Correios do Brazil MCP Server for LangChainGive LangChain instant access to 3 tools to Calculate Prices, Consult Cep, Estimate Delivery Time

Name: Correios do Brazil
Price: 29 USD
Availability: InStock
Rating: 5.0 (1 reviews)
Author: Vinkius

GDPR Free for Subscribers

LangChain is the leading Python framework for composable LLM applications. Connect Correios do Brazil through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.

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The Correios do Brazil MCP Server for LangChain is a standout in the Ecommerce category — giving your AI agent 3 tools to work with, ready to go from day one.

Built for AI Agents by Vinkius

Vinkius delivers Streamable HTTP and SSE to any MCP client

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python

import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with MultiServerMCPClient({
        "correios-do-brazil": {
            "transport": "streamable_http",
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
        }
    }) as client:
        tools = client.get_tools()
        agent = create_react_agent(
            ChatOpenAI(model="gpt-4o"),
            tools,
        )
        response = await agent.ainvoke({
            "messages": [{
                "role": "user",
                "content": "Using Correios do Brazil, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

Fully ManagedVinkius Servers

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High SecurityEnterprise-grade

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EU AI ActCompliant

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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 Correios do Brazil MCP Server

Connect your Correios account to any AI agent to automate logistics and shipping calculations directly within your workflow.

LangChain's ecosystem of 500+ components combines seamlessly with Correios do Brazil through native MCP adapters. Connect 3 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.

What you can do

Shipping Calculation — Calculate precise shipping costs based on origin, destination, weight, and package dimensions for services like SEDEX and PAC.
Delivery Estimates — Get the estimated number of working days for any delivery across Brazil.
Address Lookup (CEP) — Instantly retrieve full address details (street, neighborhood, city, state) from any Brazilian ZIP code.
Service Comparison — Compare different postal service codes to find the best shipping option for your needs.

The Correios do Brazil MCP Server exposes 3 tools through the Vinkius. Connect it to LangChain in under two minutes — credentials fully managed, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

All 3 Correios do Brazil tools available for LangChain

When LangChain connects to Correios do Brazil through Vinkius, your AI agent gets direct access to every tool listed below — spanning postal-service, shipping-rates, delivery-tracking, and more. Every call runs in a secure, isolated environment with full audit visibility. Beyond a simple connection, you get real-time monitoring of agent activity, enterprise governance, and optimized token usage.

calculate

Calculate prices on Correios do Brazil

Calculate shipping cost for postal services

consult

Consult cep on Correios do Brazil

Consult address information for a ZIP code

estimate

Estimate delivery time on Correios do Brazil

Estimate delivery time between two ZIP codes

Connect Correios do Brazil to LangChain via MCP

Follow these steps to wire Correios do Brazil into LangChain. The entire setup takes under two minutes — your credentials stay safe behind Vinkius.

Install dependencies

Run pip install langchain langchain-mcp-adapters langgraph langchain-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save the code and run python agent.py

Explore tools

The agent discovers 3 tools from Correios do Brazil via MCP

Why Use LangChain with the Correios do Brazil MCP Server

LangChain provides unique advantages when paired with Correios do Brazil through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine Correios do Brazil MCP tools with 500+ LangChain components

Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step

LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging

Memory and conversation persistence let agents maintain context across Correios do Brazil queries for multi-turn workflows

Correios do Brazil + LangChain Use Cases

Practical scenarios where LangChain combined with the Correios do Brazil MCP Server delivers measurable value.

RAG with live data: combine Correios do Brazil tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query Correios do Brazil, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain Correios do Brazil tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every Correios do Brazil tool call, measure latency, and optimize your agent's performance

Example Prompts for Correios do Brazil in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with Correios do Brazil immediately.

"Calculate the shipping cost for a 1kg box (20x20x20cm) from 01001000 to 20040002 using SEDEX (04014)."

"How long does it take for a PAC delivery from 01310-200 to 70040-900?"

"What is the address for CEP 01001000?"

Troubleshooting Correios do Brazil MCP Server with LangChain

Common issues when connecting Correios do Brazil to LangChain through Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

Correios do Brazil + LangChain FAQ

Common questions about integrating Correios do Brazil MCP Server with LangChain.

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.

Can I trace MCP tool calls in LangSmith?

Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.

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