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Zed Holiday Calendar count_business_days

How to: Zed Holiday Calendar count_business_days

client:Zed transport:streamable-http tool:count_business_days

Add Holiday Calendar to Zed

  1. 01

    Open ~/.config/zed/settings.json and merge this in. Keep any servers already there.

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

    Save the file and restart Zed.

  2. 03

    Ask for something count_business_days does. Zed lists the server's tools on connect and calls count_business_days 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.

Merge this into your existing settings object — do not replace the file. Zed 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.