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Green MCP Server

by rlawogh1005 Your server? Claim it
local only

Green MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 101 installs a week from pypi. Last commit 26 Aug 2026.

Measure a program's CPU energy and LLM tokens, then refactor it cheaper. Measure, never estimate.

Installs per day peak 30 · avg 15 · -8% w/w
a month agotoday
101
Installs / week
pypi · green-mcp
0
Stars
0 open issues
26 Aug 2026
Last commit
from GitHub
MIT
License
Python

What the code does

We read the source, 4 d ago · rules 995398eba69f

A tool parameter reaches a dangerous call

A value the model can set ends up inside a file or shell call. That is not a flaw by itself — for a terminal server it is the job — but it is where things go wrong when it is not.

A tool parameter reaches a dangerous call measure_tokens.command → src/green_mcp/tokens/observer.py:49
        proc = subprocess.run(
Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

A tool parameter here reaches a dangerous call

That is not a flaw by itself — but it is where things go wrong when it is not the job. We re-read this code on every release. Watch it and you hear from us the day another one appears.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add green-mcp -- uvx green-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "green-mcp": {
      "command": "uvx",
      "args": [
        "green-mcp"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.green-mcp]
command = "uvx"
args = ["green-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "green-mcp": {
      "command": "uvx",
      "args": [
        "green-mcp"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "green-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "green-mcp"
      ]
    }
  }
}

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Green MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Green MCP?
Green MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package green-mcp was installed 101 times last week.
How do I connect Green MCP?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls green-mcp straight from pypi; nothing to host, nothing to sign up for.
How many people use Green MCP?
The pypi package green-mcp was installed 101 times in the last week. Week over week that is -8%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Green MCP open source?
Yes — it is published under the MIT licence, written in Python and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.