Jens Fischer

Claude Code


Claude Control

Claude Control is my open source plugin marketplace for Claude Code.

Plugins

Design

SkillDescription
ui-mobileMobile UI patterns - React Native, iOS/Android, touch targets
ui-webWeb UI - glassmorphism, Tailwind, dark mode, accessibility

Development

SkillDescription
accessibilityRun comprehensive accessibility audits using axe-core and eslint-plugin-jsx-a11y
agentic-developmentBuild AI agents with Pydantic AI (Python) and Claude SDK (Node.js)
architecture-reviewSystematic architecture review methodology and pattern analysis
audit-websiteAudit websites for SEO, performance, security, and 15 other categories with 230+ rules
aws-cdkAWS Cloud Development Kit (CDK) for building cloud infrastructure with TypeScript/Python
baseUniversal coding patterns, constraints, TDD workflow, atomic todos
better-authConfigure Better Auth server and client, set up database adapters, manage sessions
chakra-uiAccessible components, theming, and responsive design with @chakra-ui/react
cloudflare-workersReview and author Cloudflare Workers code against production best practices
code-deduplicationPrevent semantic code duplication with capability index and check-before-write
credentialsCentralized API key management from Access.txt
d3jsInteractive data visualizations using d3.js - charts, graphs, network diagrams
database-schemaSchema awareness - read before coding, type generation, prevent column errors
dockerfileCreate, generate, and write Dockerfiles and multi-stage Docker images
git-worktreesCreate isolated git worktrees with smart directory selection and safety verification
i18nGuides better-i18n integration decisions - SDK selection, CDN vs GitHub workflow
llm-patternsAI-first application patterns, LLM testing, prompt management
mcp-builderGuide for creating high-quality MCP servers for LLM-service interaction
nestjsProgressive Node.js framework with modules, guards, interceptors
nextjsNext.js best practices - file conventions, RSC boundaries, data patterns, metadata
nodejs-backendNode.js backend patterns with Express/Fastify, repositories
nx-monorepoWorkspace organization, library creation, build optimization with Nx
postgresExecute read-only SQL queries against multiple PostgreSQL databases
prismaType-safe ORM for database schema, migrations, and data access
project-toolinggh, vercel, supabase, render CLI and deployment platform setup
pythonPython development with ruff, mypy, pytest - TDD and type safety
react-hook-formPerformant forms with validation, field arrays, and Zod integration
react-nativeReact Native mobile patterns, platform-specific code
react-webReact web development with hooks, React Query, Zustand
reddit-apiReddit API with PRAW (Python) and Snoowrap (Node.js)
remotionBest practices for Remotion - video creation in React
sanitySanity development best practices for schema design, GROQ queries, TypeGen
securityOWASP security patterns, secrets management, security testing
sentryError tracking, performance monitoring, and error boundaries
shopify-appsShopify app development - Remix, Admin API, checkout extensions
stripeStripe Checkout, subscriptions, webhooks, customer portal
subagent-developmentExecute implementation plans with independent tasks in the current session
supabaseCore Supabase CLI, migrations, RLS, Edge Functions
supabase-nextjsNext.js with Supabase and Drizzle ORM
supabase-nodeExpress/Hono with Supabase and Drizzle ORM
supabase-pythonFastAPI with Supabase and SQLAlchemy/SQLModel
tanstack-queryServer state management, caching, mutations with @tanstack/react-query
tanstack-tableData tables with sorting, filtering, pagination, virtualization
typescriptTypeScript strict mode with eslint and jest
typesenseTypo-tolerant search engine, indexing, faceted navigation
web-asset-generatorGenerate web assets including favicons, app icons (PWA), and social media meta images
zodSchema validation, type inference, data transformation with Zod

Ethos

SkillDescription
principlesDefault personal principles template - replace with your own via ethos.local.md

Guardrails

SkillDescription
guardrailsSafety guardrails overview - explains available guard modes and how to activate them

Learning

SkillDescription
ai-modelsLatest AI models reference - Claude, OpenAI, Gemini, Eleven Labs, Replicate
brainstormingExplores user intent, requirements and design before any creative work
collision-zone-thinkingForce unrelated concepts together to discover emergent properties
inversion-exerciseFlip core assumptions to reveal hidden constraints and alternative approaches
meta-pattern-recognitionSpot patterns appearing in 3+ domains to find universal principles
scale-gameTest at extremes (1000x bigger/smaller) to expose fundamental truths
ship-learn-nextTransform learning content into actionable implementation plans
simplification-cascadesFind one insight that eliminates multiple components
think-deeplyStructured analysis to explore multiple perspectives before responding
tracing-knowledge-lineagesUnderstand how ideas evolved over time to find old solutions for new problems
user-journeysUser experience flows - journey mapping, UX validation, error recovery

