Unity MCP vs Hera Agent Unity
Unity MCP is an MCP server published by shiranui-isuzu.dev. Marketplaces we read that list it: 1 (Official MCP Registry). Hera Agent Unity is an MCP server published by NotNull92. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-27. 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 |  Unity MCP |  Hera Agent Unity |
|---|---|---|
| Official MCP Registry | Listed Version: 4.4.2 Forks (GitHub): 28 Stars (GitHub): 336 Not marked · First seen |
Listed Version: 0.2.17 Downloads/month (npm): 242 Downloads/week (npm): 29 Forks (GitHub): 5 Stars (GitHub): 29 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 MCP | Hera Agent Unity |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 336 (better) | 29 (worse) |
| Forks (GitHub) (differs) | 28 (better) | 5 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (IsuzuUnityCli) | On your machine (hera-agent-unity) |
| Transport | stdio | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 2, secrets among them: 0 | 1, secrets among them: 0 |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/isuzu-shiranui/unitymcp | github.com/notnull92/hera-agent-unity |
| Changes in the last 7 days | 0 | 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
Unity MCP
Unity Editor automation for AI agents: scenes, prefabs, assets, shaders, Timeline, tests, builds.
Hera Agent Unity
Control and verify a live Unity Editor through a local, low-token MCP server.
How to run each
Unity MCP
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Hera Agent Unity As a local MCP server: npm package
claude mcp add --transport stdio hera-agent-unity -- npx -y hera-agent-unity mcp --transport stdioCommands 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
Only Unity MCP asks for
UNITY_MCP_HOSTUNITY_MCP_STATE_DIR
Only Hera Agent Unity asks for
HERA_MCP_ENABLED
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: Unity MCP · What it can do: Hera Agent Unity · Compare two other plugins
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.