How many countries are covered by this MCP?

The MCP provides access to holiday data for over 200 countries.

Can I use this with Claude or Cursor?

Yes, you can use this MCP with Claude, Cursor, Windsurf, VS Code, or any other MCP-compatible client.

Does this MCP handle workday calculations?

Yes, your agent can count workdays between two dates or find the date after a specific number of workdays.

What do I need to get started?

You need a subscription to the MCP on Vinkius and a valid Holiday API Key.

Can I check for holidays in specific years?

Yes, you can query the API for holidays in specific years to audit past or future events.

How do I find my Holiday API Key?

Log in to your Holiday API 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 capability allows your agent to calculate the exact number of non-holiday business days between two dates for any country.

An astronaut overseeing a futuristic data hub

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Connect Holiday API to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Get accurate holiday data and workday counts through your AI agent.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 5 capabilities

We ship only the actions that matter.

Capability set01 / 02

01-03

3 capabilities in this set.

Part of 5 available through Holiday API.

01
List supported languages
Shows all languages supported by the API for holiday data.
02
Get holidays
Retrieves a list of public holidays for a specific country and year.
03
Get next workday
Calculates the date that falls after a set number of workdays from a starting point.

Capability set02 / 02

04-05

2 capabilities in this set.

Part of 5 available through Holiday API.

04
Get workdays count
Counts the total number of workdays between two specific dates.
05
List supported countries
Provides a list of all countries available in the Holiday API catalog.

Real work

What teams actually run

Payroll Auditing

An HR specialist uses the agent to ensure payroll cycles align with regional holidays.

Supply Chain Planning

A logistics manager checks for upcoming holidays in a shipping destination to avoid delays.

Project Scheduling

An operations lead calculates workdays to set realistic deadlines for a global team.

Travel Coordination

A planner identifies local holidays to avoid booking travel during peak regional closures.

Automate a task

Put Holiday API to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

Holiday API works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put Holiday API to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

870ms average. Fast in production.

Holiday API is checked daily against the live service.

Daily averagePeak 1089ms

Oct 3Today

Fastest day: 661ms
Slowest day: 1089ms
14-day trend: Slowing+15%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 5 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Holiday API, so you can see the experience inside your AI.

It does not authenticate your account with Holiday API. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Holiday API Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_SMxFPybnCSX99kH0d7ecnowVLqRi196StERNKHpz/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Holiday API capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "holiday-api-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_SMxFPybnCSX99kH0d7ecnowVLqRi196StERNKHpz/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Holiday API in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Holiday API owners hand off.

This MCP is built for professionals managing operations, people, or logistics across international borders.

01
Logistics Managers
They hand off the task of monitoring international holiday schedules to their agent.
02
HR Specialists
They use the agent to verify global holidays and audit payroll cycles.
03
Travel Planners
They delegate regional event audits and peak holiday identification to their agent.
04
Operations Leads
They automate holiday data queries to coordinate global teams.

FAQ

Questions Holiday API owners ask.

01
How many countries are covered by this MCP?
The MCP provides access to holiday data for over 200 countries.
02
Can I use this with Claude or Cursor?
Yes, you can use this MCP with Claude, Cursor, Windsurf, VS Code, or any other MCP-compatible client.
03
Does this MCP handle workday calculations?
Yes, your agent can count workdays between two dates or find the date after a specific number of workdays.
04
What do I need to get started?
You need a subscription to the MCP on Vinkius and a valid Holiday API Key.
05
Can I check for holidays in specific years?
Yes, you can query the API for holidays in specific years to audit past or future events.
06
How do I find my Holiday API Key?
Log in to your Holiday API dashboard, and you will find your API Key on the main page. Copy and paste it below.
07
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.
08
Can the agent calculate the number of workdays?
Yes. The get_workdays_count capability allows your agent to calculate the exact number of non-holiday business days between two dates for any country.

Explore

More in Productivity

Connect Holiday API to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

List supported languages

Get holidays

Get next workday

04-05

Get workdays count

List supported countries

What teams actually run

Payroll Auditing

Supply Chain Planning

Project Scheduling

Travel Coordination

Building your own app? The connector is yours to use.

Holiday API Connector

Claude Desktop

Logistics Managers

HR Specialists

Travel Planners

Operations Leads

How many countries are covered by this MCP?

Can I use this with Claude or Cursor?

Does this MCP handle workday calculations?

What do I need to get started?

Can I check for holidays in specific years?

How do I find my Holiday API Key?

Does the agent support historical years?

Can the agent calculate the number of workdays?

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