horizOn

io.github.ProjectMakersDE/horizon-mcp

Docs, live API tools and prompts for the horizOn game backend in Godot, Unity and Unreal.

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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": {
    "horizon-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "horizon-mcp@1.9.1"
      ],
      "env": {
        "HORIZON_API_KEY": "<your HORIZON_API_KEY>",
        "HORIZON_ACCOUNT_API_KEY": "<your HORIZON_ACCOUNT_API_KEY>",
        "HORIZON_BASE_URL": "https://horizon.pm"
      }
    }
  }
}
Environment variables
  • HORIZON_API_KEYsecrethorizOn project API key for the live API tools. The documentation works without it.
  • HORIZON_ACCOUNT_API_KEYsecrethorizOn account key for the dashboard admin tools.
  • HORIZON_BASE_URLAPI base URL.

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

Category
Developer Tools
Version
1.9.1
Registry
active
Published
10/23/2026

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Add the badge to your site

Show visitors that horizOn is listed here — it’s also the link we check for a free listing.

horizOn — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-projectmakersde-horizon-mcp?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="horizOn — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![horizOn — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-projectmakersde-horizon-mcp?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.