How to Use the BR Business Days Calculator MCP in OpenAI Agents SDK

Q: Does BR Business Days Calculator support negative day math in OpenAI Agents SDK?

Yes, you pass negative integers to addbusinessdays to subtract days. Your agent calculates past deadlines or starting points by sending a negative value to the server.

Connect your OpenAI Agents SDK to this MCP Server for precise Brazilian calendar calculations and SLA tracking.

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Connect BR Business Days Calculator MCP to OpenAI Agents SDK

Create your Vinkius account to connect BR Business Days Calculator 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 BR Business Days Calculator with OpenAI Agents SDK

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Stop LLM Calendar Hallucinations with this MCP Server

`add_business_days` lets your agent calculate exact Brazilian deadlines directly in your OpenAI Agents SDK pipeline. LLMs fail at calendar math because they count days linearly instead of skipping regional holidays. This tool executes deterministic date addition on the server, returning a solid string you can trust. Your multi-agent systems use this tool during step-by-step execution. When one agent sets a deadline, it triggers the calculation instantly. You get clean ISO dates back, keeping your automated workflows completely accurate.

Instant Brazilian Holiday Validation

`is_business_day` checks if any specific date is a working day in Brazil, automatically filtering out national holidays and weekends. Your python agents run this check before scheduling tasks or triggering payouts. This MCP Server ensures your schedule is valid. OpenAI Agents SDK auto-discovers this function through the HTTP stream. The agent queries the endpoint, gets a boolean response, and decides whether to halt or proceed with the scheduled action.

Safe Production Execution with OpenAI Agents SDK

This integration exposes the calendar tools directly to your agent constructors. You pass the server to the constructor, and the agent maps the capabilities without manual JSON schemas. The built-in guardrails in the SDK validate the parameters before the tool runs. Tracing via the OpenAI dashboard lets you monitor every date calculation. You see exactly what inputs went into `add_business_days` and what outputs returned. This visibility keeps your production deployment running without silent failures.

Setup guide

Set up BR Business Days Calculator 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 BR Business Days Calculator tools at runtime.
3

Create your Agent

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

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate BR Business Days Calculator 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="BR Business Days Calculator Agent",
            instructions="You have access to BR Business Days Calculator tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Common questions about BR Business Days Calculator MCP in OpenAI Agents SDK

Run pip install openai-agents to start. Connect the MCP server using the MCPServerStreamableHttp class with your Vinkius endpoint. Pass the server in the mcp_servers list when initializing your agent.

Yes, you pass negative integers to add_business_days to subtract days. Your agent calculates past deadlines or starting points by sending a negative value to the server.

Set cacheToolsList=True in your connection parameters. This prevents the SDK from querying the Vinkius endpoint for schemas on every single run, cutting down execution latency.

The server handles all Brazilian national holidays. It focuses on federal calendar dates that affect banking and national business operations across the country.

The server only processes ISO date strings (YYYY-MM-DD) and integer day offsets. No personal data or transaction details ever leave your local OpenAI Agents SDK environment.

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