Heddle MCP Server

by davet47 Your server? Claim it

local only

Heddle runs on your own machine — the client starts it, so there is no endpoint to ping. 113 installs a week from pypi. Last commit 2 Sep 2026.

Content-addressed contracts and a verification cache that cut agent context by skipping proven code.

Installs per day peak 49 · avg 21 · -19% w/w

a month agotoday

113

Installs / week

pypi · heddle-mcp

Stars

2 open issues

2 Sep 2026

Last commit

from GitHub

Apache-2.0

License

Python

What the code does

We read the source, 5 d ago · rules 995398eba69f

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.

File ships in the package but is absent from the source [пакет] src/heddle/__init__.py:1, [пакет] src/heddle/api.py:1, [пакет] src/heddle/cache_server.py:1 и ещё 21

этот файл ставится пользователю, но в репозитории его нет

Runs an external command src/hashloom/langs/go.py:57, src/hashloom/langs/java.py:75, src/hashloom/langs/python.py:47 и ещё 8

            subprocess.run([cand, "version"], capture_output=True, check=True, timeout=30)

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

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

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.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add heddle -- uvx heddle-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "heddle": {
      "command": "uvx",
      "args": [
        "heddle-mcp"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.heddle]
command = "uvx"
args = ["heddle-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "heddle": {
      "command": "uvx",
      "args": [
        "heddle-mcp"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "heddle": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "heddle-mcp"
      ]
    }
  }
}

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Heddle — questions

Answers built from our own checks of this server.

Why is there no uptime for Heddle?

Heddle 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 heddle-mcp was installed 113 times last week.

How do I connect Heddle?

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 heddle-mcp straight from pypi; nothing to host, nothing to sign up for.

How many people use Heddle?

The pypi package heddle-mcp was installed 113 times in the last week. Week over week that is -19%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Heddle open source?

Yes — it is published under the Apache-2.0 licence, written in Python, 2 stars on GitHub and 2 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.