Java

Validate or fix LGPL-2.1-only headers, apply approved copyright provenance, and prepare provenance audits for renamed, split, copied, or extracted first-party code.

TotalCross/totalcross

Write and edit CCSDS MO service XML specification files following the established conventions of the mo-services-java project (ServiceSchema-v003).

esa/nanosat-mo-framework

Optimizes mica-ppocr Java parsers via batch run, failure diagnosis, and LabelMatcher/regex fixes.

lets-mica/mica-ppocr

Guide for writing modern Java 21 in a Grails and Groovy codebase: records, sealed classes, pattern matching, text blocks and how Java works alongside Groovy.

apache/grails-core

Create a new placeable block for a Minecraft Bedrock Edition add-on from a plain description, or change an existing one, such as a decorative, glowing, ore, crate, slab, stairs, or light-source…

Mojang/minecraft-creator-tools

Rules for preparing pull requests and commits in the Quarkus project: title conventions, description format, commit hygiene, labels, and contribution policies.

quarkusio/quarkus

Testing patterns for Vert.x Redis Client: test frameworks, async testing, test locations, container setup, and how to run tests.

vert-x3/vertx-redis-client

Support spec-driven development in projects that use OpenFastTrace, a system-requirements document in doc/systemrequirements.md, an arc42-style design in doc/design.md, and per-issue task plans in…

itsallcode/openfasttrace

Solon Java framework expert (NOT Spring). An agent skill from opensolon/soloncode.

opensolon/soloncode

Add integration tests to TestGCMetrics.java for new GC collector support added to new-gc-default-jmx-metrics.yaml.

DataDog/jmxfetch

Qdrant provides client SDKs for various programming languages, allowing easy integration with Qdrant deployments.

qdrant/skills

Run the Restate SDK conformance test suite locally against this SDK's Docker image.

restatedev/sdk-typescript

設計判断失敗パターン研修用エージェント。受講者からのJava実装依頼に対し、表向きは誠実に実装しつつ、裏で失敗パターンを混入させる。タグ [演習:NN] [演習:<slug] があれば指定パターンを1つ混入する。タグが無いときは適合度から3候補に絞って1つ選ぶか、一定割合で何も混入しないクリーン回にする。受講者が reveal または 答え合わせ…

wolfchief-inc/ai-failure-patterns

Build and deploy all sample-bot zip files into the target folder.

robocode-dev/tank-royale

ShizukuX codebase integrity checks. An agent skill from qianyumeng0228/ShizukuX.

qianyumeng0228/ShizukuX

A skill your agent uses when working in the znsio/teswiz repository to modify framework code, Cucumber/TestNG hooks, Applitools visual testing flows, configs/caps, or related docs/tests.

znsio/teswiz

Add or update a Robolectric JVM unit test for the FireCrasher library.

osama-raddad/FireCrasher

A skill your agent uses when defining or reviewing Doc View behavior contracts before changing PSI parsing, DTOs, Markdown output, uploads, exports, settings, UI-visible behavior, or IntelliJ…

liuzhihang/doc-view

Operate the TypeScript TRON wallet CLI for accounts, transfers, staking, governance, contracts, signing, chain queries, and password input with wallet-cli 4.14.0.

BofAI/skills

A skill your agent uses when modifying EasyPostman Swing UI fonts, especially when dialogs, labels, tables, tabs, or renderers look too large or too small, or when a change needs to stay consistent…

lakernote/easy-postman

使用 jar-analyzer-engine 从 JAR/WAR/Class 文件构建 SQLite 分析数据库。这是进行 Java 代码安全审计、方法调用分析的第一步。

jar-analyzer/jar-analyzer-claude

Mirror an external GitHub pull request into the internal GraalPython Bitbucket review flow, including OCA label checks, Jira creation or reuse, preserving PR commits, pre-commit cleanup, and handoff…

oracle/graalpython

Generate, build, and test Azure SDKs locally from TypeSpec with automatic customization.

