Calendarific Alternative MCP. Schedule or plan around any global holiday.
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Calendarific Alternative MCP Server gives your AI agent global holiday intelligence. It fetches public, bank, and religious holidays for any country and year.
Use it to check regional availability, schedule international meetings, or plan e-commerce campaigns across 200+ countries, all through natural conversation.
What your AI agents can do
Get holidays
Fetches a list of public and bank holidays for a specified country and year.
List supported countries
Returns a list of all countries and regions supported by the calendar.
The tool retrieves a list of public and bank holidays for a specified country and year.
The tool returns a list of all countries and regions supported by the calendar.
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Supported MCP Clients
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Calendarific Alternative MCP Server: 2 Tools for Global Holiday Data
These two tools let your agent retrieve global holiday lists and list all supported countries. Use them to validate dates for any cross-border project.
019d8422get holidays
Fetches a list of public and bank holidays for a specified country and year.
019d8422list supported countries
Returns a list of all countries and regions supported by the calendar.
Choose How to Get Started
Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.
Build Your Own
Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.
- Import from OpenAPI, Swagger, or YAML specs
- Create Agent Skills with progressive disclosure
- Deploy to edge with MCPFusion framework
- Built in DLP, auth, and compliance on every call
- Real time usage dashboard and cost metering
- Publish to catalog or keep private
Make Your AI Do More
Start with Calendarific Alternative, then connect any of our 4,700+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 4,700+ others, all in one place
- Add new capabilities to your AI anytime you want
- Every connection is secured and compliant automatically
- Track usage and costs across all your servers
- Works with Claude, ChatGPT, Cursor, and more
- New servers added to the catalog every week
What you can do with this MCP connector
Your AI agent pulls global holiday intelligence from this server. It handles public, bank, and religious holidays for over 200 countries.
get_holidays fetches a list of public and bank holidays for a country and year. You can check regional availability or schedule meetings across any region.
list_supported_countries returns a list of all countries and regions supported by the calendar. You'll know exactly which markets your agent can pull holiday data for.
How Calendarific Alternative MCP Works
- 1 Subscribe to the server and enter your Calendarific API Key.
- 2 Your AI client queries the server using a natural language prompt.
- 3 The agent executes the appropriate tool (e.g.,
get_holidays) and returns the list of holidays.
The bottom line is, your agent acts as a dedicated global calendar coordinator, pulling holiday data without you writing any code.
Who Is Calendarific Alternative MCP For?
Anyone who plans across borders needs this. Project Managers coordinating international teams, Travel Planners setting itineraries, and Operations Engineers running regional availability checks all rely on accurate, localized date data. This server stops you from scheduling meetings on a local holiday.
Uses the get_holidays tool to check if a milestone date falls on a public holiday in a country's time zone, preventing project delays.
Uses the server to confirm local bank holidays and festivals in a destination country, adjusting travel dates accordingly.
Uses the tool to map out marketing campaign windows, ensuring campaigns launch before or after major regional or religious holidays.
What Changes When You Connect
- Stops scheduling conflicts. Instead of guessing, your agent uses
get_holidaysto confirm if a date is a public or bank holiday in a specific country. This prevents missed deadlines and failed international rollouts. - Know your market. Use
list_supported_countriesto get a definitive list of all 200+ supported regions and their ISO codes. This is necessary before writing any cross-border business logic. - Saves time on research. You don't need to manually look up country-specific holiday rules. The server handles the complexity, giving you immediate, structured data for any country and year.
- Coordinated planning. The system allows your agent to summarize and compare holiday calendars between different countries, making multi-market strategy planning straightforward.
- Handles complexity. It doesn't just list dates. It provides metadata, letting you know if a holiday is religious, national, or bank-related. This level of detail is crucial for accurate marketing and operations.
- Directly actionable. The results aren't raw data dumps. Your agent reads the list and answers in plain language, telling you exactly which holidays fall in the target month.
Real-World Use Cases
Launching a Product in a New Market
A Product Manager needs to set a launch date for Country X. Instead of calling three different regional contacts, they ask their agent: 'What are the holidays in Country X for Q3 2025?' The agent uses get_holidays and returns the list, showing the PM exactly when the market is closed, allowing the PM to select the best available launch window.
Coordinating an International Conference
An event organizer is planning a global summit. They ask the agent to compare the calendars for the US, UK, and Japan. The agent uses get_holidays multiple times and compiles a summary, showing the organizer which countries are available for a common meeting date, solving complex scheduling conflicts.
Checking Travel Viability
A travel agent plans a multi-country tour. They ask the agent to check for any holidays in the destination countries for the entire month of October. The agent uses get_holidays to filter the dates, confirming that the planned itinerary avoids all major bank and public holidays.
