BOE (Boletín Oficial del Estado) MCP Server for LangChainGive LangChain instant access to 17 tools to Get Boe Summary, Get Borme Summary, Get Consolidated Legislation, and more

Name: BOE (Boletín Oficial del Estado)
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 BOE (Boletín Oficial del Estado) 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 BOE (Boletín Oficial del Estado) MCP Server for LangChain is a standout in the Knowledge Management category — giving your AI agent 17 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({
        "boe-boletin-oficial-del-estado": {
            "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 BOE (Boletín Oficial del Estado), show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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About BOE (Boletín Oficial del Estado) MCP Server

Connect to the Boletín Oficial del Estado (BOE) Open Data service to navigate the Spanish legal system through natural conversation. This server provides comprehensive access to official gazettes and updated laws.

LangChain's ecosystem of 500+ components combines seamlessly with BOE (Boletín Oficial del Estado) through native MCP adapters. Connect 17 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

Consolidated Legislation — Search for the latest updated versions of Spanish laws and regulations using search_consolidated_legislation
Daily Summaries — Retrieve the full index of documents published in the BOE or BORME (Mercantile Registry) for any specific date
Legal Analysis — Access detailed metadata, European Legislation Identifiers (ELI), and relations between different legal norms
Full Text Access — Fetch the complete text of laws or specific blocks (articles/sections) to analyze legal requirements
Structural Indexing — Understand the hierarchy of a law by listing its internal blocks and sections

The BOE (Boletín Oficial del Estado) MCP Server exposes 17 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 17 BOE (Boletín Oficial del Estado) tools available for LangChain

When LangChain connects to BOE (Boletín Oficial del Estado) through Vinkius, your AI agent gets direct access to every tool listed below — spanning spanish-law, legislation, official-gazette, 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 boe summary on BOE (Boletín Oficial del Estado)

Get daily summary of the BOE

get

Get borme summary on BOE (Boletín Oficial del Estado)

Get daily summary of the BORME

get

Get consolidated legislation on BOE (Boletín Oficial del Estado)

ID format: BOE-A-YYYY-NUMBER. Get consolidated legislation by ID

get

Get legislation analysis on BOE (Boletín Oficial del Estado)

Get legal analysis for consolidated legislation

get

Get legislation block on BOE (Boletín Oficial del Estado)

g., a specific article). Get specific block of consolidated legislation

get

Get legislation eli metadata on BOE (Boletín Oficial del Estado)

Get ELI metadata for consolidated legislation

get

Get legislation metadata on BOE (Boletín Oficial del Estado)

Get metadata for consolidated legislation

get

Get legislation text on BOE (Boletín Oficial del Estado)

Get full text of consolidated legislation

get

Get legislation text index on BOE (Boletín Oficial del Estado)

) structuring the latest version. Get text index of consolidated legislation

list

List consolidation states on BOE (Boletín Oficial del Estado)

List auxiliary consolidation states

list

List departments on BOE (Boletín Oficial del Estado)

). List auxiliary issuing departments

list

List posterior relations on BOE (Boletín Oficial del Estado)

List auxiliary posterior legal relations

list

List previous relations on BOE (Boletín Oficial del Estado)

List auxiliary previous legal relations

list

List ranks on BOE (Boletín Oficial del Estado)

). List auxiliary legal ranks

list

List scopes on BOE (Boletín Oficial del Estado)

List auxiliary scopes

list

List subjects on BOE (Boletín Oficial del Estado)

List auxiliary subjects/topics

Search consolidated legislation on BOE (Boletín Oficial del Estado)

Search consolidated legislation

Connect BOE (Boletín Oficial del Estado) to LangChain via MCP

Follow these steps to wire BOE (Boletín Oficial del Estado) 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 17 tools from BOE (Boletín Oficial del Estado) via MCP

Why Use LangChain with the BOE (Boletín Oficial del Estado) MCP Server

LangChain provides unique advantages when paired with BOE (Boletín Oficial del Estado) through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine BOE (Boletín Oficial del Estado) 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 BOE (Boletín Oficial del Estado) queries for multi-turn workflows

BOE (Boletín Oficial del Estado) + LangChain Use Cases

Practical scenarios where LangChain combined with the BOE (Boletín Oficial del Estado) MCP Server delivers measurable value.

RAG with live data: combine BOE (Boletín Oficial del Estado) tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query BOE (Boletín Oficial del Estado), synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain BOE (Boletín Oficial del Estado) tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every BOE (Boletín Oficial del Estado) tool call, measure latency, and optimize your agent's performance

Example Prompts for BOE (Boletín Oficial del Estado) in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with BOE (Boletín Oficial del Estado) immediately.

"Show me the summary of documents published in the BOE for January 10th, 2024."

"Search for consolidated legislation related to 'Ley de Propiedad Intelectual'."

"Get the legal analysis and relations for law BOE-A-2015-10565."

Troubleshooting BOE (Boletín Oficial del Estado) MCP Server with LangChain

Common issues when connecting BOE (Boletín Oficial del Estado) to LangChain through Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

BOE (Boletín Oficial del Estado) + LangChain FAQ

Common questions about integrating BOE (Boletín Oficial del Estado) 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.