How to Use the BCB Inflação — IPCA, IGP-M, INPC e Expectativas MCP in LangChain

Q: Which tool should my agent use for rental contract adjustments?

Your agent should invoke getigpm for rent adjustments. This index represents a weighted mix of wholesale, consumer, and construction costs specifically used for indexing contracts in Brazil.

Feed real-time Brazilian inflation metrics and Focus Survey expectations directly into your LangChain reasoning loops.

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Connect BCB Inflação — IPCA, IGP-M, INPC e Expectativas MCP to LangChain

Create your Vinkius account to connect BCB Inflação — IPCA, IGP-M, INPC e Expectativas to LangChain 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 BCB Inflação — IPCA, IGP-M, INPC e Expectativas with LangChain

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Fetch Brazilian economic data inside LangChain chains

The `get_ipca` tool pulls the official Brazilian inflation index (SGS series 433) to let your agent calculate real-time inflation-adjusted values. It targets families earning 1 to 40 minimum wages, giving your chains the exact baseline the Central Bank of Brazil uses for its monetary policy targets. You feed this raw data into subsequent chain steps without writing manual API wrappers. LangChain routes the index values directly through our secure MCP interface to your prompt templates.

Compare actual inflation against market expectations

The `get_expectativas_inflacao` tool retrieves the Brazilian Central Bank's Focus Survey expectations, including the mean, median, and standard deviation for indices like IPCA and IGP-M. This lets your agent compare what the market predicted against actual historical performance. Your multi-step chains can use this data to flag variance anomalies. The agent evaluates the spread between the survey's maximum and minimum predictions, then outputs a structured report on market sentiment.

Calculate contract adjustments using this MCP Server

The `get_igpm` tool fetches the General Market Price Index (SGS series 189), which aggregates wholesale, consumer, and construction costs. Rent contracts and commercial agreements in Brazil rely on this specific metric for annual price adjustments. Combine this with `get_inpc` to analyze wage adjustment baselines for lower-income brackets. Your LangChain agents can run these queries sequentially, feeding the output of one index check into your contract calculation functions automatically.

Setup guide

Set up BCB Inflação — IPCA, IGP-M, INPC e Expectativas MCP in LangChain

Prerequisites

Python 3.10+ installed
langchain-mcp-adapters + langgraph packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run pip install langchain-mcp-adapters langgraph langchain-openai. The MCP adapters package converts MCP tools into native LangChain BaseTool objects.
2

Connect via HTTP transport
Use MultiServerMCPClient with "transport": "http" pointing to your Vinkius endpoint. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Create a ReAct agent
Pass the discovered tools to create_react_agent() from LangGraph. The agent automatically routes BCB Inflação — IPCA, IGP-M, INPC e Expectativas tool calls through the MCP protocol.
4

Run with any LLM
Swap ChatOpenAI for ChatAnthropic, ChatGoogleGenerativeAI, or any LangChain-compatible model. The MCP tools work identically across all providers.

agent.py

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

async with MultiServerMCPClient({
    "bcb-inflacao-ipca-igp-m-inpc-e-expectativas-mcp": {
        "transport": "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,
    )
    result = await agent.ainvoke({
        "messages": "List recent BCB Inflação — IPCA, IGP-M, INPC e Expectativas transactions"
    })
    print(result["messages"][-1].content)

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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 Banco Central do Brasil. 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 BCB Inflação — IPCA, IGP-M, INPC e Expectativas MCP in LangChain

You install the MCP adapter package and pass the Vinkius server URL to the client. The client automatically registers the five inflation tools, allowing your agent to call them during its execution cycle.

Yes, every tool call is fully observable. You can track latency, input parameters, and the raw economic data returned from the Central Bank of Brazil within your LangSmith dashboard.

Yes, you can combine this MCP Server with other financial tools under a single multi-server client. Your agent will decide when to pull Brazilian inflation data versus other global metrics based on user prompts.

Your agent should invoke `get_igpm` for rent adjustments. This index represents a weighted mix of wholesale, consumer, and construction costs specifically used for indexing contracts in Brazil.

Vinkius runs this server inside an isolated, ephemeral V8 sandbox. Only the public inflation parameters you request are transmitted, and no sensitive financial data is stored on our servers after the request resolves.

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