
Generic, composable Java 25 code conventions — modern syntax, code style, naming, visibility, structure, methods, streams, exceptions, and documentation rules that apply across all Java contexts (single-file scripts, CLI apps, MicroProfile/Jakarta EE servers, libraries). Technology-neutral within the Java world; meant to be composed with context-specific skills (e.g. `java-cli-script`, `java-cli-app`, `microprofile-server`, `bce`). Use when writing, generating, or reviewing Java code anywhere the composed skill does not already specify style. Triggers on "Java conventions", "Java style", "Java code style", "modern Java", "Java 25", "idiomatic Java", or any request to write or review Java code where context-specific skills do not already cover style.
Create and maintain multi-file Java 25 CLI applications packaged as executable JARs with zb (Zero Dependencies Builder). Use when asked to create a Java CLI application, a CLI project with multiple source files, or an executable JAR. Triggers on "Java CLI app", "CLI application", "multi-file Java", "executable JAR", "zb build", or requests for Java programs that need multiple source files or JAR packaging. Not for single-file scripts — use java-cli-script for those.
Architecture and coding rules for long-running Java MicroProfile / Jakarta EE server applications — BCE layering, business components (BC), JAX-RS resources, CDI, JSON-P, testing (unit/integration/system), and Maven project structure. Use when creating, generating, scaffolding, writing, or reviewing code, resources, entities, boundaries, or business components in MicroProfile server projects. Not for serverless deployments.
Create zero-dependency, single-file executable Java scripts for system-wide use via PATH. Use when asked to create a single-file Java shell script, system utility, PATH-installed Java tool, or shebang-launched Java program without the .java extension. Triggers on "Java script", "Java utility", "PATH script", "system script", or requests for single-file Java programs installed in /usr/local/bin or similar PATH directories. Not for multi-file Java applications — use java-cli-app for those.
Generic, composable architecture rules for the Boundary-Control-Entity (BCE/ECB) pattern — business components, layer responsibilities, package structure, and cross-component relationships. Technology-neutral; meant to be composed with language- or framework-specific skills (e.g. microprofile-server, web-components, aws-cdk, java-cli-app). Use when creating, generating, scaffolding, writing, or reviewing code organized as business components with boundary/control/entity layers. Triggers on "BCE", "ECB", "Boundary-Control-Entity", "business component", "BC layout", "BC structure", "boundary layer", "control layer", "entity layer", or requests to organize, package, refactor, or review code along BCE lines.
Build Java 25+ projects with zb (Zero Dependencies Builder). Use when compiling, building, packaging, or running Java projects that have no external dependencies. Triggers on "build with zb", "zb build", "compile and package", "create executable JAR", or when a .zb configuration file is present in the project. Not for projects requiring Maven/Gradle dependency management.
Generate a GitHub Actions pipeline that builds a zb (Zero Dependencies Builder) project and publishes a GitHub Release with the produced JAR. Use whenever the user wants CI/CD, a build pipeline, a release workflow, or GitHub Actions for a zb-based Java project — phrases like "set up GitHub Actions for this zb project", "add a zb release pipeline", "create a build workflow", "automate the zb build/release", or when a project has a .zb config and needs continuous builds/releases. Trigger even if the user doesn't say "zb" explicitly, as long as the project is a zb project (a .zb file is present and there is no Maven/Gradle build).
Generate and run zunit tests for java-cli-app projects. Use when asked to create tests, write tests, add tests, or generate test files for a java-cli-app project. Triggers on "zunit", "write tests", "create tests", "add tests", "test this", "generate tests", or requests to test a java-cli-app application. Also trigger when the user asks to verify or validate behavior of a java-cli-app project. Not for JUnit tests or microprofile-server projects — use continuous-testing for those.
Create draw.io overview diagrams with consistent visual style. Use when asked to create, generate, or edit draw.io diagrams, architecture diagrams, component diagrams, or visual overviews of systems and modules. Triggers on "draw.io", "drawio", "create a diagram", "architecture diagram", "component diagram", or requests to visualize high-level system structure. Not for sequence diagrams or class diagrams.
Build modern static websites using semantic HTML and CSS without external dependencies or build systems
Live coding mode — generates code without running tests, system tests, or builds. Applies on top of any project skill (microprofile-server, java-cli-app, java-cli-script, etc.). Use during live demos, workshops, or rapid prototyping sessions where speed matters over verification. Triggers on "showtime", "live coding", "demo mode", "skip tests", or requests to generate code quickly without test execution.
