How do I list all the holidays for a specific country in 2024?

Simply ask the agent to `list_holidays` and provide the Country code (e.g., 'US' or 'BR') and the year '2024'. It will retrieve the full list from Calendarific.

Can I filter holidays by type, like only religious holidays?

Yes! Use the `list_holidays_by_type` tool and provide the country, year, and type (e.g., 'religious'). Your agent will return only the matching observances.

How do I see which countries are supported by Calendarific?

Use the `list_supported_countries` tool. It will retrieve the complete directory of over 230 countries currently available in the Calendarific API.

Calendarific MCP Server for OpenAI Agents SDK 6 tools — connect in under 2 minutes

Name: Calendarific
Availability: InStock
Author: Vinkius

openai.github.io/openai-agents-python/mcp

Built by Vinkius GDPR 6 Tools SDK

The OpenAI Agents SDK enables production-grade agent workflows in Python. Connect Calendarific through Vinkius and your agents gain typed, auto-discovered tools with built-in guardrails. no manual schema definitions required.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerStreamableHttp

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with MCPServerStreamableHttp(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as mcp_server:

        agent = Agent(
            name="Calendarific Assistant",
            instructions=(
                "You help users interact with Calendarific. "
                "You have access to 6 tools."
            ),
            mcp_servers=[mcp_server],
        )

        result = await Runner.run(
            agent, "List all available tools from Calendarific"
        )
        print(result.final_output)

asyncio.run(main())

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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 Calendarific MCP Server

Connect your Calendarific account to any AI agent and orchestrate your global scheduling, vacation planning, and local observability through natural conversation.

The OpenAI Agents SDK auto-discovers all 6 tools from Calendarific through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries Calendarific, another analyzes results, and a third generates reports, all orchestrated through Vinkius.

What you can do

Holiday Oversight — List all public, religious, and local holidays for a specific country and year.
Regional Observability — Filter holidays by state or region to ensure your planning accounts for local variations.
Categorized Discovery — List holidays by type, such as National, Observance, or Religious holidays.
Country & Language Directory — Access the list of 230+ supported countries and their respective ISO codes.
Date-Specific Queries — Retrieve holidays for a specific month or day to verify work availability.
Reference Data — Get detailed metadata for each holiday, including descriptions and observance regions.

The Calendarific MCP Server exposes 6 tools through the Vinkius. Connect it to OpenAI Agents SDK 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 Calendarific to OpenAI Agents SDK via MCP

Follow these steps to integrate the Calendarific MCP Server with OpenAI Agents SDK.

Install the SDK

Run pip install openai-agents in your Python environment

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token from cloud.vinkius.com

Run the script

Save the code above and run it: python agent.py

Explore tools

The agent will automatically discover 6 tools from Calendarific

Why Use OpenAI Agents SDK with the Calendarific MCP Server

OpenAI Agents SDK provides unique advantages when paired with Calendarific through the Model Context Protocol.

Native MCP integration via `MCPServerSse`, pass the URL and the SDK auto-discovers all tools with full type safety

Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure

Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate

First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output

Calendarific + OpenAI Agents SDK Use Cases

Practical scenarios where OpenAI Agents SDK combined with the Calendarific MCP Server delivers measurable value.

Automated workflows: build agents that query Calendarific, process the data, and trigger follow-up actions autonomously

Multi-agent orchestration: create specialist agents. one queries Calendarific, another analyzes results, a third generates reports

Data enrichment pipelines: stream data through Calendarific tools and transform it with OpenAI models in a single async loop

Customer support bots: agents query Calendarific to resolve tickets, look up records, and update statuses without human intervention

Calendarific MCP Tools for OpenAI Agents SDK (6)

These 6 tools become available when you connect Calendarific to OpenAI Agents SDK via MCP:

get_account_info

Check the status of the integration

list_holidays

List holidays for a specific country and year

list_holidays_by_location

List holidays for a specific state or region

list_holidays_by_type

List holidays filtered by type (e.g. national, religious)

list_supported_countries

List all supported countries and their ISO codes

list_supported_languages

List all supported languages

Example Prompts for Calendarific in OpenAI Agents SDK

Ready-to-use prompts you can give your OpenAI Agents SDK agent to start working with Calendarific immediately.

"List all public holidays in Brazil for 2024."

"Are there any holidays in New York (US-NY) on December 25th?"

"Show me the religious holidays in Italy for 2024."

Troubleshooting Calendarific MCP Server with OpenAI Agents SDK

Common issues when connecting Calendarific to OpenAI Agents SDK through the Vinkius, and how to resolve them.

MCPServerStreamableHttp not found

Ensure you have the latest version: pip install --upgrade openai-agents

Agent not calling tools

Make sure your prompt explicitly references the task the tools can help with.

Calendarific + OpenAI Agents SDK FAQ

Common questions about integrating Calendarific MCP Server with OpenAI Agents SDK.

How does the OpenAI Agents SDK connect to MCP?

Use MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.