Maranhão Open Data MCP Server for LangChainGive LangChain instant access to 6 tools to Get Package, Get Resource, List Packages, and more

Name: Maranhão Open Data
Price: 29 USD
Availability: InStock
Rating: 4.9 (1 reviews)
Author: Vinkius

GDPR Free for Subscribers

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

Ask AI about this MCP Server for LangChain

Open in ChatGPT Open in Claude Open in Perplexity

The Maranhão Open Data MCP Server for LangChain is a standout in the Knowledge Management category — giving your AI agent 6 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

Claude

ChatGPT

Cursor

Gemini

Windsurf

VS Code

JetBrains

Vercel

+ other MCP clients

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({
        "maranhao-open-data": {
            "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 Maranhão Open Data, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

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 Maranhão Open Data MCP Server

Connect to the Maranhão Open Data Portal to explore government transparency data directly through your AI agent. This server interfaces with the state's CKAN-based infrastructure to provide real-time access to public information.

LangChain's ecosystem of 500+ components combines seamlessly with Maranhão Open Data through native MCP adapters. Connect 6 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

Dataset Discovery — List all available packages or search for specific topics like education, health, or finance using list_packages and search_packages.
Metadata Inspection — Retrieve detailed metadata for datasets and specific resources (CSV, PDF, API endpoints) with get_package and get_resource.
Data Exploration — Search within specific resource rows using search_datastore or execute complex SQL queries against the DataStore for deep analysis with search_datastore_sql.

The Maranhão Open Data MCP Server exposes 6 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 6 Maranhão Open Data tools available for LangChain

When LangChain connects to Maranhão Open Data through Vinkius, your AI agent gets direct access to every tool listed below — spanning open-data, transparency, public-records, 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.

get

Get package on Maranhão Open Data

Retrieve dataset metadata

get

Get resource on Maranhão Open Data

g., a CSV file or API endpoint within a dataset). Retrieve resource metadata

list

List packages on Maranhão Open Data

List all datasets (packages) on the portal

Search datastore on Maranhão Open Data

Search within a resource in the DataStore

Search datastore sql on Maranhão Open Data

Execute SQL query against the DataStore

Search packages on Maranhão Open Data

Search for datasets

Connect Maranhão Open Data to LangChain via MCP

Follow these steps to wire Maranhão Open Data 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 6 tools from Maranhão Open Data via MCP

Why Use LangChain with the Maranhão Open Data MCP Server

LangChain provides unique advantages when paired with Maranhão Open Data through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine Maranhão Open Data 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 Maranhão Open Data queries for multi-turn workflows

Maranhão Open Data + LangChain Use Cases

Practical scenarios where LangChain combined with the Maranhão Open Data MCP Server delivers measurable value.

RAG with live data: combine Maranhão Open Data tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query Maranhão Open Data, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain Maranhão Open Data tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every Maranhão Open Data tool call, measure latency, and optimize your agent's performance

Example Prompts for Maranhão Open Data in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with Maranhão Open Data immediately.

"List all available datasets on the Maranhão Open Data portal."

"Search for datasets related to 'saúde' (health)."

"Run a SQL query to select the first 5 rows from the resource 'd3b0c...'."

Troubleshooting Maranhão Open Data MCP Server with LangChain

Common issues when connecting Maranhão Open Data to LangChain through Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

Maranhão Open Data + LangChain FAQ

Common questions about integrating Maranhão Open Data 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.