Java

1,429 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

fdd

73

progmodEK/flow-driven-domain

Plugin Claude Code

Bundles 1 skill · 249 tokens together

Scaffolds a complete, runnable Spring Boot application on top of the flow-driven-domain (FDD) library (io.github.progmodek:flow). Turns a natural-language process description into states/actions/transitions, a workflow JSON, and the full project.

not rated 14 3mo ago A tokens not measured

cursorrules

74

ladliulivecn/cursor-rules

Cursor rule Cursor

A set of coding rules for Java and Spring Boot projects. Spring Boot is a Java framework for building web services and other applications.

not rated 13 2y ago A 775 tokens original MIT

arena-agent

75

daveepope/arena

Cursor rule Cursor

Arena — agent instructions (generated from AGENTS.md; do not edit by hand).

not rated 13 changed 1mo ago A 4,382 tokens original MIT

kotlin-lib

76

aoreshkov/kotlin-lib-mcp

Plugin Claude Code

Bundles 4 skills, 1 MCP server · 203 tokens together

Answers Kotlin/Java library questions from the real published sources jar — resolved signatures, KDoc, dependency tree and source search — instead of recalling them.

not rated 13 changed yesterday A tokens not measured original Apache-2.0

schemacrawler-ai

77

schemacrawler/SchemaCrawler-AI

MCP server Claude CodeCodexCursor +2

MCP server "schemacrawler-ai" as configured in schemacrawler/SchemaCrawler-AI. Runs in Docker (schemacrawler/schemacrawler-ai:17.9.0-1). Needs 11 environment variables to run.

not rated 12 today A tokens not measured

java-agent-debugger

78

PieceOfFall/jdbg

Plugin Claude Code

Bundles 2 skills, 1 MCP server · 167 tokens together

Debug Java programs interactively from the command line via the jdbg CLI: launch a program or attach to a running JVM (JDWP), set breakpoints, step through code, and inspect variables, expressions, threads, and exceptions. Stateful background sessions with structured (text/JSON) output. Cross-platform, native on…

not rated 12 3mo ago A tokens not measured original Apache-2.0

lambert0529/skills

Skill Claude CodeCodex

A Java code-generation guide for MyBatis-Plus and PageHelper, libraries used to access databases and create paginated results. It covers the usual layers of a Java web application, from database entities to REST endpoints.

not rated 11 9mo ago A 108 tokens original Apache-2.0

AyrtonAldayr/agent-skill-java-spring-framework

Skill Claude CodeCodex

Senior Java & Spring Boot 4 / Spring Framework 7 architect skill for 2026-standard development. Use when the user asks to build, scaffold, design, review, or explain Java applications using Spring Boot 4.x, Spring Framework 7.x, Spring Modulith, or any related Spring ecosystem project. Triggers include: creating REST…

not rated 11 8mo ago A 165 tokens

mindcockpit-ai/cognitive-core

Skill Claude Code

Spring Boot version upgrade paths from v2.x through v4.0. javax to jakarta migration, Spring Security 5 to 7, RestTemplate to RestClient, virtual threads, OpenRewrite recipes, and progressive migration strategies.

not rated 11 changed 6d ago A 52 tokens

does-it-work

82

TsakunovR/does-it-work

Skill Claude CodeCodex

A testing and quality-checking toolkit for running an application, finding bugs, and creating automated tests. It supports API tests and browser-based UI tests in Python or Java.

not rated 11 changed 1mo ago A 295 tokens original MIT

flydb-cli

83

zzxCoding/Flydb

Skill Claude CodeCodex

A command-line tool for managing database migrations, which are controlled changes that update a database's structure over time.

not rated 11 changed 1mo ago A SkillSpector: pass 141 tokens original Apache-2.0

javaperf

84

theSharque/mcp-jperf

MCP server Cursor

MCP server "javaperf" as configured in theSharque/mcp-jperf. Runs dist/index.js with node. Needs 1 environment variable to run.

