How to Use the Holiday API MCP in AutoGen

Q: How do my AutoGen agents access the Holiday API tools?

You use the mcpservertools function from the autogen-ext library, pointing it to your Vinkius server URL. This returns a list of tool functions that you pass directly to your AssistantAgent configuration.

Let your AutoGen agents debate logistics, challenge delivery dates, and reach a consensus using real holiday data.

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Connect Holiday API MCP to AutoGen

Create your Vinkius account to connect Holiday API to AutoGen 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 AutoGen

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Enable Multi-Agent Date Negotiation

One agent's estimate is just an opinion. With AutoGen, you can create a team of agents that collaborate on scheduling. A 'Planner' agent can use `get_next_workday` to propose a project deadline, while a 'QA' agent uses `get_holidays` to double-check for regional holidays the planner missed. This back-and-forth is where AutoGen shines. The agents converse, sharing their findings from the Holiday API tools until they converge on a date that satisfies all constraints. You're not just getting an answer; you're getting a validated, debated conclusion.

Build a Compliance and Logistics Team

Set up a conversation between specialized agents. An 'Operations' agent uses `get_workdays_count` to calculate the time needed for an international shipment. A 'Compliance' agent, aware of labor laws, can then use `get_holidays` to flag any dates that require overtime pay. The agents debate the trade-offs between speed and cost. This interaction, powered by a shared MCP Server, helps you find solutions that a single agent might overlook. It's how you automate complex, multi-faceted decisions.

Validate Agent Assumptions about Time

An agent might assume a 'workday' is Monday to Friday. Your 'Validator' agent can challenge that. Before any calculation, it can call `list_supported_countries` and, for certain regions, ask for human clarification on the definition of a weekend. Then, the team can proceed using tools like `get_next_workday` with a shared, accurate model of the workweek. This MCP toolset gives your agent group the ground truth they need to stop making bad assumptions.

Setup guide

Set up Holiday API MCP in AutoGen

Prerequisites

Python 3.10+ installed
autogen-ext[mcp] package
Active Vinkius subscription with a valid endpoint token

1

Install AutoGen with MCP
Run pip install "autogen-ext[mcp]" autogen-agentchat. The MCP extension includes mcp_server_tools for stateless tool access.
2

Fetch tools from the MCP
Call mcp_server_tools(SseServerParams(url=...)) with your Vinkius endpoint. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Run your agent
Pass the tools to AssistantAgent and call agent.run(). The agent invokes Holiday API tools and returns structured results.

agent.py

from autogen_ext.tools.mcp import SseServerParams, mcp_server_tools
from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient

server_params = SseServerParams(
    url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)

tools = await mcp_server_tools(server_params)

agent = AssistantAgent(
    name="Holiday API_assistant",
    model_client=OpenAIChatCompletionClient(model="gpt-4o"),
    tools=tools,
)

result = await agent.run("List recent Holiday API data")
print(result.messages[-1].content)

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Prerequisites

Python 3.10+ installed
autogen-ext[mcp] + autogen-agentchat
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Same packages as above. McpWorkbench is ideal when your agent needs stateful sessions across multiple tool calls.
2

Use McpWorkbench as context manager
Wrap your agent in async with McpWorkbench(...) to maintain shared state and resources. The workbench manages the full MCP session lifecycle.
3

Run with workbench
Pass workbench=workbench to your agent. State is preserved across multiple tool calls within the same session.

agent.py

from autogen_ext.tools.mcp import McpWorkbench, SseServerParams
from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient

server_params = SseServerParams(
    url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)

async with McpWorkbench(server_params) as workbench:
    agent = AssistantAgent(
        name="Holiday API_assistant",
        model_client=OpenAIChatCompletionClient(model="gpt-4o"),
        workbench=workbench,
    )

    result = await agent.run("List recent Holiday API data")
    print(result.messages[-1].content)

Get your connection token →

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 AutoGen

You use the `mcp_server_tools` function from the `autogen-ext` library, pointing it to your Vinkius server URL. This returns a list of tool functions that you pass directly to your `AssistantAgent` configuration.

Absolutely. That's the primary use case. You equip multiple agents with the same set of tools, and they can independently call `get_holidays` or `get_workdays_count` to support their arguments during the conversation.

The key is in your agent's system message. You need to clearly describe what each tool does, for example, 'Use get_holidays to find official non-working days for a given country and year.' This helps the agent know when to trigger the right tool.

The MCP Server will return an error. A well-configured 'UserProxyAgent' in your AutoGen setup can catch this error and either ask the user for a correction or instruct the other agent to first call `list_supported_countries` to get a valid code.

The data—country codes, dates—is part of the conversation payload between agents. When a tool is called, that specific data is sent to the Vinkius-managed MCP Server. The server processes it and returns a result without storing your conversational history.

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