Java

1,190 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.

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

coding-standards

98

alexmond/jhelm

Skill Claude CodeCodex

Two thresholds apply — consider and enforce.

not rated 4 11d ago A 21 tokens original Apache-2.0

paper-plugin-dev

100

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

101

loong95/javadoc-mcp

Skill Claude CodeCodex

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

102

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

103

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

gregario/lorcana-oracle

Instructions file

Instructions for gregario/lorcana-oracle, covering project instructions, workflow overview, spec mode (openspec), spec sync rule and execution mode (superpowers).

not rated 3 2mo ago A 725 tokens original MIT

rules-quarkus

105

kinhluan/rules-quarkus-skills

Skill Claude CodeCodex

Expert knowledge for building Quarkus applications with Bazel using the rulesquarkus build system. Use when user asks about Quarkus+Bazel builds, augmentation, or troubleshooting.

not rated 3 2mo ago A 42 tokens original MIT

jbang-mcp-server

106

glaforge/java-stdio-mcp-server

Skill Claude CodeCodex

Scaffolds and installs zero boilerplate Java-based MCP STDIO servers using JBang and LangChain4j for Gemini CLI. Use this to quickly bootstrap an MCP server from scratch.

not rated 2 6mo ago B 43 tokens

jabrena/cursor-rules-examples

Skill Claude CodeCodex

Use when you need to review, improve, or troubleshoot a Maven pom.xml file — including dependency management with BOMs, plugin configuration, version centralization, multi-module project structure, build profiles, or any situation where you want to align your Maven setup with industry best practices. Part of the…

not rated 2 8d ago A 71 tokens original Apache-2.0

spring-batch-6

110

antonarhipov/sdd-workshop

Skill Claude CodeCodex

Authoritative guidance for Spring Batch 6.x — writing new batch jobs, migrating from 5.x to 6.x, and reviewing or debugging batch code. Make sure to use this skill whenever the user mentions Spring Batch, batch jobs, Tasklets, chunk-oriented steps, item readers/writers, or these APIs: JobRepository, JobOperator…

not rated 2 3mo ago A 224 tokens

java-backend-team

111

yandong2023/java-backend-team

Skill Claude CodeCodex

A set of working guidelines for developing Java back-end software, especially applications built with Spring and common databases and messaging systems.

not rated 3 4mo ago A 0 tokens original MIT

quintesse/leyden-perf-test

Instructions file CodexOpenCode

Instructions for quintesse/leyden-perf-test, covering agents.md - leyden performance test harness, project overview, purpose, primary goals and current state.

not rated 2 1mo ago B 8,606 tokens original Apache-2.0

java

113

mywand/cusrsor-do-it

Cursor rule Cursor

A set of coding and engineering guidelines for modern Java, including Java 17 and 21. It covers project structure, dependencies, naming, errors, testing, security, databases, APIs, deployment, and code quality.

not rated 2 7mo ago A 0 tokens original Apache-2.0

java-coding-guideline

115

gabia/agent-skills

Skill Claude CodeCodex

Use when writing, reviewing, or refactoring Java code to enforce baseline conventions for imports, nullability, immutability, exceptions, resource handling, naming, and concurrency.

not rated 2 1mo ago A 41 tokens original MIT

nimbly-dev/mcp-java-dev-tools

Skill Claude CodeCodex

Discover bounded Java method drill candidates or run a Probe-guided diagnostic drill for one selected method and return an evidence-backed Markdown report.

not rated 2 4d ago A 36 tokens

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