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World Business Calendar

Public holidays and working-day math for 200+ countries and regions, local weekends. No keys.

MCP server · by groove79

About

World Business Calendar is an MCP server published by groove79. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-23 and have recorded no change since. As of our marketplace pass on 2026-10-25.

What it asks for

  • Runs on your machine

None of the marketplaces we read publishes its tools or the settings it asks for.

What it declares, asks for and runs, in full

Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.

Works with

  • Claude Code
  • Codex
  • Cursor
  • VS Code
  • Copilot CLI

A one-click link opens the client, which asks you to confirm before it adds the server.

From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.

Connect

Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.

As a local MCP server: npm package

Built from what Official MCP Registry declares.

Claude CodeTerminal
claude mcp add --transport stdio mcp-world-calendar -- npx -y @appmonster/mcp-world-calendar
Codex~/.codex/config.toml
[mcp_servers.mcp-world-calendar]
command = "npx"
args = ["-y", "@appmonster/mcp-world-calendar"]
Cursor~/.cursor/mcp.json
{
  "mcpServers": {
    "mcp-world-calendar": {
      "command": "npx",
      "args": [
        "-y",
        "@appmonster/mcp-world-calendar"
      ]
    }
  }
}

Where it is published

MarketplaceStatusVersionFiguresVerifiedFirst seen
Official MCP Registry (Open the registry record) Listed 0.1.0 Forks (GitHub): 0
Stars (GitHub): 0
Not marked

Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.

What changed

  1. Became a product we track
  2. Official MCP Registry: appeared

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Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.

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Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.

Where the data comes from: how the catalog is built