How to Use the Calendarific Alternative MCP in Claude Code

Q: How do I add Calendarific Alternative to Claude Code?

Run the MCP command to add the server: claude mcp add --transport http calendarific-alternative-mcp -- . This command updates your local /.claude.json configuration file automatically.

Q: How do I find which countries are supported?

Ask the agent to run listsupportedcountries. It will output a list of supported nations and their codes directly in your terminal window.

Run terminal commands to pull global holiday intelligence directly into your shell with Claude Code.

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Connect Calendarific Alternative MCP to Claude Code

Create your Vinkius account to connect Calendarific Alternative to Claude Code and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Calendarific Alternative with Claude Code

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Pipe holiday data directly into terminal workflows

The `get_holidays` tool lets Claude Code retrieve clean JSON payloads of global schedules directly from your CLI. You can pipe the outputs into other CLI tools or save them to disk. This makes it easy to generate quick reports or check dates during an active SSH session. You get raw, structured data without dealing with browser UIs or heavy calendar apps.

Build automated shell scripts using this MCP Server

The `list_supported_countries` tool helps Claude Code validate inputs before writing automated bash scripts. The agent checks country codes to avoid runtime errors. It writes the logic, tests the outputs of `get_holidays`, and saves the runnable script to your bin folder. You get a working terminal tool built purely from natural language.

Check release windows from the command line

Calling `get_holidays` lets Claude Code scan for upcoming bank holidays in your deployment regions. This keeps you from launching updates when your operations team is offline. The agent checks the dates, warns you of any overlaps, and helps you adjust your crontabs or deployment schedules right from the shell.

Setup guide

Set up Calendarific Alternative MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see calendarific-alternative-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest Calendarific Alternative transactions." It will automatically discover and invoke the available Calendarific Alternative tools.

Terminal

claude mcp add --transport http calendarific-alternative-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

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Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the Calendarific Alternative MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "calendarific-alternative-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Calendarific. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Calendarific Alternative MCP in Claude Code

Run the MCP command to add the server: `claude mcp add --transport http calendarific-alternative-mcp -- `. This command updates your local `~/.claude.json` configuration file automatically.

Yes, Claude Code runs perfectly in headless environments. You can trigger the agent in your pipelines to check `get_holidays` and block deployments on days when regional teams are off.

While curl gives you raw text, this server lets Claude Code understand the data structure natively through the MCP standard. The agent can immediately parse, filter, and act on the holiday lists without you writing grep or jq filters.

Ask the agent to run `list_supported_countries`. It will output a list of supported nations and their codes directly in your terminal window.

Yes. Only the country codes and years you query are processed to retrieve the holiday lists. The MCP Server runs inside a zero-trust, ephemeral sandbox, so your terminal commands and internal network configurations are never exposed.

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