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Holidays MCP

by Lulu-The-Narwhal · remote · no sign-in to list tools · v0.1.1 · published by GitHub user Lulu-The-Narwhal

Free, keyless public holidays lookup for any country and year, plus single-date holiday checks.

Changes · 1
CompareRegistry entry

2 tools: 1 change things and 1 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http holidays https://ads.getlulu.dev/holidays/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Changes things 1Claude Code: ask
  • is_public_holidayChecks whether one specific date is a public holiday in a country, and names it if so.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Checks whether one specific date is a public holiday in a country, and names it if so. Use for "is Dec 25 2026 a holiday in the US", "is the office closed on this date", or any single-date holiday check -- prefer this over `get_public_holidays` when the question is about just one day. `country_code` is a 2-letter ISO code; `date` is YYYY-MM-DD. Returns whether it's a holiday and, if so, its name.

    Annotations the server declares

    • readOnlyHint: true
Only reads 1Claude Code: allow
  • get_public_holidaysFull list of official public holidays for a country in a given year.No findings

    Why it is in this group

    • The name "get_public_holidays" says "get": a word for reading.
    Description, as the server wrote it
    Full list of official public holidays for a country in a given year. Use for "what are the holidays in Germany in 2026", planning around a country's holiday calendar, or any "list the holidays for X" question. `country_code` is a 2-letter ISO code (US, GB, DE, FR, JP, ...) -- roughly 100 countries are covered, not every country worldwide. Returns each holiday's date, local name, English name, and type (e.g. Public, Bank, Observance).

    Annotations the server declares

    • readOnlyHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.1.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http holidays https://ads.getlulu.dev/holidays/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__holidays__get_public_holidays"
    ],
    "ask": [
      "mcp__holidays__is_public_holiday"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as holidays. Review it before you use it.