JVM MCP Server

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A lightweight JVM monitoring and diagnostic MCP (Multi-Agent Communication Protocol) server implementation based on native JDK tools. Provides AI agents with powerful capabilities to monitor and analyze Java applications without requiring third-party tools like Arthas.

Features

• Zero Dependencies: Uses only native JDK tools (jps, jstack, jmap, etc.)

• Lightweight: Minimal resource consumption compared to agent-based solutions

• High Compatibility: Works with all Java versions and platforms

• Non-Intrusive: No modifications to target applications required

• Secure: Uses only JDK certified tools and commands

• Remote Monitoring: Support for both local and remote JVM monitoring via SSH

Related MCP server: MCP System Info Server

Core Capabilities

Basic Monitoring

• Java process listing and identification

• JVM basic information retrieval

• Memory usage monitoring

• Thread information and stack trace analysis

• Class loading statistics

• Detailed class structure information

Advanced Features

• Method call path analysis

• Class decompilation

• Method search and inspection

• Method invocation monitoring

• Logger level management

• System resource dashboard

System Requirements

• Python 3.6+

• JDK 8+

• Linux/Unix/Windows OS

• SSH access (for remote monitoring)

Installation

Using uv (Recommended)

Using pip

From Source

Quick Start

Starting the Server

Using uv (Recommended)

Using uvx

Using Python directly

Using with MCP Configuration

Available Tools

JVM-MCP-Server provides a comprehensive set of tools for JVM monitoring and diagnostics:

• list_java_processes: List all Java processes

• get_thread_info: Get thread information for a specific process

• get_jvm_info: Get JVM basic information

• get_memory_info: Get memory usage information

• get_stack_trace: Get thread stack trace information

• get_class_info: Get detailed class information including structure

• get_stack_trace_by_method: Get method call path

• decompile_class: Decompile class source code

• search_method: Search for methods in classes

• watch_method: Monitor method invocations

• get_logger_info: Get logger information

• set_logger_level: Set logger levels

• get_dashboard: Get system resource dashboard

• get_jcmd_output: Execute JDK jcmd commands

• get_jstat_output: Execute JDK jstat commands

For detailed documentation on each tool, see Available Tools.

Architecture

JVM-MCP-Server is built on a modular architecture:

1. Command Layer: Wraps JDK native commands

2. Executor Layer: Handles local and remote command execution

3. Formatter Layer: Processes and formats command output

4. MCP Interface: Exposes functionality through FastMCP protocol

Key Components

• BaseCommand: Abstract base class for all commands

• CommandExecutor: Interface for command execution (local and remote)

• OutputFormatter: Interface for formatting command output

• JvmMcpServer: Main server class that registers all tools

Development Status

The project is in active development. See Native_TODO.md for current progress.

Completed

• Core architecture and command framework

• Basic commands implementation (jps, jstack, jmap, jinfo, jcmd, jstat)

• Class information retrieval system

• MCP tool parameter type compatibility fixes

In Progress

• Caching mechanism

• Method tracing

• Performance monitoring

• Error handling improvements

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the repository

2. Create your feature branch (git checkout -b feature/amazing-feature)

3. Commit your changes (git commit -m 'Add some amazing feature')

4. Push to the branch (git push origin feature/amazing-feature)

5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgements

• JDK tools documentation

• FastMCP protocol specification

• Contributors and testers