not rated 10 changed 24d ago A Socket: warn tokens not measured

HumanBean17/jrag

Agent Claude Code

MUST BE USED PROACTIVELY. Universal read-only explorer agent. Combines jrag graph navigation (call chains, service boundaries, routes, impact analysis, FQN resolution) with broad file-system search (grep, glob, excerpt reading). Use for any exploration task: locating code, tracing dependencies, finding patterns…

not rated 9 29d ago A 93 tokens original MIT

how2useliteflow

86

bryan31/How2useLiteFlow

Skill Claude CodeCodex

A reference guide for LiteFlow, a Java framework for building business rules and process flows. It covers components, rules, data passed between steps, configuration sources, testing, monitoring, and AI-agent orchestration.

not rated 9 changed 27d ago A 144 tokens original Apache-2.0

ns3154/alibaba-java-coding-guidelines-skill

Skill Codex

A set of rules for reviewing, generating, and refactoring Java code against Alibaba Java Coding Guidelines, a published style and quality guide. It also covers related Spring, MyBatis, Maven, SQL, database, logging, error-handling, and security code.

not rated 9 5mo ago A 60 tokens original Apache-2.0

msbaek-tdd

88

msbaek/msbaek-claude-plugins

Plugin Claude Code

Bundles 28 skills, 10 agents, 2 hooks · 4,234 tokens together

Java + Spring Boot TDD workflow plugin with requirements input drafting, RGB cycle, feature-level autonomous implementation, Cucumber acceptance testing, local tidying, system-wide refactoring, and 18 optional refactoring skills. Plan phase and Web App acceptance/skeleton setup now delegate to dedicated agents instead.

not rated 8 changed 27d ago A tokens not measured original MIT

timefold-java-skill

89

3Taste/timefold-java-skill

Plugin Claude Code

Bundles 1 skill · 102 tokens together

Claude Code skill for designing and implementing scheduling, planning, and resource-allocation systems with Timefold Solver (Java). Guides through a 6-step modeling methodology from business requirements to domain classes, constraints, and solver config.

not rated 8 6mo ago A tokens not measured original Apache-2.0

javadocs

90

jamesward/hello-spring-mcp-server

MCP server Claude CodeCodexCursor +2

MCP server "javadocs", hosted remotely at www.javadocs.dev, as configured in jamesward/hello-spring-mcp-server.

not rated 8 3d ago A tokens not measured

java-8

91

WorkWork7mi/cursor-rules

Cursor rule Cursor

List names = users.stream() .map(User::getName) .filter(name -> name != null && !name.isEmpty()) .collect(Collectors.toList()).

not rated 7 1y ago A 2,489 tokens

xc404/kiwi

Cursor rule Cursor

A naming rule for Java code parameters marked with @ComponentParameter. Their keys must be flat names using letters, numbers, and underscores; dots are not allowed.

not rated 7 1mo ago A 803 tokens original MIT

mixinmcp

93

muon-rw/MixinMCP

Plugin Claude Code

Bundles 2 skills · 294 tokens together

Skills for the MixinMCP IntelliJ MCP tools: full-classpath dependency search, type hierarchies, bytecode inspection, reference-aware refactors, and SpongePowered Mixin / MixinExtras writing guidance.

not rated 7 +1 changed 1mo ago A tokens not measured GPL-3.0

dejared

94

hqkh4nh/dejared-mcp

Plugin Claude Code

Bundles 1 skill, 1 MCP server · 221 tokens together

Java decompiler and JAR analyzer. Decompile classes, search bytecode, and read resources embedded in JAR, WAR, EAR, and AAR archives.

not rated 7 2mo ago A tokens not measured original MIT

java-development

95

zander-zyx/java-development-skill

Skill Codex

Use when working on any Java or JVM project: plain Java, libraries, CLI tools, Maven/Gradle builds, Spring Boot, Jakarta EE, MyBatis/MyBatis-Plus, JPA/Hibernate, Lombok, Java tests, Java code review, API design, exception handling, security review, refactoring, dependencies, Java version upgrades, javax/jakarta…

not rated 7 +1 3mo ago A 102 tokens original MIT

vaadin-skills

96

vaadin/agent-skills

Plugin Claude Code

Bundles 3 skills, 1 MCP server · 384 tokens together

Skills and tools for building high-quality Vaadin 25 applications with Java/Flow — theming, visual design, and form layout. Includes the hosted Vaadin MCP server for current documentation and API lookup.

not rated 7 changed 28d ago A tokens not measured original Apache-2.0

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