Java · For developers

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior.

xpinjection/test-driven-spring-boot

Looks up Android framework Java and AIDL APIs across versions with the android-api-diff CLI: signatures, availability, source files and hidden-API access code.

gkd-kit/gkd

Update LanceDB to a specific Lance release or tag. An agent skill from lancedb/lancedb.

lancedb/lancedb

Creates a Java SDK end-to-end test for the Copilot SDK that runs against a recorded YAML snapshot through a replay proxy, so CI needs no real authentication.

github/copilot-sdk

Generate a clear, concise GitHub PR title and description from the diff between two local git branches, and save it to prDescription.md in the repo root.

redis/jedis

Professional code security audit skill covering 55+ vulnerability types.

3stoneBrother/code-audit

Provides comprehensive code review guidance for React 19, Vue 3, Angular 17+, Svelte 5, Rust, TypeScript, Java, Java 8, PHP, Ruby, Rails, Python, Django, FastAPI, Go, C/.NET, Kotlin, Swift, Dart…

awesome-skills/code-review-skill

Runs controlled JMH experiments on the Caffeine cache to find shared contention and hot-path waste, then reviews correctness and returns a reviewable patch.

ben-manes/caffeine

Build or change a TeaQL application in Java, Rust, Go, Swift, Python, C/.NET, or TypeScript, including Kotlin/JVM applications that consume Java-generated libraries.

teaql/teaql-agent-kit

Build apps with the Claude API or Anthropic SDK. An agent skill from Kocoro-lab/Kocoro.

Kocoro-lab/Kocoro

Create well-structured GitHub issues from any source: meeting notes, transcriptions, conversation context, informal descriptions, or direct requests.

AxonIQ/AxonFramework

Scans a codebase for vulnerabilities with CodeQL's data flow and taint tracking in run-all or important-only modes, including data extensions for project-specific sources and sinks.

trailofbits/skills

Shows how to add product analytics events to Opik's frontend, Java backend and Python SDK, all reporting through Segment to PostHog with an opik_ name prefix.

comet-ml/opik

Add or extend Redis commands in the Lettuce client API end-to-end — a new core command, a family of new commands, an extension to an existing command's options, or a module/area command…

redis/lettuce

Apply Apache ShardingSphere's written coding standards when explicitly requested, or when code-implementation routes task-changed production, test, script, build, generated, or Maven POM artifacts…

apache/shardingsphere

Mall4j 开源版现有功能副驾驶：本地启动、mall4v/mall4m/mall4uni、商品/SKU、购物车、下单支付、订单发货、会员、运费、权限、部署排查。适用于下载 mall4j / yami-shop 后按现有功能使用或二次开发；不要编造开源版没有的能力。

gz-yami/mall4j

Audits a module by walking its git history commit by commit, tracking unresolved issues forward, and reporting the ones that survive to HEAD as findings.

ben-manes/caffeine

Run the full build-and-deploy.yaml workflow locally via act + Docker.

chewiebug/GCViewer

当用户要求审计 Java、.NET 或 PHP 源码/部署产物/反编译产物/安全发现，并需要默认脚本输出目录、报告输出目录、Java/.NET 反编译与反混淆参考、Java 组件 YAML 正则匹配扫描、确认漏洞判定标准、安全 Payload 和 BurpSuite 原始 HTTP 请求包证据时使用。仅用于授权代码审计和防御性安全验证。

RuoJi6/audit-skills

Bump Apache Fory release or post-release development versions across Java, Kotlin, Scala, Python, Rust, Go, C++, C, Dart, JavaScript, Swift, integration tests, examples, and source docs.

apache/fory

Statically pairs source files with test files to list code that no test references, using Roslyn for C# or tree-sitter for many languages, with no build.

dotnet/skills

Spring Boot 3.x development - REST APIs, JPA, Security, Testing, and Cloud-native patterns.

piomin/claude-ai-spring-boot

Creates Java + Spring Boot projects: Web applications, full-stack apps with Vue.js or Angular or React or vanilla JS, PostgreSQL, REST APIs, and Docker.

