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mcp/harbor
Grok

holidays mcp for Grok

io.github.mrfentmen/holidays-mcp

Nager and Open Holidays public holidays.

client:Grok transport:stdio runtime:npm

Install holidays mcp in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "holidays-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "holidays-mcp"
      ]
    }
  }
}

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

holidays mcp in other clients

holidays mcp MCP server