797 mods tagged Java that install into Codex, measured the same four ways as everything else here: what each costs in tokens on every session, what a security scan found and why, whether it is the original, and what changed.
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…
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.
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…
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.
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.
Skill Claude CodeCodex needs its repo
Expert knowledge for building Quarkus applications with Bazel using the rulesquarkus build system. Use when user asks about Quarkus+Bazel builds, augmentation, or troubleshooting.
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.
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…
Skill Claude CodeCodex
Act as a Senior/Lead Java Backend Engineer. Use when user asks to write, review, or architect Java code, Spring Boot 3 services, JPA/Hibernate, Maven/Gradle, microservices, REST/gRPC APIs, security, observability, or event-driven systems.
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.
SachieWang/java-jdtls-mcp-server
Skill Claude CodeCodex
Navigate Java projects, find definitions, and implementation details.
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.
Skill Claude CodeCodex
Talk to a Chronicle server from a Kotlin or Java application with the io.cratis:chronicle client - connection strings, ChronicleClient and the Spring Boot starter, @EventType classes, suspending append, reactors and reducers dispatched by first-parameter type, model-bound read models, classpath artifact discovery, and…
MCP server Claude CodeCodexCursor +2
Debug live JVMs through JDWP — from any MCP-compatible agent. Runs locally from the jdwp-mcp Python package.
Dmitriusan/mcp-jvm-diagnostics
MCP server Claude CodeCodexCursor +2
MCP server for JVM diagnostics — analyze thread dumps, detect deadlocks, parse GC logs, and get JVM tuning recommendations. Runs locally from the mcp-jvm-diagnostics npm package.
almasumdev/awesome-java-android-agent-skills
Skill Claude CodeCodex
Expert guidance on writing and maintaining Android Gradle build files in Groovy DSL for a Java project — product flavors, signing configs, build types, and dependency management. Use this when configuring build.gradle for new modules or flavors.
MCP server Claude CodeCodexCursor +2
Maven Central MCP — Java/JVM artifact registry. Remote server at gateway.pipeworx.io.
MCP server Claude CodeCodexCursor +2
A MCP server for Maven dependency version checking. Runs locally from the mvn-mcp-server Python package.
MCP server Claude CodeCodexCursor +2
MCP server providing Java development capabilities through Eclipse JDT.LS. Runs locally from the jons-mcp-java Python package.
MCP server Claude CodeCodexCursor +2
MCP Server for resolving Maven2 module versions with caching and logging. Runs locally from the maven-artifacts-mcp npm package.
MCP server Claude CodeCodexCursor +2
MCP server for Spring Boot codebase intelligence. Runs locally from the spring-api-intel-mcp Python package.
MCP server Claude CodeCodexCursor +2
MCP server "jar-inspector-mcp" as configured in pgatzka/jar-inspector-mcp. Runs locally from the jar-inspector-mcp Python package.
MCP server Claude CodeCodexCursor +2
MCP server "arthas-mcp" as configured in x0c/arthas-mcp. Runs locally from the arthas-mcp npm package.
MCP server Claude CodeCodexCursor +2
MCP server "jdtls-mcp" as configured in Kicey/jdtls-mcp. Runs locally from the jdtls-mcp npm package.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: