How to Use the Calendarific MCP in Claude Code

Q: How do I add Calendarific to Claude Code?

Run claude mcp add --transport http calendarific-mcp -- in your terminal. This command registers the server in your /.claude.json configuration file.

Pipe global holiday data into your terminal workflows and shell scripts using Claude Code.

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Connect Calendarific MCP to Claude Code

Create your Vinkius account to connect Calendarific 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 with Claude Code

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Terminal-Based Holiday Pipelines via MCP Server

This MCP Server exposes `list_holidays` to your command line, letting Claude Code feed live holiday data directly into shell scripts. You can pipe the terminal output into cron jobs or deployment scripts to prevent automated production releases on national holidays. Claude Code runs the tool, formats the output as clean JSON, and lets you grep or redirect the holiday lists to other terminal utilities. It makes scheduling server maintenance windows completely scriptable from your terminal.

Automated CI/CD Release Checking

The `list_holidays_by_location` tool allows Claude Code to verify regional blackouts during automated deployment runs. You can run Claude Code in a headless environment to check if a target deployment region is celebrating a holiday before kicking off an update. By querying `list_holidays_by_type`, the agent filters out non-working days in specific target countries. It can automatically exit the deployment script with a warning if it detects a critical regional holiday, preventing unsupported releases.

Command-Line Account Management

The `get_account_info` tool gives Claude Code immediate access to your API integration status from the terminal. You can check your remaining query limits and account tier without opening a browser or logging into a dashboard. If your automated scripts start failing, Claude Code runs this tool to verify if your API limits are exhausted. It prints the status directly to your terminal, helping you debug connection issues in seconds.

Setup guide

Set up Calendarific 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-mcp with a green status indicator.
3

Start using tools

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

Terminal

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

Get your connection token →

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 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-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 MCP in Claude Code

Run `claude mcp add --transport http calendarific-mcp -- ` in your terminal. This command registers the server in your `~/.claude.json` configuration file.

Yes, Claude Code can invoke the holiday tools headlessly inside your CI/CD runners. It uses the HTTP transport configuration to communicate with the MCP server on Vinkius without needing a GUI.

You just ask Claude Code to list the countries. The agent will run `list_supported_countries` behind the scenes and print the ISO codes directly to your terminal output.

No, Claude Code queries the live Vinkius endpoint each time you request holiday data. This ensures your shell scripts always use the most up-to-date calendar schedules.

The command-line agent only transmits the requested country ISO codes, years, and regional parameters to the Vinkius sandbox. Your local terminal history, environment variables, and shell scripts are never sent to the holiday API.

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