Java

1,628 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.

timefold-java-skill

121

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 6 4mo ago A tokens not measured original Apache-2.0

ETHAN0430/java-class-analyzer-mcp

MCP server Claude CodeCodexCursor +2

MCP server "java-class-analyzer-mcp-server" as configured in ETHAN0430/java-class-analyzer-mcp. Runs locally from the @yifei/java-class-analyzer-mcp-server npm package.

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

cosbort/agent-skills

Skill Claude CodeCodex

Enterprise-grade Spring Boot 3.5.x/4.x development guide. Use when building Spring Boot APIs, microservices, or enterprise Java applications. Covers Java Records as DTOs, Virtual Threads, ProblemDetail (RFC 7807), RestClient, structured logging, Testcontainers, observability, sealed exception hierarchies, and GraalVM…

not rated 6 +1 1mo ago A 104 tokens original MIT

jmh

125

umit/skills

Skill Claude CodeCodex

Write Java microbenchmarks with JMH (Java Microbenchmark Harness) that produce trustworthy numbers — not numbers distorted by JIT dead-code elimination, constant folding, insufficient warmup, or single-fork JIT contamination. Use this skill whenever the user writes @Benchmark, mentions JMH, microbenchmark, throughput…

not rated 6 +1 4mo ago A 273 tokens original MIT

dejared

126

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 5 15d ago A tokens not measured original MIT

java-development

127

zander-zyx/java-development-skill

Skill Claude CodeCodex

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 5 1mo ago A 102 tokens original MIT

evals4j CLAUDE.md

128

dvarahq/evals4j

Instructions file Claude Code

Instructions for dvarahq/evals4j, covering evals4j, layout, build, parity discipline and releasing.

not rated 5 7d ago A 1,095 tokens original MIT

java-skills

129

full-stack-skills/java-skills

Plugin Claude Code

Bundles 35 skills · 5,518 tokens together

Java Skills is a curated collection of Agent Skills for AI coding agents, part of the Full Stack Skills ecosystem maintained by PartMe.AI.

not rated 5 17d ago A tokens not measured

vaadin-skills

130

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 5 17d ago A tokens not measured original Apache-2.0

backend-developer

131

cefothe/hitl-engineering-jprime-2026-workshop

Agent Claude Code

Use this agent when you need hands-on backend implementation, refactoring, debugging, or performance work — primarily in modern Java 21+ and the Spring ecosystem, with working fluency in Kotlin, TypeScript/Node, Go, and Python. Implements features against acceptance criteria, writes tests alongside code, wires in…

not rated 5 3mo ago A 388 tokens

databricks-solutions/partner-ai-dev-kit

Skill Claude CodeCodex

PWAF-compliant Databricks JDBC Driver (databricks-jdbc v3+): PAT, OAuth M2M, OAuth U2M (custom OAuth app, token-env). Use when building or testing Java SQL warehouse integrations.

not rated 5 4mo ago A 57 tokens

java-code-simplifier

133

lltx/skills

Skill Claude Code

Simplifies, refines, and optimizes Java code for clarity, safety, and maintainability while preserving all functionality. Use whenever you've written or modified Java code, when the user asks to "simplify", "clean up", "optimize", "refactor", or "review" Java code, when implementing Java features, fixing Java bugs, or…

not rated 5 3mo ago A 108 tokens

Aorls/java-class-analyzer-mcp

MCP server Claude CodeCodexCursor +2

Universal MCP server for analyzing Java classes from Maven dependencies with full JavaDoc support. Runs locally from the java-class-analyzer-mcp npm package.

not rated 5 10mo ago A tokens not measured original MIT

jooq-mcp CLAUDE.md

135

martinellich/jooq-mcp

Instructions file Claude Code

Claude Code instructions for martinellich/jooq-mcp, covering claude.md, project overview, key technologies, build and run commands and build the project.

not rated 4 5d ago A 901 tokens original Apache-2.0

gpt-pro

137

scasella/codex-gpt-pro

Skill Codex

Operate ChatGPT Pro through Browser Use/Playwright or Computer Use. Use when the user asks Codex to ask GPT Pro, prompt GPT Pro, use ChatGPT Pro, send a prompt to ChatGPT Pro/GPT Pro, or wait for a GPT Pro result. Checks whether Browser Use/Playwright and/or Computer Use are available, asks for a first-run default…

not rated 4 4mo ago A 130 tokens original MIT

composite/korean-skills

Skill Claude CodeCodex

Use when reviewing or writing eGovFrame 4.x or 5.x Java code — Controller, Service, DAO, configuration, or library usage. Covers inheritance requirements, forbidden call patterns, and architecture constraints. Assumes Spring Framework knowledge.

not rated 4 5mo ago A 55 tokens original MIT

jacoco

139

alexmond/jhelm

Skill Claude Code

Check JaCoCo code coverage for jhelm modules.

not rated 4 3d ago A 13 tokens original Apache-2.0

paper-plugin-dev

141

ATOMGAMERAGA/Paper-ClaudePlugin

Plugin Claude Code

Bundles 1 skill · 151 tokens together

Minecraft Paper plugin development skill for Claude Code. Comprehensive reference for Java 21 plugin coding targeting Paper 1.21.x, covering API usage, event handling, commands, NMS/internals access, packet manipulation, performance optimization, and best practices.

not rated 4 5mo ago A tokens not measured original MIT

browse-java-javadocs

142

loong95/javadoc-mcp

Skill Codex

Inspect external Java and JVM library APIs through the javadoc-cli shell command using Maven coordinates. Use when Codex needs authoritative JavaDoc instead of guessing, especially for tasks like finding the right package or class, checking method overloads, reading parameter or return documentation, confirming…

not rated 4 3mo ago A 101 tokens original Apache-2.0

java-jar-mcp

143

biggerball/java-jar-mcp

MCP server Claude CodeCodexCursor +2

MCP server for Java Maven projects to provide jar class definitions to AI. Runs locally from the @biggerball/java-jar-mcp npm package.

not rated 4 5mo ago A tokens not measured original MIT

java-refactor-mcp

144

egn88/refactor-mcp

MCP server Claude CodeCodexCursor +2

MCP server "java-refactor-mcp" as configured in egn88/refactor-mcp. Runs locally from the java-refactor-mcp npm package.

not rated 4 5mo ago A tokens not measured

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