TopicForge

io.github.yaniswav/topicforge

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

Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "topicforge": {
      "command": "uvx",
      "args": [
        "topicforge"
      ],
      "env": {
        "TOPICFORGE_MODE": "auto",
        "TOPICFORGE_DDS_BACKEND": "mock",
        "TOPICFORGE_DDS_DOMAIN_ID": "0",
        "TOPICFORGE_TELEMETRY": "off"
      }
    }
  }
}
Environment variables
  • TOPICFORGE_MODEmock (deterministic fixtures, no ROS2 needed), live, or auto. Defaults to auto.
  • TOPICFORGE_DDS_BACKENDDDS backend: mock, cyclone, fast, or auto. cyclonedds is a core dependency on platforms with wheels (Linux x86_64, Windows x64, macOS; Python 3.10-3.13); the [dds] extra remains an alias.
  • TOPICFORGE_DDS_DOMAIN_IDDDS domain id to observe, 0-232. Joined at startup; changing it requires a restart.
  • TOPICFORGE_TELEMETRYOpt-in anonymous telemetry, off by default. When off, no network code path executes.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.9.0
Registry
active
Published
11/2/2026
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