BuiltWith Tech Lookup MCP Server for LangChain 8 tools — connect in under 2 minutes
LangChain is the leading Python framework for composable LLM applications. Connect BuiltWith Tech Lookup 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
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({
"builtwith-tech-lookup": {
"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 BuiltWith Tech Lookup, 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 BuiltWith Tech Lookup MCP Server
Equip your AI agent with the industry standard for website technology profiling through the BuiltWith MCP server. This integration provides instant access to the technology stack of millions of domains. Your agent can identify the Content Management System (CMS), analytics tools, advertising networks, hosting providers, and JavaScript frameworks used by any website. Whether you are conducting lead qualification, competitive research, or auditing digital infrastructure, your agent acts as a dedicated technical architect through natural conversation.
LangChain's ecosystem of 500+ components combines seamlessly with BuiltWith Tech Lookup 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
- Tech Stack Profiling — Retrieve a comprehensive list of all technologies used by a specific domain.
- CMS Detection — Identify if a site is running on WordPress, Shopify, Magento, or other platforms.
- Analytics Auditing — Discover which tracking and data tools are integrated into a website.
- Infrastructure Discovery — Identify hosting, CDN, and security providers for any digital property.
The BuiltWith Tech Lookup 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 BuiltWith Tech Lookup to LangChain via MCP
Follow these steps to integrate the BuiltWith Tech Lookup 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 BuiltWith Tech Lookup via MCP
Why Use LangChain with the BuiltWith Tech Lookup MCP Server
LangChain provides unique advantages when paired with BuiltWith Tech Lookup through the Model Context Protocol.
The largest ecosystem of integrations, chains, and agents. combine BuiltWith Tech Lookup 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 BuiltWith Tech Lookup queries for multi-turn workflows
BuiltWith Tech Lookup + LangChain Use Cases
Practical scenarios where LangChain combined with the BuiltWith Tech Lookup MCP Server delivers measurable value.
RAG with live data: combine BuiltWith Tech Lookup tool results with vector store retrievals for answers grounded in both real-time and historical data
Autonomous research agents: LangChain agents query BuiltWith Tech Lookup, synthesize findings, and generate comprehensive research reports
Multi-tool orchestration: chain BuiltWith Tech Lookup tools with web scrapers, databases, and calculators in a single agent run
Production monitoring: use LangSmith to trace every BuiltWith Tech Lookup tool call, measure latency, and optimize your agent's performance
BuiltWith Tech Lookup MCP Tools for LangChain (8)
These 8 tools become available when you connect BuiltWith Tech Lookup to LangChain via MCP:
get_domain_company_info
Uses the Company API. Get company information for a domain
get_domain_keywords
Uses the Keywords API. Get keyword profile for a domain
get_domain_relationships
Uses the rv2 Relationships API. Get infrastructure relationships for a domain
get_domain_trust
Uses the Trust API. Get trust indicators for a domain
get_free_domain_profile
Does not consume premium credits. Get basic technology categories for a domain
get_tech_domain_lists
Uses the Lists API. Get lists of domains using a specific technology
get_tech_trends
g., Shopify, React). Uses the v6 Trends API. Get usage trends for a technology
lookup_domain_tech
Uses the v22 Domain API. Lookup complete technology stack for a domain
Example Prompts for BuiltWith Tech Lookup in LangChain
Ready-to-use prompts you can give your LangChain agent to start working with BuiltWith Tech Lookup immediately.
"Lookup the tech stack for 'airbnb.com'."
"Identify the CMS used by 'techcrunch.com'."
"Does 'tesla.com' use any marketing automation tools?"
Troubleshooting BuiltWith Tech Lookup MCP Server with LangChain
Common issues when connecting BuiltWith Tech Lookup to LangChain through the Vinkius, and how to resolve them.
MultiServerMCPClient not found
pip install langchain-mcp-adaptersBuiltWith Tech Lookup + LangChain FAQ
Common questions about integrating BuiltWith Tech Lookup 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 BuiltWith Tech Lookup 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 BuiltWith Tech Lookup to LangChain
Get your token, paste the configuration, and start using 8 tools in under 2 minutes. No API key management needed.