Auditing Campaign Timing
An e-commerce team needs to schedule a big sale. They ask the agent to list all supported countries and then check the holidays for the top 5 markets. The agent first uses list_supported_countries, then uses get_holidays for each, ensuring the sale date avoids all regional and religious closures.
The Tradeoffs
Hardcoding country lists
A developer assumes they only need to check the US, UK, and Canada, and writes code that only calls the API for those three. This fails the moment the client expands to Mexico or Australia.
→
Always start by calling the list_supported_countries tool. This gives your client a complete, up-to-date list of all 200+ supported regions, ensuring your logic doesn't break when you add a new market.
Ignoring holiday types
A marketing team schedules an email blast on a national holiday, assuming it's fine, only to find out later it was a religious day the local population ignores. The message fails to connect.
→
When using get_holidays, always check the metadata returned. The tool specifies the type (religious, national, etc.). Use this detail to understand the nature of the closure, not just the fact that it exists.
Using outdated APIs
The application relies on a cached version of the holiday data from six months ago. The client launches the campaign, but the server fails to recognize a newly added local bank holiday.
→
Because this is an MCP Server, your agent calls the current, live data source. When you query with get_holidays, you get the absolute latest holiday data, eliminating stale cache issues.
When It Fits, When It Doesn't
Use this server if your logic depends on accurate, global temporal context. Specifically, if you need to know if a date is a public holiday, bank holiday, or religious holiday for a country other than your own. Use get_holidays for the specific dates and list_supported_countries to define your scope. Don't use this if you just need to calculate date ranges based on weekdays (use a standard calendar library) or if you only care about a single, fixed country that never changes. This tool is for dynamic, global, and verifiable date checking.
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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Works with Claude, ChatGPT, Cursor, and more
The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.
This server provides 2 capabilities that interface natively with Claude, ChatGPT, Cursor, and any MCP client. No middleware. No custom integration required.
Available Capabilities
Planning international operations shouldn't feel like cross-referencing five different country websites.
Before this server, setting a timeline for a multi-national project meant manual deep dives. You'd check the US holiday calendar, then Google the UK bank holidays, then cross-reference the religious holidays for Japan. You'd spend hours copying and pasting dates, manually comparing calendars to find a window where everyone was working.
Now, you ask your agent, 'What dates in Q2 2025 are clear for all three countries?' The server uses `get_holidays` to run the checks and gives you a single, clear list of available dates. You just get the answer.
Calendarific Alternative MCP Server: Get Global Holiday Data
Manual date checking means constantly switching tabs and using different APIs just to validate a single date. You're fighting data silos and versioning conflicts every time you update a country list.
With this server, your AI client talks to one endpoint. It runs the `get_holidays` tool and returns the structured data. You get a single, reliable source of truth for global dates.
Common Questions About Calendarific Alternative MCP
How do I use the `get_holidays` tool with a country and year? +
You simply tell your agent the country and the year you need. The agent handles the parameters. You don't need to know the ISO codes; just ask for 'UK holidays in 2025,' and it works.
What countries does the `list_supported_countries` tool cover? +
The list_supported_countries tool covers over 200 countries and regions. It returns the full ISO code and name, so you can use the list for your application's validation.
Is this server just for bank holidays, or can it handle religious days? +
No, it handles all three: public, bank, and religious holidays. The metadata returned by get_holidays specifies the exact type of holiday, giving you full context.
Can I check if a specific date is a holiday using the Calendarific Alternative MCP Server? +
Yes. You ask your agent to check a date, and the server runs the necessary checks against the global calendar data to tell you if it's a holiday or not.
What happens if I try to use `get_holidays` with an invalid ISO code? +
The server returns a specific error code detailing the invalid country or year. Your AI client catches this error, allowing you to retry with corrected parameters.
Do I need special permissions or API keys for `list_supported_countries`? +
No, list_supported_countries is a read-only operation and does not require an API key. It only needs the standard connection credentials for the Vinkius Marketplace.
Does the `get_holidays` tool handle historical data for years before 2000? +
Yes, the tool accesses a comprehensive database and can fetch holiday records for years extending back into the 20th century.
How does the Calendarific Alternative MCP Server handle data for multiple countries simultaneously? +
You must call get_holidays for each country individually. However, your AI client can automate this process, making it appear as a single, coordinated request.
Can I see all holidays in Brazil for 2024? +
Yes! Use the get_holidays tool with the country 'BR' and the year 2024. It will return a full list of public and bank holidays.
How do I find the ISO code for a country? +
Use the get_countries tool. It returns a comprehensive list of all supported countries along with their 2-letter ISO codes (e.g., 'US', 'FR', 'JP').
Does this include religious holidays like Easter? +
Yes. Calendarific tracks national, bank, and religious holidays. You can identify the type of holiday in the metadata returned by the tools.
Use it with your favorite AI tools
Connect this server to Cursor, Claude, VS Code, and more.
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