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mcp/harbor
Grok

Joinable for Grok

com.getjoinable/joinable

Make any game joinable: pick the pattern, get the snippet, run a two-player self-test.

client:Grok transport:stdio runtime:npm

Install Joinable in Grok

.mcp.json (in your project root)

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "joinable": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "getjoinable"
      ],
      "env": {
        "JOINABLE_RELAY": "<JOINABLE_RELAY>"
      }
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

Joinable in other clients

Joinable MCP server