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Expert guidance on modern Java 17+ development, including Spring Boot, virtual threads, sealed types, and high-performance concurrency patterns.
This skill provides the agent with a comprehensive knowledge base of modern Java idioms, project structures, and performance optimization techniques. It ensures that Java code generated or reviewed adheres to contemporary standards and industry best practices.
Activate this skill when working on Java projects, particularly those using Spring Boot, Jakarta EE, or high-performance concurrent applications. It is ideal for architecting multi-module projects or implementing strict type-safe patterns using sealed classes and records.
Designed for professional AI coding tools including Claude Code, Cursor, Windsurf, Copilot, and Codex CLI.
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Ubiquitous Language Glossary
Extract a DDD-style ubiquitous language glossary from conversation: identify domain terms, flag ambiguities, propose canonical terms, and write the result to UB
Memory Search
Search past coding sessions and observations using natural-language queries to retrieve decisions, notes, and context.
Prompt Caching Patterns
Guidelines and patterns for implementing prompt caching with Anthropic APIs to reduce input-token costs and latency, including TTLs, breakpoints, and hit-rate m
Documentation Generator
Generate and update README, API docs, architecture notes, changelogs and knowledge-base entries from a codebase, with templates and review guidance.
Design Engineering
Guidelines and patterns for UI animation, micro-interactions, and component polish to build performant, accessible, and delightful interfaces.
Kotlin Rules
Project-specific Kotlin coding standards covering naming, null-safety, coroutines, testing, frameworks (Ktor, Spring), and security best practices.
Brand Voice
Enforces a concise, technical, and consistent voice for documentation and user-facing text with configurable concise/strict output modes.
FastAPI Project Templates
Creates production-ready FastAPI project scaffolds with async patterns, DI, middleware, and testing best practices for high-performance APIs.
BK-CI Design Patterns Guide
Practical guide to design patterns used in the BK-CI project (Kotlin/Spring). Covers factory, strategy, singleton, decorator, observer, template method, chain-o
SSE Stream Resilience
Provide robust server-sent-events (SSE) stream management with Redis-backed registry, heartbeat monitoring, completion persistence, and background guardian clea
Payment Gateway Integration
Guides and code for integrating major payment providers (Stripe, PayPal, Square) with backend systems: payment intents, subscriptions, webhook handling, and PCI
NUnit 3 Testing
Generate NUnit 3 unit tests and test patterns for C# projects (Assert.That constraint model, parameterized tests, lifecycle hooks, and Moq examples).
Cellar
CLI to inspect public APIs of JVM artifacts (Scala/Java): signatures, members, docs and source code from terminal or project classpath.
Swift Testing Reference
Reference skill for Apple's modern Swift Testing framework: defines @Test/@Suite, expectations (#expect/#require), traits, and migration patterns from XCTest.
Common API Design Standards
Opinionated REST API design guidelines: HTTP semantics, status codes, URL design, versioning, pagination, and OpenAPI contract best-practices.