jdubois/dr-jskill

Steps for adding or maintaining a WeChat official API in the WxJava SDK, following its Maven multi-module layout, Java 8 compatibility and TestNG test conventions.

binarywang/WxJava

A skill your agent uses when writing or editing Javadoc for Lettuce public API — new methods, classes, deprecations, or when a reviewer asks to fix or improve doc comments.

redis/lettuce

Plays an authorized Game Boy or Game Boy Color ROM in one persistent headless Coffee GB session, inspecting frames and keeping an action trace for replay or tests.

trekawek/coffee-gb

Explain and reason about Dynamic Consistency Boundaries (DCB) and how Axon Framework 5 and Axon Server implement them.

AxonIQ/AxonFramework

Simulate GCViewer CI paths (pull request, develop snapshot, master release) with DRYRUN and selectable OpenJDK 8/17/21/25.

chewiebug/GCViewer

Edit, validate, debug, publish, and inspect ReachAI Workflow drafts through the Workflow AI Coding REST API.

w8123/EnterpriseAgentFramework

Create new skills, modify and improve existing skills for JavaClaw.

ClawRunr/JavaClaw

Develop or refactor Java, Python and QuickJS TV spiders in CatVodSpider using the TV shared APIs.

FongMi/CatVodSpider

A practical Java reference for Builder, Factory, Singleton, Strategy, Observer and other patterns, with a table matching problems to patterns.

decebals/claude-code-java

MkDocs documentation project reference covering CLI commands, mkdocs.yml configuration, Material theme setup, and plugin integration.

jeka-dev/jeka

Plans a WxJava setup for Java, Spring Boot or Solon projects that call WeChat services, from module and BOM choice to config and a minimal working call.

binarywang/WxJava

Run profile-driven bottleneck optimization across Apache Fory implementations (Java, C++, Python/Cython, Go, Rust, Swift, C, JavaScript/TypeScript, Dart, Kotlin, Scala).

apache/fory

Sets the sonar-java conventions for adding an analyzer rule: metadata from rule-api, test locations, MethodMatchers and what not to commit or change.

SonarSource/sonar-java

Maven build expertise for this multi-module Java project. An agent skill from skjolber/3d-bin-container-packing.

skjolber/3d-bin-container-packing

A skill your agent uses when preparing, installing, diagnosing, or explaining the host Android Emulator environment for flutterrustbridge local runtime validation, including Android SDK command-line…

fzyzcjy/flutter_rust_bridge

Shared reference for naming, function size, complexity and error handling rules that reviewer agents apply across TypeScript, Python, Go, Rust, Java, C# and Swift.

zereight/gitlab-mcp

Comprehensive code review for Java - clean code principles, API contracts, null safety, exception handling, and performance.

piomin/claude-ai-spring-boot

Runs a hostile review of the Caffeine Java caching library with parallel subagents that get no design docs, then challenges and consolidates their findings.

ben-manes/caffeine

Run, interpret, or modify Skylos safely. An agent skill from duriantaco/skylos.

duriantaco/skylos

Run a repeatable RDF4J performance loop against one JMH benchmark in Docker with Linux Java 26 and JFR CPU-time profiling.

eclipse-rdf4j/rdf4j

Write, rewrite, and format documentation code snippets into reusable, production-ready methods with necessary library imports and clean linting.

ClickHouse/clickhouse-java

Recommends which WxJava Maven module, BOM and example entry point fits a given WeChat product and server setup, from official accounts to payments.

binarywang/WxJava

Rebuild and restart the Saiku launcher fat-JAR after changing saiku-ui or Java code, without shipping stale UI bundles or breaking the running JVM.

spiculedata/saiku

Create a new Axon Framework 4→5 migration path documentation page.

AxonIQ/AxonFramework

A skill your agent uses when users want to practice or simulate Java, C++, Go, Golang, mixed-stack, or general backend technical interviews, including resume-based and job-description-based…

Hazehacker/backend-interview-simulator