Marketing

SkillDescription
ab-test-setupPlan, design, and implement A/B tests and growth experimentation programs
ad-creativeGenerate, iterate, and scale ad creative - headlines, descriptions, full ad variations
aeo-optimizationAI Engine Optimization - semantic triples, page templates, content clusters for AI citations
cold-emailWrite B2B cold emails and follow-up sequences that get replies
copy-editingEdit, review, and improve existing marketing copy or refresh outdated content
copy-writingWrite, rewrite, or improve marketing copy for any page type
email-sequenceCreate and optimize email sequences, drip campaigns, and lifecycle email flows
launch-strategyPlan product launches, feature announcements, and go-to-market strategies
lead-magnetsCreate, plan, and optimize lead magnets for email capture and lead generation
marketing-psychologyApply psychological principles, mental models, and behavioral science to marketing
page-croOptimize and increase conversions on marketing pages
posthog-analyticsPostHog analytics, event tracking, feature flags, dashboards
pricing-strategyPricing decisions, packaging, monetization strategy, and plan structuring
programmatic-seoCreate SEO-driven pages at scale using templates and data
reddit-adsReddit Ads API - campaigns, targeting, conversions, agentic optimization
referral-programCreate, optimize, and analyze referral programs and word-of-mouth strategies
sales-enablementCreate sales collateral - pitch decks, one-pagers, objection handling docs
site-architectureTechnical SEO - robots.txt, sitemap, meta tags, Core Web Vitals
social-contentCreate, schedule, and optimize social media content for all platforms
web-contentSEO and AI discovery (GEO) - schema, ChatGPT/Perplexity optimization

Media

SkillDescription
image-enhancerImprove image quality, especially screenshots - resolution, sharpness, clarity
imagenGenerate images using Google Gemini's image generation capabilities
video-downloaderDownload YouTube videos with customizable quality and format options

Meta-Tooling

SkillDescription
skill-creatorCreate new skills, modify existing skills, and measure skill performance with evals

Testing

SkillDescription
llm-testingComprehensive testing prompts and wordlists for evaluating LLM security and robustness
playwright-testingE2E testing with Playwright - Page Objects, cross-browser, CI/CD
ui-testingVisual testing - catch invisible buttons, broken layouts, contrast

Workflows

SkillDescription
changelog-generatorAutomatically create user-facing changelogs from git commits
code-reviewMandatory code reviews via /code-review before commits and deploys
commit-hygieneAtomic commits, PR size limits, commit thresholds, stacked PRs
dispatching-parallel-agentsHandle 2+ independent tasks without shared state or sequential dependencies
finishing-a-development-branchGuides completion of development work - merge, PR, or cleanup options
iterative-developmentSelf-referential TDD iteration until tests pass
meeting-insightsAnalyze meeting transcripts for behavioral patterns and communication insights
preserving-productive-tensionsRecognize when disagreements reveal valuable context and multiple valid approaches
product-managerDiagnose SaaS metrics, critique PRDs, plan roadmaps, run discovery
session-managementContext preservation, tiered summarization, resumability
team-coordinationMulti-person projects - shared state, todo claiming, handoffs

Writing

SkillDescription
article-extractorExtract clean article content from URLs, removing ads and clutter
autoresearchAutonomous AI research projects using a two-loop architecture
avoid-ai-writingReview and rewrite content to eliminate AI writing patterns
content-research-writerConduct research, add citations, and provide feedback for quality content
deep-researchAcademic research using a 13-agent pipeline for any topic
docxCreate and modify Word documents with professional formatting
internal-commsDraft status reports, leadership updates, newsletters, FAQs, incident reports
pdfPDF reading, extraction, combining, splitting, watermarking, OCR, encryption
pptxCreate and edit PowerPoint presentations
writing-plansDevelop multi-step task plans from specifications before implementation
writing-skillsCreate, edit, and test new writing skills
xlsxWork with spreadsheets in multiple formats (.xlsx, .xlsm, .csv, .tsv)