GovInfo MCP Server for LangChain 8 tools — connect in under 2 minutes
LangChain is the leading Python framework for composable LLM applications. Connect GovInfo 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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Vinkius supports streamable HTTP and SSE.
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({
"govinfo": {
"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 GovInfo, show me what tools are available.",
}]
})
print(response["messages"][-1].content)
asyncio.run(main())
* 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 GovInfo MCP Server
Connect to the official GovInfo API and empower your AI agent with direct access to official publications from all three branches of the US Federal Government. Query congressional bills, federal regulations, court opinions, and presidential documents using natural language without navigating complex government databases.
LangChain's ecosystem of 500+ components combines seamlessly with GovInfo through native MCP adapters. Connect 8 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
- Document Discovery — List available document collections and find specific packages based on date ranges or collection codes (e.g., BILLS, FR, CHRG)
- Deep Search — Perform complex searches across the entire GovInfo database to find relevant legislative or regulatory documents
- Daily Updates — Retrieve a list of all documents officially published on a specific date
- Metadata Extraction — Get detailed summary metadata for specific packages or their sub-documents (granules)
- Contextual Relationships — Discover related documents to understand the legislative or regulatory history of a specific bill or rule
The GovInfo MCP Server exposes 8 tools through the Vinkius. Connect it to LangChain in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect GovInfo to LangChain via MCP
Follow these steps to integrate the GovInfo MCP Server with LangChain.
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 8 tools from GovInfo via MCP
Why Use LangChain with the GovInfo MCP Server
LangChain provides unique advantages when paired with GovInfo through the Model Context Protocol.
The largest ecosystem of integrations, chains, and agents. combine GovInfo 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 GovInfo queries for multi-turn workflows
GovInfo + LangChain Use Cases
Practical scenarios where LangChain combined with the GovInfo MCP Server delivers measurable value.
RAG with live data: combine GovInfo tool results with vector store retrievals for answers grounded in both real-time and historical data
Autonomous research agents: LangChain agents query GovInfo, synthesize findings, and generate comprehensive research reports
Multi-tool orchestration: chain GovInfo tools with web scrapers, databases, and calculators in a single agent run
Production monitoring: use LangSmith to trace every GovInfo tool call, measure latency, and optimize your agent's performance
GovInfo MCP Tools for LangChain (8)
These 8 tools become available when you connect GovInfo to LangChain via MCP:
get_collection
Get packages within a collection by date range
get_granule_summary
Get summary metadata for a specific granule
get_package_summary
Get summary metadata for a specific package
get_published
Get documents published on a specific date
get_related_documents
Get documents related to a specific package
list_collections
List available document collections
list_package_granules
List granules (sub-documents) for a package
search_documents
Search documents via the GovInfo Search API
Example Prompts for GovInfo in LangChain
Ready-to-use prompts you can give your LangChain agent to start working with GovInfo immediately.
"What collections of documents are available on GovInfo?"
"Show me the summary for the Federal Register package 'FR-2023-01-10'."
Troubleshooting GovInfo MCP Server with LangChain
Common issues when connecting GovInfo to LangChain through the Vinkius, and how to resolve them.
MultiServerMCPClient not found
pip install langchain-mcp-adaptersGovInfo + LangChain FAQ
Common questions about integrating GovInfo MCP Server with LangChain.
How does LangChain connect to MCP servers?
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?
Can I trace MCP tool calls in LangSmith?
Connect GovInfo with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect GovInfo to LangChain
Get your token, paste the configuration, and start using 8 tools in under 2 minutes. No API key management needed.