Unity vs Bitbybit CAD MCP
Unity is a plugin bundle for AI coding tools published by Unity-Technologies. Marketplaces we read that list it: 2 (Claude Code: claude-plugins-official, Claude: knowledge-work-plugins). Bitbybit CAD MCP is an MCP server published by bitbybit.dev. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-12. 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 |  Bitbybit CAD MCP | |
|---|---|---|
| Claude Code: claude-plugins-official | Listed Version: 0.1.6-beta Forks (GitHub): 39 Stars (GitHub): 405 Not marked · First seen |
Not listed |
| Claude: knowledge-work-plugins | Listed Version: 0.1.6-beta Forks (GitHub): 39 Stars (GitHub): 405 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.5.0 Downloads/month (npm): 1 263 Downloads/week (npm): 187 Forks (GitHub): 23 Stars (GitHub): 203 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 | Unity | Bitbybit CAD MCP |
|---|---|---|
| Marketplaces that list it (differs) | 2 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 405 (better) | 203 (worse) |
| Forks (GitHub) (differs) | 39 (better) | 23 (worse) |
| Last release (differs) | Not published | 2026-10-12 |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (mcp.bitbybit.dev/mcp) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 31 | Not a bundle |
| Licence (differs) | LicenseRef-Unity-Companion-License | Not stated |
| Repository (differs) | github.com/unity-technologies/unity-agent-plugin | github.com/bitbybit-dev/bitbybit |
| Changes in the last 7 days (differs) | 0 | 1 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | not checked yet |
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
Unity
Unity's official plugin for Claude Code, with curated skills for game development, monetization, and performance optimization.
Bitbybit CAD MCP
Bitbybit 3D parametric CAD API, version-exact, for coding agents: search, describe, examples, guide
How to run each
Unity As a Claude Code plugin
/plugin install unity@claude-plugins-officialBitbybit CAD MCP As a remote MCP server
claude mcp add --transport http cad https://mcp.bitbybit.dev/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: Unity · What it can do: Bitbybit CAD MCP · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the public marketplace file https://github.com/anthropics/knowledge-work-plugins/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.