How do I find my Holiday API Key?

Log in to your [**Holiday API dashboard**](https://holidayapi.com/dashboard), and you will find your API Key on the main page. Copy and paste it below.

Does the agent support historical years?

Yes. Holiday API provides historical data. Depending on your plan, you can query holidays for past years to audit previous events.

Can the agent calculate the number of workdays?

Yes. The `get_workdays_count` tool allows your agent to calculate the exact number of non-holiday business days between two dates for any country.

Holiday API MCP Server for VS Code Copilot 5 tools — connect in under 2 minutes

Name: Holiday API
Availability: InStock
Author: Vinkius

code.visualstudio.com/docs/copilot/chat/mcp-servers

Built by Vinkius GDPR 5 Tools IDE

GitHub Copilot in VS Code is the most widely adopted AI coding assistant, embedded directly into the world's most popular code editor. With MCP support in Agent mode, Copilot can access external data and APIs to generate context-aware code grounded in real-time information.

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Classic Setup·json

{
  "mcpServers": {
    "holiday-api": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Holiday API MCP Server

Empower your AI agent to orchestrate your entire global event and holiday research workflow with Holiday API, the reliable source for holiday data. By connecting Holiday API to your agent, you transform complex calendar auditing into a natural conversation. Your agent can instantly retrieve public holidays for any country, audit workday counts, and identify supported languages without you ever touching a manual calendar. Whether you are planning international logistics or managing global payroll, your agent acts as a real-time event consultant, ensuring your schedules are always accurate and compliant.

GitHub Copilot Agent mode brings Holiday API data directly into your VS Code workflow. With a project-scoped config, the entire team shares access to 5 tools. Copilot queries live data, generates typed code, and writes tests from actual API responses, all without leaving the editor.

What you can do

Holiday Auditing — Retrieve public and federal holidays for over 200 countries and retrieve detailed metadata, including names and dates.
Workday Oversight — Calculate the next workday or count workdays between two dates to maintain a clear view of operational periods.
Global Discovery — List all supported countries and languages in the Holiday API catalog to identify regional event markers.
Temporal Intelligence — Query holidays for specific years to audit past and future global events instantly.
Usage Monitoring — Get real-time API usage and status metadata to maintain strict control over your research volume.

The Holiday API MCP Server exposes 5 tools through the Vinkius. Connect it to VS Code Copilot in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Holiday API to VS Code Copilot via MCP

Follow these steps to integrate the Holiday API MCP Server with VS Code Copilot.

Create MCP config

Create a .vscode/mcp.json file in your project root

Add the server config

Paste the JSON configuration above

Enable Agent mode

Open GitHub Copilot Chat and switch to Agent mode using the dropdown

Start using Holiday API

Ask Copilot: "Using Holiday API, help me...". 5 tools available

Why Use VS Code Copilot with the Holiday API MCP Server

GitHub Copilot for Visual Studio Code provides unique advantages when paired with Holiday API through the Model Context Protocol.

VS Code is used by over 70% of developers. adding MCP tools to Copilot means your team can leverage external data without leaving their primary editor

Project-scoped MCP configs (`.vscode/mcp.json`) let you commit server configurations to your repository, ensuring the entire team shares the same tool access

Copilot's Agent mode integrates MCP tools seamlessly with file editing, terminal commands, and workspace search in a single agentic loop

GitHub's enterprise compliance and audit features extend to MCP tool usage, providing visibility into how AI interacts with external services

Holiday API + VS Code Copilot Use Cases

Practical scenarios where VS Code Copilot combined with the Holiday API MCP Server delivers measurable value.

Live API integration: Copilot can query an MCP server, inspect the response schema, and generate typed API client code in the same step

DevSecOps workflows: security teams can give developers access to domain intelligence tools directly in their editor for real-time vulnerability assessment during code review

Data pipeline development: Copilot fetches sample data via MCP and generates transformation scripts, validators, and test fixtures from actual API responses

Documentation generation: Copilot queries available tools and auto-generates README sections, API reference docs, and usage examples

Holiday API MCP Tools for VS Code Copilot (5)

These 5 tools become available when you connect Holiday API to VS Code Copilot via MCP:

get_holidays

Get public holidays for a country and year

get_next_workday

Get the date after a number of workdays from a start date

get_workdays_count

Count the number of workdays between two dates

list_supported_countries

List all countries supported by Holiday API

list_supported_languages

List all languages supported by Holiday API

Example Prompts for Holiday API in VS Code Copilot

Ready-to-use prompts you can give your VS Code Copilot agent to start working with Holiday API immediately.

"What are the public holidays in 'US' for 2024 using Holiday API?"

"Calculate the next 10 workdays from 2024-01-01 in Brazil."

"List all countries supported by Holiday API."

Troubleshooting Holiday API MCP Server with VS Code Copilot

Common issues when connecting Holiday API to VS Code Copilot through the Vinkius, and how to resolve them.

MCP tools not available

Ensure you are in Agent mode in Copilot Chat. MCP tools only appear in Agent mode.

Holiday API + VS Code Copilot FAQ

Common questions about integrating Holiday API MCP Server with VS Code Copilot.

Which VS Code version supports MCP?

MCP support requires VS Code 1.99 or later with the GitHub Copilot extension. Ensure both are updated to the latest version. Older versions of Copilot may not expose the Agent mode toggle.

How do I switch to Agent mode?

Open the Copilot Chat panel and look for two mode options: "Ask" and "Agent". Click "Agent" to enable autonomous tool calling. In Ask mode, Copilot provides conversational answers but cannot invoke MCP tools.

Can I restrict which MCP tools Copilot can access?

Yes. VS Code shows a tool consent dialog before any MCP tool is invoked for the first time. You can also configure tool access policies at the organization level through GitHub Copilot settings.

Does MCP work in VS Code Remote or Codespaces?

Yes. MCP servers configured via .vscode/mcp.json work in Remote SSH, WSL, and GitHub Codespaces environments. The MCP connection is established from the remote host, so ensure the server URL is accessible from that environment.