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horizOn MCP server

by ProjectMakersDE·io.github.ProjectMakersDE/horizon-mcp·v1.9.1
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Docs, live API tools and prompts for the horizOn game backend in Godot, Unity and Unreal.

B83/100grade B
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Safety scan
B83/100

not scanned yet

Adoption
Growing

0 stars821 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

horizOn tools

No tool declarations could be read from the package source. They show once the server is installed.

Not scanned yet. New listings are scanned within a day or two of arriving.

How horizOn compares

Against every graded Productivity MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
83/100
higher than 60% of 1,297 Productivity servers
Downloads a week
821
more than 90% of 423 Productivity servers with a package

Release history: 5 versions in the registry since 2026-09-28, latest 2026-10-23, typically one every 8 days.

Install horizOn in Claude Code, Cursor or VS Code

Runs npx -y horizon-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add horizon-mcp -- npx -y horizon-mcp
Add to Cursor

What the publisher says

From the horizOn repository's README, as published. We do not edit it. Read it on GitHub

horizOn MCP Server

MCP server for horizOn Backend-as-a-Service

Gives AI coding assistants documentation, live API tools, and workflow prompts for game and app development.

Quick Install

Add to your MCP client configuration (Claude Desktop, Cursor, etc.):

{
  "mcpServers": {
    "horizOn": {
      "command": "npx",
      "args": ["-y", "horizon-mcp"],
      "env": {
        "HORIZON_API_KEY": "your-api-key-here"
      }
    }
  }
}

Features

Resources (16 docs)

Documentation resources are served directly from the MCP server. No API key required.

Tools (28 tools)

Live API tools that call the horizOn backend. Requires a valid API key.

horizonsubmitscore, horizonsaveclouddata and horizonloadclouddata also need the player's session: sign in first and pass the returned accessToken as sessionToken.

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

horizOn: common questions

Is horizOn MCP server safe?
Mostly: it is graded B (83/100). Read the horizOn safety report
How do I install horizOn?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does horizOn need an API key?
Yes. The registry entry asks for HORIZON_API_KEY, HORIZON_ACCOUNT_API_KEY.
Is horizOn maintained?
The last commit was 32 days ago (2026-10-01). The latest release is v1.9.1.
What can I use instead of horizOn?
Servers from other publishers that do the same job: Mdma MCP server, Context7 MCP server and Svelte MCP server.
How does horizOn compare with other Productivity MCP servers?
safety score 83/100 (higher than 60% of 1,297 Productivity servers); downloads a week 821 (more than 90% of 423 Productivity servers with a package). Full comparison.

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