Deliberately overengineer code by adding as many patterns, indirections, modules, anti-corruption layers, abstractions, and encapsulations as possible. Zero dependency on implementation. Use when asked to overengineer, enterprisify, enterprise-ify, abstract, add layers, add patterns, or make code "production-ready" in the most excessive way. Triggers on "enterprisify this", "overengineer this", "enterprise-ify", "add all the patterns", "make it abstract", "add indirection", "wrap this properly", or when maximum abstraction is requested for comedic or educational purposes.
Integrate zcfg (Zero Dependency Configuration Utility) into Java applications. Use when adding configuration loading, reading properties files, setting up application configuration, or integrating zcfg into a Java project. Triggers on "zcfg", "add configuration", "load properties", "application configuration with zcfg", or requests to use the zcfg library for configuration management.
Add colored terminal output to Java applications using zcl (Zero-dependency Colour Logger). Use when adding colored console output, terminal logging with colors, ANSI color support, or integrating zcl into a Java project. Triggers on "zcl", "colored output", "colored logging", "terminal colors", "ANSI colors", "console colors", or requests to add color-coded log output to a Java application.
Simplify, modernize, refactor, and beautify Java code to produce clean, idiomatic Java 25. Use when asked to distill, simplify, modernize, upgrade, refactor, clean up, beautify, or improve Java code. Triggers on "distill this Java", "modernize this code", "simplify this Java", "upgrade to modern Java", "refactor to Java 25", "clean up this code", "make this idiomatic", "beautify this Java", or when Java code needs transformation to current standards. Not for writing new code from scratch — use java-development for that.
Add zero-dependency argument parsing to Java CLI applications using the zargs pattern — an enum-based argument parser. Use when adding CLI argument parsing, command-line option handling, or adding options to a Java project. Triggers on "zargs", "argument parsing", "CLI arguments", "command-line options", "parse arguments", "add options", or requests to add argument/option parsing to a Java CLI application without external dependencies.
Write and refine README.md files for software projects targeting advanced developers. Use when asked to create, write, generate, update, refine, or review a README or README.md file. Triggers on "create a README", "write README", "update README", "review README", "generate README.md", or when a README.md is being created or edited as part of a project. Not for API documentation, changelogs, or non-README markdown files.
Architecture and coding rules for single-page applications using web components, BCE layering, lit-html templating, Redux Toolkit state management, and client-side routing. Web standards and web platform first, minimal external dependencies. Use when creating, scaffolding, generating, writing, or reviewing web component applications, custom elements, state management, client-side routing, or frontend BCE architecture. Not for server-side rendering or framework-heavy applications.
Convert Python scripts to zero-dependency Java 25 CLI programs. Use when asked to migrate, convert, port, or rewrite Python scripts (.py) to Java, or when translating a Python codebase to Java CLI scripts or apps. Triggers on "convert Python to Java", "migrate Python", "port to Java", "rewrite in Java", or when a .py file is presented with instructions to produce a Java equivalent. Prefer /java-cli-script for single-file scripts; switch to /java-cli-app when shared code duplication across scripts exceeds ~100 lines.
Continuous test-driven development loop — after every code change, builds the project, starts the server, and runs Unit Tests, Integration Tests, and System Tests. Applies on top of microprofile-server skill. Use during development when you want full verification after each change. Triggers on "continuous testing", "continuous-testing", "test loop", "st-loop", or requests to run all tests after every change.
Create high-level overview diagrams showing interactions between business components (BCs), subsystems, services, or systems. Use when asked to create architecture overviews, BC interaction diagrams, subsystem diagrams, service interaction diagrams, system landscapes, or integration maps. Triggers on "diagram", "overview diagram", "BC interaction", "business component diagram", "subsystem diagram", "service interaction", "component interaction", "architecture overview", "system diagram", "integration diagram", or requests to visualize how BCs, subsystems, or services communicate. Not for detailed class diagrams or sequence diagrams.
Generate Mermaid overview diagrams for architecture and component visualization. Use when asked to create, generate, or draw Mermaid diagrams, architecture overviews, component diagrams, dependency graphs, or system visualizations. Triggers on "mermaid diagram", "architecture diagram", "component overview", "dependency graph", "draw a diagram", or requests to visualize system structure. Not for sequence diagrams or class diagrams.