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mcp/harbor

Windsurf Holiday Calendar next_federal_holidays

How to: Windsurf Holiday Calendar next_federal_holidays

client:Windsurf transport:streamable-http tool:next_federal_holidays

Add Holiday Calendar to Windsurf

  1. 01

    Open ~/.codeium/windsurf/mcp_config.json and merge this in. Keep any servers already there. 

{
  "mcpServers": {
    "holiday-calendar": {
      "serverUrl": "https://starter.modernmustardseed.com/holidays"
    }
  }
}
  1. 02

    Save the file and restart Windsurf.

  2. 03

    Ask for something next_federal_holidays does. Windsurf lists the server's tools on connect and calls next_federal_holidays itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that Holiday Calendar's identifier in your config matches the one above exactly.

Global only — Windsurf has no per-project MCP config. Refresh Cascade after saving. Windsurf docs

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 12 October 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.

Holiday Calendar MCP server