All Skills

Use when you need to write or improve integration tests for Quarkus — including @QuarkusTest, Dev Services for automatic container provisioning, Testcontainers via QuarkusTestResourceLifecycleManager, WireMock for external HTTP stubs, @QuarkusIntegrationTest for black-box testing against packaged artifacts, REST Assured, data isolation strategies (@TestTransaction vs @BeforeEach cleanup), and Maven Surefire/Failsafe three-tier split (*Test, *IT, *AT). This should trigger for requests such as Add or improve integration tests in a Quarkus project; Configure Testcontainers or Dev Services for Quarkus tests; Add WireMock stubs for external HTTP dependencies in Quarkus integration tests; Set up @QuarkusIntegrationTest for packaged artifact or native binary testing; Fix test data isolation or configure Maven Surefire/Failsafe split. Part of Plinth Toolkit

Use when reviewing whether an OpenSpec change's execution goal, acceptance criteria, and implementation or verification tasks are aligned. This should trigger for requests such as Review this OpenSpec change with ATDD; Check acceptance criteria against tasks; Find acceptance criteria without task coverage; Detect tasks that diverge from the execution goal; Explain what is missing, vague, ambiguous, partial, absent, or divergent in this OpenSpec change. Part of Plinth Toolkit

Use when you need to design, review, or improve REST APIs with Micronaut — including @Controller routes, HTTP status codes, DTOs, Bean Validation, exception handlers, pagination, idempotency, ETag/If-Match, caching headers, versioning, contract-first OpenAPI (OpenAPI Generator), optional runtime OpenAPI via micronaut-openapi, and security annotations. This should trigger for requests such as Review or improve Micronaut @Controller REST APIs; Add validation, error handling, or align controllers with the OpenAPI contract on Micronaut HTTP layer; Design Micronaut controllers and DTO validation; Add Micronaut exception handlers and Problem Details responses; Improve pagination filtering or OpenAPI alignment in Micronaut APIs. Part of Plinth Toolkit

Use when you need to generate Java project diagrams — including UML sequence diagrams, UML class diagrams, C4 model diagrams, UML state machine diagrams, UML Deployment Diagrams, ER (Entity Relationship) diagrams, and bounded-context diagrams — through a modular, step-based interactive process that adapts to your specific visualization needs. This should trigger for requests such as Generate UML diagram; Create sequence diagram; Create class diagram; Create state machine diagram; Create deployment diagram; Create C4 diagram; Create bounded-context diagram; Create context-map diagram. Part of Plinth Toolkit

Use when reviewing, improving, or refactoring Java object-oriented design, including applying SOLID, DRY, or YAGNI; improving classes and interfaces; correcting encapsulation, inheritance, or polymorphism; resolving God Class, Feature Envy, or Data Clumps; and improving object creation, methods, or exception contracts. Triggers include review Java OOD, refactor Java OOD, improve Java OOD, fix OOP misuse, and identify Java code smells. Part of Plinth Toolkit

Monitors and tunes PostgreSQL vacuum operations including autovacuum configuration, vacuum progress tracking, wraparound prevention, and per-table vacuum strategy. Provides tuning recommendations for high-churn OLTP and large analytical tables.

Guides SQL query optimization through execution plan analysis and common rewrite patterns. Covers subquery-to-JOIN conversion, CTE materialization control, OR-to-UNION, NOT IN-to-NOT EXISTS, pagination optimization, and SELECT * elimination. Uses analyze_query with format and settings parameters for deep plan analysis.

Comprehensive NestJS framework guide with Drizzle ORM integration. Use when building NestJS applications, setting up APIs, implementing authentication, working with databases, or integrating Drizzle ORM. Covers controllers, providers, modules, middleware, guards, interceptors, testing, microservices, GraphQL, and database patterns.

Expert NestJS code reviewer specializing in TypeScript best practices, NestJS patterns, and architectural issues. Reviews code for quality, maintainability, and adherence to NestJS conventions. Use PROACTIVELY after code changes or when implementing new features.

Expert GitHub Actions engineer specializing in CI/CD pipeline creation for build, test, and deployment workflows. Masters reusable workflows, composite actions, matrix strategies, and multi-environment deployments to AWS, GCP, Azure, and other platforms. Use PROACTIVELY for GitHub Actions workflow creation, pipeline optimization, or deployment automation.

