Implement business logic with ActiveInteraction and AASM state machines. Routes to specialized skills for typed operations and state management.

Complete Business Model Canvas design with all 9 blocks analyzed. Transforms validated ideas into viable business models with revenue clarity and operational strategy.

Business strategy expert - defines users, value propositions, use cases, and business requirements. Connects technical development with market realities and ROI. Includes LATAM market (Chile) specialization.

Expert C4 Code-level documentation specialist. Analyzes code

Expert C4 Component-level documentation specialist. Synthesizes C4

Expert C4 Container-level documentation specialist. Synthesizes

ALWAYS use this skill proactively for Consumer Affairs Django repositories (located in ../ca/ directory) when ANY of these occur - (1) User mentions coverage, codecov, test coverage, partial coverage, branch coverage, or uncovered lines/code (2) User asks to write tests, add tests, run tests, or fix test failures (3) User asks to implement features, fix bugs, or modify code in CA repos and tests are needed (4) User provides a file path containing 'test' or 'tests' in CA repos (5) After writing new code in CA repos that needs test coverage. This skill handles Django test execution using the 'ca magictest' command and ensures 100% code coverage for CI requirements.

Implement production-grade caching with cache keys/TTLs/consistency classes per query, SWR (stale-while-revalidate), explicit invalidation, HTTP cache headers, and comprehensive testing for stale reads and cache warmup. Use when adding caching to queries, implementing cache invalidation, configuring HTTP caching, or ensuring cache consistency and performance.

Enforces project caching conventions when implementing cache layers using React cache(), Next.js unstable_cache, Upstash Redis, and Cloudinary. This skill ensures consistent patterns for cache keys, tags, TTL configuration, cache invalidation, and domain-specific CacheService helpers.

Claude Agentic Creator OS - Native Claude Code implementation

Expert CAD Engineering Specialist with comprehensive knowledge of CAD

Scans Cairo/StarkNet smart contracts for 6 critical vulnerabilities including felt252 arithmetic overflow, L1-L2 messaging issues, address conversion problems, and signature replay. Use when auditing StarkNet projects.

Measure test coverage and identify untested code. Use when assessing test completeness.

Use to enforce cadence rules, timezone coverage, and operational controls

This skill should be used when fixing Vue.js calendar task scheduling issues, specifically when tasks with due dates incorrectly appear in calendar grid instead of staying in calendar inbox. The skill provides comprehensive research-backed solutions for separating task management from calendar scheduling with mandatory Playwright testing.

Implement canary deployment strategies to gradually roll out new versions to subset of users with automatic rollback based on metrics.

Guidance for implementing asyncio task cancellation with proper cleanup, especially for handling keyboard interrupts (Ctrl+C). This skill should be used when tasks involve asyncio cancellation, signal handling, or graceful shutdown of concurrent Python tasks.

Canonical specification format reference. Use when understanding the canonical spec schema, field requirements, provider-agnostic specification structure, or validating specifications against the schema.

Manages assignment submissions on Canvas LMS. Identifies missing submissions from grade records, prepares files with proper naming conventions, and submits assignments. Handles course identification, assignment listing, submission status checking, file preparation, and automated submission.

Generate learning science-backed feedback templates for Canvas assignments. Use when educators need feedback templates for grading, want to create rubric comments, need encouraging feedback language aligned with Pillar 3 principles (targeted, encouraging, immediate), or want to set up SpeedGrader comment libraries. Works with canvas-mcp for bulk grading.

Visual regression for canvas-rendered matrix progressions. Tests filmstrip strips that show how 2D data evolves visually over time. Auto-apply when editing *Progressions.ts strip definitions or stories with filmstrip components.

Senior CAPA Officer specialist for managing Corrective and Preventive Actions within Quality Management Systems. Provides CAPA process management, root cause analysis, effectiveness verification, and continuous improvement coordination. Use for CAPA investigations, corrective action planning, preventive action implementation, and CAPA system optimization.

Identify capability gaps and propose new skills with prioritization. Use when analyzing missing capabilities, planning skill development, performing ontology expansion, or assessing coverage.

Check if a specific action is possible and what might be blocking it. Use when asking if you can do something, checking permissions, verifying a capability exists, or troubleshooting why something isn't working. Trigger words: can I, capability, able to, permission, possible, how do I.

Complete CI/CD guide for Capacitor apps covering GitHub Actions, GitLab CI, build automation, app signing, and deployment pipelines. Use this skill when users need to automate their build and release process.

Model Context Protocol (MCP) tools for Capacitor mobile development. Covers device management, app deployment, log streaming, and automated testing via MCP. Use this skill when users want to automate mobile development tasks or integrate AI agents with mobile tooling.

Complete testing guide for Capacitor apps covering unit tests, integration tests, E2E tests, and native testing. Includes Jest, Vitest, Playwright, Appium, and native testing frameworks. Use this skill when users need to test their mobile apps.

