claude-skills-devcontainer

Creates or updates arc42 architecture documentation for Java projects (Spring Boot / Quarkus). Analyzes pom.xml, source code, specs, and infrastructure to fill arc42 sections automatically. Supports German and English. Use this skill for "arc42 documentation", "architecture documentation", "document the architecture", "create arc42", "update arc42" or when a project needs structured architecture documentation based on the arc42 template.

Infrastructure scaffolding for Java projects – Dockerfiles, docker-compose, Helm Charts, and CI/CD pipelines. Reads existing pom.xml and application.properties to detect framework, services, and health endpoints automatically. Use this skill for "create a Dockerfile", "docker-compose", "Helm chart", "CI/CD pipeline", "infrastructure", "containerize", or "deploy".

Scaffolding for Java projects with Spring Boot or Quarkus, PostgreSQL, RabbitMQ, and LangChain4j AI. Generates pom.xml, BCE package structure, Flyway migrations, architecture tests (Taikai), and application code. Supports AI business applications with LangChain4j (AI Services, Tools/Function Calling, RAG, Guardrails). Use this skill for new Java applications, new entities, architecture tests, AI services, or AI integrations – also for "create a new project", "scaffold", "new module", "new entity", "AI Service", "Chatbot", "RAG", "LangChain4j". For Dockerfiles, docker-compose, and infrastructure, use the infrastructure skill.

Creates technical blog posts in the style of the-main-thread.com with structured interviews and audience adaptation (Developer, Business Analysts, Project Managers). Use this skill whenever a blog post, article, tutorial, guide, experience report, or technical contribution needs to be created – also for informal requests like "write something about X", "I want to blog about X", or "make an article out of this". Also use when an existing draft should be turned into blog post format.

Phase-based coworker for end-to-end project setup. Guides through specification, API design, and code generation with review after each phase. Use this skill when a new project needs to be set up from scratch or when the developer wants to be guided through the complete workflow. Also for "start a new project", "coworker", "guide me through the setup", "I need a new project", or "set up a project end-to-end".

Creates or updates project documentation as a Markdown page in docs/. Automatically analyzes pom.xml, properties, docker-compose, and source code – only asks what cannot be derived from the code. Use this skill for "document the project", "write docs", "update the docs", "create a README" or when a new project needs technical documentation.

Creates modern web UIs with Tailwind CSS. Three modes – Simple HTML pages (no JS), Dashboards/Admin Panels with TailAdmin (Alpine.js + ApexCharts), and Websites/Landing Pages with Tailwind CSS CDN. Use this skill for "create a dashboard", "landing page", "admin UI", "frontend", "website", "build a UI", "portfolio page", "create an HTML page", "simple website", "static page", "build me a form" or when a responsive HTML page with Tailwind CSS is needed. Do not use for complex SPAs with React/Vue/Angular.

Creates professional infographics as PNG via the Hugging Face Inference API (FLUX.1-schnell). Supports technical dashboards, architecture overviews, process flows, comparisons, timelines, and creative posters. Use this skill for infographics, visualizations, illustrated statistics, or roadmaps – also for "visualize this", "make this clear", "show this as an image", "create a diagram", or "create an infographic".

Creates, extends, and implements OpenAPI 3.x specifications. Three modes – create spec (from scratch), extend spec (add to existing spec), and generate code (Java classes in BCE pattern). Use this skill for "create an API spec", "define the API", "extend the API", "generate code from the OpenAPI spec", "new OpenAPI spec" or when a REST API needs to be designed.

Reviews changed or existing code against project conventions, architecture rules (BCE), and best practices. Automatically captures staged/unstaged changes or branch diffs. Use this skill for "review code", "check the code", "code review", "look at the code", "quality check" or when code should be reviewed before a commit or merge.

Spec Driven Development – gathers business features through a structured interview sequence (context, behavior, technical hints, quality) and creates a specification file in specs/. Use this skill for "specify a feature", "create a spec", "describe the feature", "what should the system do?" or when requirements should be captured in a structured way before code is written.