Hera Agent Unity MCP Server

Give your AI coding agent hands, eyes, and a checklist inside Unity. Codex, Claude, Cursor, Copilot, AntiGravity, and other shell-capable agents can inspect your live Unity Editor, change it, run it, test it, see the result, and keep fixing until the evidence says it is done. It runs locally over stdio via the published package.

People connecting gaming tools to Claude, Cursor, VS Code, or another MCP client. The project is written in C#.

VERIFIED ACTIVE

LAST COMMIT 2026-08-19 · ★ 28 · #4 OF 35 MAINTAINED GAMING · VERIFIED 2026-08-25

Apache-2.0 · C# · how we verify → /methodology

01 · Install Hera Agent Unity

Claude Code

claude mcp add notnull92-hera-agent-unity -- npx -y hera-agent-unity

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "notnull92-hera-agent-unity": {
      "command": "npx",
      "args": [
        "-y",
        "hera-agent-unity"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license Apache-2.0 - declared in the repository

npm package hera-agent-unity - unscoped; check the name against the project README before installing

registry namespace io.github.NotNull92 is GitHub-verified and matches the repo owner

03 · What Hera Agent Unity can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.2.17 · 2026-08-19

Two races no longer report a healthy Editor as broken. The first typed call after a recompile failed with a domain-epoch mismatch: the heartbeat is read before the catalog request and is not written at all while the…

v0.2.16 · 2026-08-18

A Connector that predates a requested action now says so. The CLI and the Unity package ship independently, so a newer CLI can send an action the installed Connector has never declared. That rejection arrived as a…

v0.2.15 · 2026-08-18

--yes answers approval preflights in one invocation. Approval-gated commands returned APPROVAL_REQUIRED on every first call, so a non-interactive shell or CI job needed two round trips even for a read-only smoke run.…

04 · Who maintains Hera Agent Unity

Hera Agent Unity is maintained by notnull92. It's the only MCP server we track from this author; the repo dates to May 2026.

05 · Facts

repository: github.com/notnull92/hera-agent-unity
website: https://github.com/NotNull92/hera-agent-unity
category: gaming - ranked #4 of 35 actively-maintained gaming servers as of 2026-08-25.
release cadence: 10+ releases in the last 90 days (latest 2026-08-19)
registry: io.github.NotNull92/hera-agent-unity (active, first published 2026-08-03 · 9 versions)
packages: npm:hera-agent-unity

06 · Hera Agent Unity FAQ

What is Hera Agent Unity?

Is Hera Agent Unity still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-19 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Hera Agent Unity?

Run `npx -y hera-agent-unity`. You can also paste the ready-made client config above.

Does Hera Agent Unity run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Hera Agent Unity

Alternatives to Hera Agent Unity

Maintained gaming servers if Hera Agent Unity isn't the fit.

More gaming MCP servers · Aseprite Live · Mythx Engine · Godot Lens · Steam (read-only) · Godot MCP (satelliteoflove)