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TopicForge MCP Server

local only

TopicForge runs on your own machine — the client starts it, so there is no endpoint to ping. 81 installs a week from pypi. Last commit 5 Sep 2026.

Read-only MCP server for ROS2 and DDS: topics, participants, QoS mismatches, bags.

Installs per day peak 516 · avg 37 · -68% w/w
a month agotoday
81
Installs / week
pypi · topicforge
3
Stars
0 open issues
5 Sep 2026
Last commit
0 releases in 90 days
MIT
License
Python

What the code does

We read the source, 20 h ago · rules 3dff92dd89df

Evidence

Things with no honest explanation: a promise that contradicts the code, code that runs at install time while hiding what it does, data leaving the machine.

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.

We found things in this code

Code changes quietly between releases, and nobody reads the diff of a dependency. We do, on every release — watch TopicForge and you get told the day something new turns up.

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 topicforge -- uvx topicforge
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "topicforge": {
      "args": [
        "topicforge"
      ],
      "command": "uvx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.topicforge]
command = "uvx"
args = ["topicforge"]
.cursor/mcp.json
{
  "mcpServers": {
    "topicforge": {
      "args": [
        "topicforge"
      ],
      "command": "uvx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "topicforge": {
      "args": [
        "topicforge"
      ],
      "command": "uvx"
    }
  }
}

This one needs environment variables set before it will start: TOPICFORGE_MODE (mock (deterministic fixtures, no ROS2 needed), live, or auto. Defaults to auto.), TOPICFORGE_DDS_BACKEND (DDS backend: mock, cyclone, fast, or auto. Requires the matching extra, e.g. pip install topicforge[dds].), TOPICFORGE_DDS_DOMAIN_ID (DDS domain id to observe, 0-232. Joined at startup; changing it requires a restart.), TOPICFORGE_TELEMETRY (Opt-in anonymous telemetry, off by default. When off, no network code path executes.). The author declared them in the registry entry; get the values from the project itself.

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TopicForge — questions

Answers built from our own checks of this server.

Why is there no uptime for TopicForge?
TopicForge 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 topicforge was installed 81 times last week.
How do I connect TopicForge?
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 topicforge straight from pypi; nothing to host, nothing to sign up for.
How many people use TopicForge?
The pypi package topicforge was installed 81 times in the last week. Week over week that is -68%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is TopicForge open source?
Yes — it is published under the MIT licence, written in Python and 3 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.