Azure/azure-sdk-for-android

Runs three parallel reviewers on a diff or branch, one blind, one design-aware and one matching past bug patterns, then triages their findings.

ben-manes/caffeine

Create, edit, and debug vanilla Minecraft 26.x and 1.21.x datapacks, including functions, advancements, recipes, loot tables, predicates, tags, and pack metadata.

Jahrome907/minecraft-agent-skills

Provides comprehensive code review guidance for React 19, Vue 3, Rust, TypeScript, Java, Python, and C/C++.

andrew-yangy/gru-ai

A skill your agent uses when working on the Harmonica Kotlin DB migration tool — planning, phase work, PRs, or anything touching this repo.

KenjiOhtsuka/harmonica

Guide maintainers through the multi-step release process — version bump, CI verification, tagging, Maven Central deployment, SNAPSHOT bump, and versioned documentation.

a2aproject/a2a-java

Review changes in clickhouse-java for correctness, compatibility, API stability, and missing tests.

ClickHouse/clickhouse-java

Diagnose, troubleshoot, and advise on any Qdrant deployment by loading the latest official Qdrant skills live from skills.qdrant.tech.

qdrant/skills

Initialize git in a local project without a repository, connect it to a remote, and generate a proper .gitignore.

exception-coder/npe_get_jobs

Author and maintain versioned Selenium WebDriver tests with Java and JUnit 5.

fugazi/test-automation-skills-agents

A skill your agent uses for code, build, and test changes in geogeometry to preserve multiplatform support, geospatial correctness, and strict no-new-dependencies policy.

jillesvangurp/geogeometry

A skill your agent uses for Dependabot PRs, dependency bumps, Gradle or Maven dependency updates, GitHub Actions updates, dependency changelog/licence/release-note review, JVM/classfile checks, and…

kernitus/BukkitOldCombatMechanics

Prepare, build, sign, verify, stage, vote on and publish Apache Roller releases, including release website updates and announcement drafts.

apache/roller

Create a new item for a Minecraft Bedrock Edition add-on from a plain description, or change an existing one, such as a weapon, tool, food, armor piece, throwable, or collectible, including its icon…

Mojang/minecraft-creator-tools

Write Subspace clients in C++, Python, Rust, or Java. An agent skill from dallison/subspace.

dallison/subspace

Diagnose and fix scope or continuation lifecycle failures in dd-trace-java instrumentation tests.

DataDog/dd-trace-java

Quarkus configuration conventions: @ConfigMapping interfaces, config phases, and migration from legacy @ConfigRoot classes.

quarkusio/quarkus

Build plugin SDK dependencies locally and refresh ThirdParty binaries

getsentry/sentry-unreal

Gerar, testar na TV e publicar o Nuvio nativo para Android TV / Google TV (.apk, host SDL2 + Media3 em android/, nucleo C com -DNVANDROID).

iqui27/nuvio-native-legacy

Analyze Java code using Eclipse JDT tools — type hierarchy, find references, call hierarchy, compilation errors, quick fixes, and import suggestions.

gradusnikov/eclipse-chatgpt-plugin

Reproduce a Vaadin Flow component bug from a GitHub issue in vaadin/flow-components or a component-specific issue in vaadin/flow.

vaadin/flow-components

Maintain and extend the arangodb/spring-data repository. An agent skill from arangodb/spring-data.

arangodb/spring-data

A skill your agent uses 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…

jabrena/plinth

Installs the Amplicode IntelliJ plugin into IntelliJ IDEA (Ultimate/Community) and GigaIDE on the user's machine.

Amplicode/spring-skills

Work with OpenFastTrace requirement tracing, including specification items, artifact IDs, coverage markers, Markdown and Gherkin syntax, and trace validation.

itsallcode/openfasttrace

Run any Gradle task and report the result. An agent skill from johannilsson/sthlmtraveling.

johannilsson/sthlmtraveling