procm-mcp

A Model Context Protocol (MCP) server for process management.

Supported features

• Secure and automatable process creation
• Cleanup created processes automatically on termination (e.g. exiting claude code)
• Common process management features supported, restarting, deleting, checking status or retreving stdout/stderr of processes

Using these features, LLMs start processes like development servers, docker-compose, or test watchers and check their outputs to fix bugs automatically.

Installation

npm i -D procm-mcp

`.mcp.json`

{
  "mcpServers": {
    "procm-mcp": {
      "command": "node",
      "args": ["./node_modules/procm-mcp/build/index.js"],
      "env": {}
    }
  }
}

Secure process creation

You can permit LLMs to use `start-process` tool without confirmation, because procm-mcp only allow whitelisted process creations.

LLMs will ask you to use `allow-start-process` tool to add specific process creation to the whitelist.

Once you allow a process creation, you don't have to confirming it anymore as long as the command and the working directory are the same.

I call it "allow-x pattern", which can balances security and usability in MCP.

Warning: Do not permit LLMs to use `allow-start-process` without confirmation.That means "Do anything you want to".

Tools

• `allow-start-process` Allow specific processes to be created
  • `script` (required): The script/command to allow
  • `args` (optional): Array of arguments
  • `cwd` (optional): Working directory
• `start-process` Start a new process with specified script and arguments
  • `script` (required): The script/command to execute
  • `name` (optional): A friendly name for the process
  • `args` (optional): Array of arguments to pass to the script
  • `cwd` (required): Working directory for the process
  • `envs` (optional): Environment variables to set for the process
• `delete-process` Stop and remove a process by ID.The default signal is SIGTERM, but SIGKILL(force killing) will be sent after 10 seconds unless the process exits.
  • `id` (required): The process ID
• `restart-process` Restart an existing process by ID
  • `id` (required): The process ID
• `get-process-info` Get detailed information about a process
  • `id` (required): The process ID
• `list-processes` List all currently managed processes
  • No parameters required
• `get-process-stdout` Retrieve stdout logs from a process
  • `id` (required): The process ID
  • `chunkCount` (optional): Number of recent log entries to retrieve (default: 10)
• `get-process-stderr` Retrieve stderr logs from a process
  • `id` (required): The process ID
  • `chunkCount` (optional): Number of recent log entries to retrieve (default: 10)

License

MIT