radius vs build123d MCP
radius is a plugin bundle for AI coding tools published by radius-project. Marketplaces we read that list it: 1 (Copilot CLI: github/awesome-copilot). build123d MCP is an MCP server published by pzfreo. Marketplaces we read that list it: 2 (Official MCP Registry, PyPI (MCP servers)). As of our marketplace pass on 2026-10-24. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  radius |  build123d MCP |
|---|---|---|
| Copilot CLI: github/awesome-copilot | Listed Version: 0.2.3 Forks (GitHub): 3 Stars (GitHub): 6 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.3.91 Downloads/month (PyPI): 5 102 Downloads/week (PyPI): 1 819 Forks (GitHub): 17 Stars (GitHub): 126 Not marked · First seen |
| PyPI (MCP servers) | Not listed | Listed Version: 0.3.91 Downloads/month (PyPI): 5 102 Downloads/week (PyPI): 1 819 Forks (GitHub): 17 Stars (GitHub): 126 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | radius | build123d MCP |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 6 (worse) | 126 (better) |
| Forks (GitHub) (differs) | 3 (worse) | 17 (better) |
| Last release (differs) | 2026-10-22 (better) | 2026-10-16 (worse) |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (build123d-mcp) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | github.com/radius-project/ai-extensions | github.com/pzfreo/build123d-mcp |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
radius
Model, visualize, and deploy applications with Radius from the GitHub Copilot app and CLI.
build123d MCP
AI-driven 3D CAD via build123d: execute, render, measure, and export geometry interactively.
How to run each
radius
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
build123d MCP As a local MCP server: PyPI package
claude mcp add --transport stdio build123d-mcp -- uvx build123d-mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: radius · What it can do: build123d MCP · Compare two other plugins
Data comes from the public marketplace file https://github.com/github/awesome-copilot/blob/HEAD/.github/plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Package data comes from the Python Package Index (pypi.org). Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.