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horizOn

io.github.ProjectMakersDE/horizon-mcp ยท v1.9.1

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

Website Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add horizon-mcp -e HORIZON_API_KEY=<HORIZON_API_KEY> -e HORIZON_ACCOUNT_API_KEY=<HORIZON_ACCOUNT_API_KEY> -e HORIZON_BASE_URL=<HORIZON_BASE_URL> -- npx -y [email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "horizon-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "HORIZON_API_KEY": "<HORIZON_API_KEY>",
        "HORIZON_ACCOUNT_API_KEY": "<HORIZON_ACCOUNT_API_KEY>",
        "HORIZON_BASE_URL": "<HORIZON_BASE_URL>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "horizon-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "HORIZON_API_KEY": "<HORIZON_API_KEY>",
        "HORIZON_ACCOUNT_API_KEY": "<HORIZON_ACCOUNT_API_KEY>",
        "HORIZON_BASE_URL": "<HORIZON_BASE_URL>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "horizon-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "HORIZON_API_KEY": "<HORIZON_API_KEY>",
        "HORIZON_ACCOUNT_API_KEY": "<HORIZON_ACCOUNT_API_KEY>",
        "HORIZON_BASE_URL": "<HORIZON_BASE_URL>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
HORIZON_API_KEY
Optional, secret		horizOn project API key for the live API tools. The documentation works without it.
HORIZON_ACCOUNT_API_KEY
Optional, secret		horizOn account key for the dashboard admin tools.
HORIZON_BASE_URL
Optional		API base URL.

Details

Package[email protected] (NPM, stdio)
First published23 Oct 2026
Last updated23 Oct 2026
Registry nameio.github.ProjectMakersDE/horizon-mcp

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