Development skills

Browse reusable Agent Skills, each with a clear purpose and practical guidance.

java-project-setup

Guides expert-level Java project initialization: Maven vs Gradle decision tree, multi-module structure, Java version management, toolchain configuration, and build optimization. Use when the user asks about Java project setup, Maven, Gradle, build.gradle.kts, multi-module, Java version management, toolchain. Do NOT use when the user asks about Java modern idioms (use `java-modern-idioms`), Java testing (use `java-testing-patterns`), Java Spring (use `java-spring-patterns`).

543 repo starsObserved in 2 repos
Development
GitHub

java-spring-patterns

Guides expert-level Spring Boot 3.x development: dependency injection patterns, auto-configuration, actuator, configuration properties, and idiomatic Spring architecture. Use when the user asks about Spring Boot, dependency injection, Spring configuration, actuator, Spring Boot 3.x, Spring patterns. Do NOT use when the user asks about Java project setup (use `java-project-setup`), Java testing (use `java-testing-patterns`), Java concurrency (use `java-concurrency-patterns`).

543 repo starsObserved in 2 repos
Development
GitHub

javascript-idioms

Teaches expert-level modern JavaScript idiomatic patterns: optional chaining, nullish coalescing, destructuring, iterators and generators, Proxy and Reflect, WeakRef, and structured clone. Focuses on patterns that leverage ES2022+ features. Use when the user asks about modern JavaScript patterns, optional chaining, nullish coalescing, destructuring, iterators, generators, Proxy, or idiomatic JS code. Do NOT use when the user asks about TypeScript types (use `typescript-type-patterns`), Node.js setup (use `nodejs-project-setup`), or testing (use `javascript-testing-patterns`).

543 repo starsObserved in 2 repos
Development
GitHub

jetpack-compose-dev

Expert Android Jetpack Compose development covering declarative UI, state hoisting, Material 3 theming, type-safe navigation, lazy layouts, custom animations, ViewModel integration, side effects, accessibility, and production architecture patterns for modern Android apps. Use when the user asks about jetpack compose dev, jetpack compose dev best practices, or needs guidance on jetpack compose dev implementation. Do NOT use when the user needs a different specialized skill or is asking about an unrelated technology domain.

543 repo starsObserved in 2 repos
Development
GitHub

knowledge-graph-builder

Knowledge graph engineering covering ontology design, graph database selection (Neo4j, Amazon Neptune, ArangoDB), entity and relation extraction from text, graph-based RAG (GraphRAG), knowledge graph embeddings, graph query optimization, and integration patterns with LLM systems. Use when the user asks about knowledge graph builder, knowledge graph builder best practices, or needs guidance on knowledge graph builder implementation. Do NOT use when the user needs a different specialized skill or is asking about an unrelated technology domain.

543 repo starsObserved in 2 repos
Development
GitHub

kotlin-android-patterns

Guides expert-level kotlin android patterns implementation: kotlin and mobile decision frameworks, production-ready patterns, and concrete templates for kotlin android patterns workflows. Use when the user asks about kotlin android patterns, kotlin android patterns configuration, or kotlin best practices for kotlin projects. Do NOT use when the user needs a different languages runtimes capability -- check sibling skills in the languages runtimes subcategory.

543 repo starsObserved in 2 repos
Development
GitHub

kotlin-coroutines-patterns

Guides expert-level kotlin coroutines patterns implementation: kotlin and mobile decision frameworks, production-ready patterns, and concrete templates for kotlin coroutines patterns workflows. Use when the user asks about kotlin coroutines patterns, kotlin coroutines patterns configuration, or kotlin best practices for kotlin projects. Do NOT use when the user needs a different languages runtimes capability -- check sibling skills in the languages runtimes subcategory.

543 repo starsObserved in 2 repos
Development
GitHub

kotlin-project-setup

Guides expert-level kotlin project setup implementation: kotlin and best-practices decision frameworks, production-ready patterns, and concrete templates for kotlin project setup workflows. Use when the user asks about kotlin project setup, kotlin project setup configuration, or kotlin best practices for kotlin projects. Do NOT use when the user needs a different languages runtimes capability -- check sibling skills in the languages runtimes subcategory.

543 repo starsObserved in 2 repos
Development
GitHub

legacy-code-archaeologist

Expertise in understanding unfamiliar and legacy codebases through reverse engineering, documentation recovery, behavior characterization, dependency mapping, safe refactoring techniques, and systematic knowledge extraction from undocumented systems. Use when the user asks about legacy code archaeologist, legacy code archaeologist best practices, or needs guidance on legacy code archaeologist implementation. Do NOT use when the user needs a different specialized skill or is asking about an unrelated technology domain.

543 repo starsObserved in 2 repos
Development
GitHub

micro-frontend-architect

Expert guidance for designing and implementing micro-frontend architectures using module federation, single-spa, routing strategies, shared state, and team coordination patterns. Use when the user asks about micro frontend architect, micro frontend architect best practices, or needs guidance on micro frontend architect implementation. Do NOT use when the user needs a different specialized skill or is asking about an unrelated technology domain.

543 repo starsObserved in 2 repos
Development
GitHub