Comprehensive cardiology editorial writing system for thought leadership newsletters. Use when the user wants to: (1) Identify and score recent landmark trials from top cardiology journals (NEJM, JAMA, Lancet, JACC, EHJ, etc.), (2) Write evidence-based editorials in Eric Topol's style from Ground Truth, (3) Create 500-word commentaries on clinical trials with PubMed citations, (4) Analyze trial importance using hybrid rules + LLM scoring, (5) Write editorials from full papers OR abstract-only scenarios, (6) Build thought leadership content for cardiologists, or (7) Synthesize recent cardiology advances for peers and referring physicians.

Comprehensive coding standards and architectural patterns for the CareBridge eldercare management application. Includes critical patterns for case context management, Stripe integration, Next.js 15 requirements, component creation rules, and database operations. This skill should be used whenever working on the CareBridge codebase to ensure consistency and prevent common mistakes.

Career Advisor agent for PhD application planning and career management. Helps with university research, application tracking, professor matching, and career documentation.

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Master Cargo Make build orchestration. Poka-yoke error-proofing, SLO enforcement (check <5s, test <30s, lint <60s), andon signals. Essential: always cargo make, never direct cargo.

Use when users need help generating safe, tested POSIX shell commands from natural language descriptions. Guides users through command generation, safety validation, and execution workflows using Caro best practices

Draft case justification sections for interview-based sociology articles. Guides cluster selection, component coverage, and calibration based on analysis of 32 Social Problems/Social Forces articles.

Writes compelling customer success stories with measurable results. Use when the user asks about case studies, success stories, customer stories, client wins, testimonials, or proof of results.

cash-flow-analysis

Enable AI agents to introspect and control Castella UIs via MCP. Create MCP servers, expose UI resources, handle MCP tools, and use semantic IDs.

Defines the standard 8-category taxonomy for classifying project files: Config, Tests, Docs, Scripts, Source Code, Data, AI Tooling, and Other. REFERENCE THIS SKILL whenever categorizing files, auditing project structure, or answering 'what types of files are here.' Apply these categories and patterns whether using the bundled script or manual analysis.

Expert Electrical Engineer specializing in cathodic protection (CP) systems

Query the China Biographical Database (CBDB) API to retrieve comprehensive biographical data about historical Chinese figures. Use this skill when searching for information about Chinese historical figures, scholars, officials, or literary figures from the 7th century BCE through the 19th century CE. Applicable for queries about biographical details, social relationships, official positions, or when users mention specific Chinese names or CBDB person IDs.

Comprehensive Chrome DevTools automation for performance testing, Core Web Vitals measurement (INP, LCP, CLS), network monitoring, accessibility validation, responsive testing, and browser automation. Uses Chrome DevTools Protocol via MCP to provide professional-grade web application testing, debugging, and analysis capabilities including performance tracing, HAR export, device emulation, and multi-page workflows.

Guide systematic debugging using scientific method: STABILIZE -> HYPOTHESIZE -> EXPERIMENT -> FIX -> TEST -> SEARCH. Two modes: CHECKER audits debugging approach (outputs status table with violations/warnings), APPLIER guides when stuck (outputs stabilization strategy, hypothesis formation, fix verification). Use when encountering ANY bug, error, test failure, crash, wrong output, flaky behavior, race condition, regression, timeout, hang, or code behavior differing from intent. Triggers on: debug, fix, broken, failing, investigate, figure out why, not working, it doesn't work, something's wrong.

This skill should be used when starting any feature or bug fix, exploring unfamiliar code, making commits or PRs, or when unsure which agent or approach to use. Covers agent routing, git discipline, testing workflow, and proactive quality practices.

This skill should be used when users want to create, configure, or debug Claude Code hooks. Hooks are shell commands that execute at various points in Claude Code's lifecycle (PreToolUse, PostToolUse, Stop, SessionStart, etc.). Use this skill when users ask to create custom automation, file protection, code formatting hooks, notifications, or any lifecycle-based triggers for Claude Code.

Audit integration strategy and daily build processes (CHECKER) or select optimal integration approach and configure CI/CD (APPLIER). Use when integrating components, planning integration order, setting up build processes, or diagnosing integration failures. Triggers on: integration hell, late-stage defects, unclear integration order, no daily build, broken builds, Big Bang integration, smoke test stale. Produce integration strategy recommendations, build process configuration, 13-item checklist assessment with severity ratings.

Extend marketplace plugins with project-specific context using `.local.md` files. These files bridge general plugin skills to a specific codebase.

Automatically discover testing skills when working with testing. Activates for testing development tasks.

Refactor codebases using Design by Typed Holes methodology - iterative, test-driven refactoring with formal hole resolution, constraint propagation, and continuous validation. Use when refactoring existing code, optimizing architecture, or consolidating technical debt through systematic hole-driven development.

Complete guide for separating meta-configurations (Claude Code tool configuration) from domain configurations (project implementation). Learn how to avoid conflicts when working with multiple projects, especially those using agent SDKs/ADKs like Google ADK, LangChain, or Anthropic SDK. Covers namespace isolation, prefixing conventions, CLAUDE.md hierarchy, scope declaration, and conflict detection strategies.

Project Guidelines Skill (Example)