Expert React frontend developer specializing in React 19, Vite, TypeScript, Tailwind CSS, and shadcn/ui. MUST BE USED for React frontend development tasks, component design, state management, UI implementation, and best practices. Use PROACTIVELY for building modern, responsive, and accessible React applications with latest React 19 features.

Expert NestJS backend developer specializing in feature implementation, architecture, and best practices. Use PROACTIVELY for NestJS development tasks, REST API implementation, and backend architecture decisions.

Expert Java and Spring Boot code refactoring specialist. Improves code quality, maintainability, and readability while preserving functionality. Applies clean code principles, SOLID patterns, and Spring Boot best practices. Use PROACTIVELY after implementing features or when code quality improvements are needed.

Expert in unit testing with Spring Test, JUnit 5, and Mockito for Spring Boot applications. Specializes in comprehensive test strategies, test architecture, and testing best practices. Use PROACTIVELY for writing unit tests, improving test coverage, or reviewing testing strategies.

Expert AWS DevOps engineer specializing in CloudFormation templates, Infrastructure as Code (IaC), and AWS deployment automation. Masters nested stacks, cross-stack references, custom resources, and CI/CD pipeline integration. Use PROACTIVELY for CloudFormation template creation, IaC best practices, or AWS infrastructure automation.

Expert Python code reviewer specializing in code quality, security, performance, and Pythonic best practices. Reviews Python codebases for bugs, logic errors, security vulnerabilities, and quality issues using confidence-based filtering. Use PROACTIVELY for Python code reviews and pull request assessments.

Expert Spring Boot backend developer specializing in feature implementation, architecture, and best practices. Use PROACTIVELY for Spring Boot development tasks, REST API implementation, and backend architecture decisions.

Expert AWS architecture and CloudFormation reviewer specializing in Well-Architected Framework compliance, security best practices, cost optimization, and IaC quality. Reviews AWS architectures and CloudFormation templates for scalability, reliability, and operational excellence. Use PROACTIVELY for AWS architecture reviews, CloudFormation template validation, or Well-Architected assessments.

Expert React software architect specializing in frontend architecture, component design patterns, state management strategies, and performance optimization. Reviews React codebases for architectural integrity, proper component composition, and best practices across React 19, Next.js, Remix, and modern frontend frameworks. Use PROACTIVELY for React architectural decisions, frontend design patterns, and complex UI architecture reviews.

Expert PHP software architect specializing in Clean Architecture, Domain-Driven Design (DDD), and modern PHP patterns. Reviews PHP codebases (Laravel, Symfony) for architectural integrity, proper module organization, and SOLID principles. Use PROACTIVELY for PHP architectural decisions, DDD modeling, and Clean Architecture reviews.

Expert Expo and React Native mobile developer specializing in cross-platform mobile app development with Expo SDK 54, React Native 0.81, React 19.1, TypeScript, and modern mobile UI patterns. MUST BE USED for Expo/React Native development tasks, mobile UI implementation, navigation, state management, and native module integration. Use PROACTIVELY for building production-ready iOS and Android applications.

Expert Java documentation specialist creating comprehensive technical documentation from Spring Boot codebases. Analyzes architecture, design patterns, and implementation details to produce complete project documentation including API docs, architecture guides, and technical manuals. Use PROACTIVELY for system documentation, architecture guides, API documentation, or technical deep-dives.

Expert TypeScript software architect specializing in Clean Architecture, Domain-Driven Design (DDD), Node.js patterns, and modern TypeScript frameworks. Reviews TypeScript codebases for architectural integrity, proper separation of concerns, and best practices across Express, Fastify, NestJS, and other frameworks. Use PROACTIVELY for TypeScript architectural decisions, DDD modeling, and modern JavaScript/TypeScript patterns.

Show that work you implemented actually works, or demo it, from tests that ran in CI via Currents — a trace API link whose trace summary, filmstrip and accessibility snapshots read inside a comment, plus screenshots, attachments and videos. Use when asked to "collect evidence", "prove it works", "show me it works", "demo the feature", "capture a before/after", or to attach proof of a change to a PR, issue, ticket, or status update. Evidence comes from CI runs retrieved through the Currents MCP tools or REST API, not from a local run.