Databutler Calendar

io.github.physics-star-catv1.0.0Updated Oct 4, 2026

Public holidays (UK, US, DE, FR), tax-year dates and DST switches for 2026-2028.

VerifiedStreamable HTTPWeb executableProductivity & Workflow

Overview

AI-generated overview

A remote MCP server that gives an assistant public holiday, tax-year and daylight-saving dates for the UK, US, Germany and France.

What it does
Databutler Calendar is a hosted MCP endpoint that supplies calendar reference data. According to its registry description, it covers public holidays for the UK, US, Germany and France, tax-year dates, and daylight-saving time switches for the years 2026 to 2028. No individual tools are listed in the manifest, so the exact tool names and parameters are not documented here.
When to use it
Worth adding when an assistant needs to reason about holidays, tax-year boundaries or DST changes in those four countries, for example when scheduling, planning deadlines, or checking whether a date is a working day. It is a narrow reference source rather than a general calendar or scheduling service.
Requirements
A remote streamable HTTP endpoint at databutler.dev; no packages, environment variables or headers are declared, and no authentication is declared. Network access to that endpoint is required.
Before you install
The manifest declares no authentication, so no credentials are requested. The data is limited to the four listed countries and the 2026-2028 range, and no tool list is published, so verify coverage and behaviour before relying on it for anything consequential.

Installation

In SourceWeft

  1. Open Databutler Calendar in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "databutler-calendar": {
      "type": "http",
      "url": "https://databutler.dev/api/mcp/calendar"
    }
  }
}

README

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Tools

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Version history

1
  1. v1.0.0LatestOct 4, 2026