | Copy the source — see README |
| 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 |
| agentic-system-design | Skill | 12-stage Q&A workflow for designing agentic pipelines, councils, and sub-agent hierarchies | /plugin install ccc-skills@ccc |
| self-improving-systems | Skill | Decide whether your agent actually needs memory/feedback/learning — then design the smallest thing that pays for itself | /plugin install ccc-skills@ccc |
| htmldrop | Skill | Publish HTML as shareable links (Surge.sh) with collaborative annotation + AI converge | /plugin install ccc-skills@ccc |
| landing-page-gtm | Skill | High-converting SaaS landing pages with GTM-aware copy and competitive positioning | /plugin install ccc-skills@ccc |
| uat-testing | Skill | End-to-end UAT for web apps via Playwright: test case generation, execution, pass/fail reports | /plugin install ccc-skills@ccc |
# Add this repo as a marketplace
/plugin marketplace add ooiyeefei/ccc
# Install a plugin (e.g. deckling, which has the /deckling command)
/plugin install deckling@ccc
# Install the skills collection (excalidraw, streak, agentic-system-design,
# self-improving-systems, htmldrop, landing-page-gtm, uat-testing)
/plugin install ccc-skills@ccc
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.
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:
Philosophy: "Don't overbuild. Just make it stable, usable, and something people can trust."
See plugins/mvp-launch/README.md for full documentation.
AI-native product management for startups. Process signals, not features.
After installing, just ask Claude Code:
"Analyze my product"
"Research competitors"
"Find feature gaps we should build"
"What should we build next?"
/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
Prioritize with objective scoring: WINNING = Pain × Timing × Execution
This skill handles WHAT to build (product discovery). For HOW to build, use spec-kit:
npx claudepluginhub wenjix/cccAI-native product management for startups. Transform Claude into an expert PM with competitive research, gap analysis using the WINNING filter, PRD generation, and GitHub Issues integration.
Survey design framework grounded in proven research methods (Caroline Jarrett's Surveys That Work, Dillman's Tailored Design, Tourangeau's cognitive model). Captures user intent — what people are actually trying to do, what friction they face, what outcomes they want — without leading questions, satisficing bait, or shallow Likert noise. Includes a 4-part hybrid structure (discovery / diagnostic / intent / segmentation), a question library with behavioral anchors, and three battle-tested templates (event organizers, startup founders, gig-economy workers). Supports text, voice, and AI-interviewer modalities. Bundles the `rethink-survey` MCP server with tools for designing, critiquing, scoring, and clustering survey responses. Use when designing a new survey, critiquing an existing one, or turning survey questions into an app scaffold.
Generate native PPTX files using Anthropic Platform Skills. No ugly python-pptx - uses Anthropic's server-side rendering engine.
Web app MVP launch readiness checker. Analyzes existing codebases against a battle-tested 10-point checklist (Stripe, mobile, onboarding, AI stability, emails, logging, feedback, auth, domain, database). Identifies gaps, confirms understanding with user, and produces prioritized action items. Philosophy: Don't overbuild.
Comprehensive skill pack with 66 specialized skills for full-stack developers: 12 language experts (Python, TypeScript, Go, Rust, C++, Swift, Kotlin, C#, PHP, Java, SQL, JavaScript), 10 backend frameworks, 6 frontend/mobile, plus infrastructure, DevOps, security, and testing. Features progressive disclosure architecture for 50% faster loading.
Tools to maintain and improve CLAUDE.md files - audit quality, capture session learnings, and keep project memory current.
Complete creative writing suite with 10 specialized agents covering the full writing process: research gathering, character development, story architecture, world-building, dialogue coaching, editing/review, outlining, content strategy, believability auditing, and prose style/voice analysis. Includes genre-specific guides, templates, and quality checklists.
Unity Development Toolkit - Expert agents for scripting/refactoring/optimization, script templates, and Agent Skills for Unity C# development
Comprehensive .NET development skills for modern C#, ASP.NET, MAUI, Blazor, Aspire, EF Core, Native AOT, testing, security, performance optimization, CI/CD, and cloud-native applications
Complete collection of battle-tested Claude Code configs from an Anthropic hackathon winner - agents, skills, hooks, and rules evolved over 10+ months of intensive daily use