How to Use the Holiday API MCP in OpenAI Agents SDK

Q: Can my OpenAI Agents SDK handle multi-country logic using Holiday API?

Yes, the agent can chain listsupportedcountries to verify geographic coverage before calling getholidays. This prevents runtime errors when your agent evaluates payroll or logistics across different jurisdictions.

Q: How do I handle regional language translations for holiday names?

Use the listsupportedlanguages tool to retrieve available locales. Your agent can then request holiday names in the customer's native language, ensuring clear communication on delivery delays.

Stop guessing international delivery dates. Let your OpenAI Agents SDK run guardrailed checks on global holiday schedules instantly.

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Connect Holiday API MCP to OpenAI Agents SDK

Create your Vinkius account to connect Holiday API to OpenAI Agents SDK 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 Holiday API with OpenAI Agents SDK

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Run guardrailed date checks via OpenAI Agents SDK

The `get_workdays_count` tool measures the exact operational gap between two dates, taking local public holidays into account. When your python agent handles payroll calculations, this tool acts as a runtime validator to ensure you never pay incorrect overtime rates. By exposing this MCP Server to your multi-agent system, the SDK validates the outputs before execution. If an agent tries to schedule a shipment on a localized holiday, the built-in guardrails flag the conflict, saving your logistics team from expensive delivery failures.

Automate international shipping windows

Calculating when business operations resume is the job of the `get_next_workday` tool, which skips regional closures and weekends. This prevents your delivery pipelines from stalling when dealing with complex, multi-country supply chains. Your shipping agents auto-discover this endpoint and calculate the true transit time dynamically. The OpenAI dashboard traces every call, showing you exactly when and why an agent adjusted a delivery window using this MCP interface.

Localize regional scheduling rules

Querying official federal closures for a specific country and year is handled by the `get_holidays` tool directly within your agent workflow. You no longer have to maintain hardcoded lists of international time-off patterns. Combined with `list_supported_countries` and `list_supported_languages`, your system translates operational dates and adapts to regional calendars on the fly. This keeps your automated customer updates accurate, regardless of where your buyers live.

Setup guide

Set up Holiday API MCP in OpenAI Agents SDK

Prerequisites

Python 3.10+ installed
openai-agents package (pip install openai-agents)
Active Vinkius subscription with a valid endpoint token

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all Holiday API tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives Holiday API tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Holiday API tools and returns structured results. Copy the full example on the right to get started.

agent.py

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

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="Holiday API Agent",
            instructions="You have access to Holiday API tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Holiday API. 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 Holiday API MCP in OpenAI Agents SDK

Install openai-agents and initialize MCPServerStreamableHttp with your Vinkius MCP Server URL. Pass this instance directly into the Agent constructor's mcp_servers list. The SDK automatically discovers all tools like `get_holidays` without manual schema registration.

Yes, the agent can chain `list_supported_countries` to verify geographic coverage before calling `get_holidays`. This prevents runtime errors when your agent evaluates payroll or logistics across different jurisdictions.

Set cacheToolsList to True in your server configuration parameter block. This optimizes startup performance by preventing the SDK from querying the server schema on every single turn.

Use the `list_supported_languages` tool to retrieve available locales. Your agent can then request holiday names in the customer's native language, ensuring clear communication on delivery delays.

This integration only processes country codes, years, and date ranges. No personally identifiable information or payroll amounts ever leave your local environment, keeping your operational data private.

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