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subtask MCP Server

local only

subtask runs on your own machine — the client starts it, so there is no endpoint to ping. 2 308 installs a week from pypi. Last commit 14 Oct 2026.

Background sub-agents for Claude Code, Codex, Kimi and OpenCode, over MCP, with a spend cap.

Installs per day peak 2 062 · avg 76
a month agotoday
2 308
Installs / week
pypi · subtask-mcp
0
Stars
0 open issues
14 Oct 2026
Last commit
from GitHub
MIT
License
Python

What the code does

We read the source, 23 h ago · rules ccca72095570

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 step.path → subtask/core.py:547
        done = 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 subtask -- uvx subtask-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "subtask": {
      "args": [
        "subtask-mcp"
      ],
      "command": "uvx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.subtask]
command = "uvx"
args = ["subtask-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "subtask": {
      "args": [
        "subtask-mcp"
      ],
      "command": "uvx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "subtask": {
      "args": [
        "subtask-mcp"
      ],
      "command": "uvx"
    }
  }
}

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subtask — questions

Answers built from our own checks of this server.

Why is there no uptime for subtask?
subtask 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 subtask-mcp was installed 2 308 times last week.
How do I connect subtask?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls subtask-mcp straight from pypi; nothing to host, nothing to sign up for.
How many people use subtask?
The pypi package subtask-mcp was installed 2 308 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is subtask 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.