JVM MCP Server
This is an implementation project of a JVM-based MCP (Model Context Protocol) server. The project aims to provide a standardized MCP server implementation for the JVM platform, enabling AI models to better interact with the Java ecosystem.
What is JVM MCP Server?
JVM MCP Server is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to this is an implementation project of a jvm-based mcp (model context protocol) server. the project aims to provide a standardized mcp server implementation for the jvm platform, enabling ai models to b...
This is an implementation project of a JVM-based MCP (Model Context Protocol) server. The project aims to provide a standardized MCP server implementation for the JVM platform, enabling AI models to better interact with the Java ecosystem.
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- This is an implementation project of a JVM-based MCP (Model
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx jvm-mcp-serverConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use JVM MCP Server
JVM MCP Server is a Python-based MCP server that gives AI assistants live visibility into running Java Virtual Machine processes. It exposes 15 tools — including `list_java_processes`, `get_memory_info`, `get_thread_info`, `decompile_class`, `search_method`, and `watch_method` — so Claude can inspect JVM internals, diagnose memory leaks, analyze thread contention, and dynamically change logger levels without attaching a debugger. It supports both local JVM monitoring using native JDK tools and remote monitoring over SSH.
Prerequisites
- Python 3.10 or later and uv package manager (`pip install uv`)
- JDK installed on the machine where target JVM processes run (provides jcmd, jstat, etc.)
- An MCP client such as Claude Desktop
- For remote monitoring: SSH access to the target host and credentials (SSH_HOST, SSH_USER, SSH_PASSWORD or SSH_KEY)
- Sufficient OS permissions to attach to target JVM processes (may require sudo or matching user)
Install jvm-mcp-server
Install the package via uv or pip. uv is recommended for faster dependency resolution.
uv pip install jvm-mcp-server
# or
pip install jvm-mcp-serverConfigure environment variables for remote monitoring (optional)
For SSH-based remote JVM monitoring, create a `.env` file with your remote host credentials. Skip this step for local-only monitoring.
SSH_HOST=your-remote-host
SSH_PORT=22
SSH_USER=your-username
SSH_PASSWORD=your-password
# or use SSH_KEY=/path/to/private/keyStart the server and verify it works
Run the server locally to confirm it can detect Java processes on the current machine.
uv run jvm-mcp-serverAdd the server to your MCP client configuration
Edit `claude_desktop_config.json` to register jvm-mcp-server. For remote monitoring, include the `--env-file` argument pointing to your credentials file.
Restart Claude Desktop and start monitoring JVM processes
After restart, ask Claude to list running Java processes using the `list_java_processes` tool, then drill into memory or thread details.
JVM MCP Server Examples
Client configuration
Add this to `claude_desktop_config.json` to run jvm-mcp-server in local mode. For remote mode, replace the args with the path to your project directory and `.env` file.
{
"mcpServers": {
"jvm-mcp-server": {
"command": "uv",
"args": ["run", "jvm-mcp-server"]
}
}
}Prompts to try
Use these prompts to inspect and debug running JVM applications through Claude.
- "List all running Java processes and show me their process IDs."
- "Show memory usage (heap and non-heap) for the Tomcat process with PID 12345."
- "Get a thread dump for the Spring Boot application and identify any deadlocks."
- "Search for all methods named `handleRequest` in the running JVM classes."
- "Change the log level for `com.example.service` to DEBUG without restarting the app."Troubleshooting JVM MCP Server
Tools return 'permission denied' when attaching to JVM processes
Diagnostic tools require the same OS user as the JVM process, or root. Either run `uv run jvm-mcp-server` as the user who owns the Java process, use `sudo`, or in Docker set `--privileged` mode.
No Java processes listed even though Java is running
Ensure the JDK (not just JRE) is installed — the server relies on `jcmd` and `jstat` which are JDK-only tools. Verify with `which jcmd` and `jcmd -l`.
Remote SSH monitoring fails with authentication errors
Check that `SSH_HOST`, `SSH_USER`, and either `SSH_PASSWORD` or `SSH_KEY` are correctly set in your `.env` file. Test the SSH connection manually with `ssh user@host` before retrying.
Frequently Asked Questions about JVM MCP Server
What is JVM MCP Server?
JVM MCP Server is a Model Context Protocol (MCP) server that this is an implementation project of a jvm-based mcp (model context protocol) server. the project aims to provide a standardized mcp server implementation for the jvm platform, enabling ai models to better interact with the java ecosystem. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install JVM MCP Server?
Follow the installation instructions on the JVM MCP Server GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with JVM MCP Server?
JVM MCP Server works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is JVM MCP Server free to use?
Yes, JVM MCP Server is open source and available under the MIT License license. You can use it freely in both personal and commercial projects.
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