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How to connect Builtwith to Claude

Connect Claude Web, Desktop and Cowork to Builtwith MCP. Get all websites using shopify in 2024, show historical tech changes for example.com, and more using natural language, with authentication handled for you.

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BuiltWith is a web technology profiler that uncovers the technologies powering any website. Gain actionable insights into analytics, hosting, and content management stacks for smarter research and lead generation.

10 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Builtwith account to Claude via Composio Connect, enabling it to get all websites using Shopify in 2024, show historical tech changes for example.com, find online stores selling Nike shoes, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Builtwith with

Claude CodeOpenAI Agents SDKClaude Agent SDKCodexKimi CodeOpenClawHermesAtomic AgentCLIGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Connecting Builtwith to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Builtwith account

Back in Claude, ask it to connect to Builtwith or give it any Builtwith-related task.

For example, ask Claude to:

  • "Get all websites using Shopify in 2024"
  • "Show historical tech changes for example.com"
  • "Find online stores selling Nike shoes"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Builtwith account is ready to use.

What is the Builtwith Claude Connector, and what's possible with it?

The Builtwith MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your BuiltWith account. It provides structured and secure access to web technology profiling and competitive intelligence data, so your agent can perform actions like analyzing website tech stacks, discovering competitor technologies, generating domain lists, and recommending similar sites on your behalf.

  • Comprehensive website technology profiling: Instantly analyze the current and historical tech stack of any website, including CMS, analytics, hosting, and more.
  • Bulk domain and technology list generation: Have your agent create and export lists of domains using specific technologies, or generate tailored files for large-scale research or outreach.
  • Competitor and product discovery: Identify financial, e-commerce, or product data for domains and uncover new market entrants or online retailers selling specific products.
  • Technology usage trends and datasets: Query historical datasets to track how specific technologies have been adopted across the internet over time, supporting market research and technology forecasting.
  • Intelligent site recommendations: Request suggestions for websites with similar technology profiles to a given domain, helping expand prospecting or research lists with relevant leads.

Troubleshooting

1. Why does Claude not use the Composio connector for Builtwith?

The connector can show as connected, but Claude must use it in each Builtwith conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Builtwith again.

2. Why does Claude show an MCP server error before Builtwith connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Builtwith.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Builtwith.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Builtwith authorization link not work?

The Composio connector is one server. Your Builtwith account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Builtwith connection.
  • Composio creates a fresh Builtwith authorization link.
  • Open that link in your browser and finish the Builtwith sign-in.

4. Why do Builtwith actions fail after they worked before?

The Builtwith connection can expire or lose permission.

  • Ask Claude to inspect the Builtwith connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Builtwith account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Builtwith.
  • If the action still fails with a permission error, check that the connected account has that permission in Builtwith itself.

5. How do I switch to a different Builtwith account?

Claude can manage the Builtwith connection for you.

  • Ask Claude to disconnect or delete the current Builtwith account.
  • Ask Claude to connect Builtwith again.
  • Open the new Composio authorization link for Builtwith.
  • Sign in with the other Builtwith account in the browser.
  • After the account connects, ask Claude to retry the Builtwith task.

6. Why is my Builtwith connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Builtwith connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Builtwith tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Builtwith.
TOOLS

Supported Tools

Every Builtwith action and event your agent gets out of the box.

Create Domain List File

Tool to create a TXT or ZIP file from a list of domains.

Datasets Lookup

Tool to access mass Internet technology usage information from 2000 to today.

Domain API Lookup

Tool to retrieve current and historical technology information of a website.

Financial API Lookup

Tool to fetch financial data for a domain.

Free API Lookup

Tool to access last updated dates and counts for technology groups and categories for websites.

Lists API Get List

Tool to retrieve a list of websites using a specific technology.

Product API Lookup

Tool to find websites selling specific eCommerce products.

Recommendations API Lookup

Tool to generate a list of websites with similar technology profiles.

Redirects API Lookup

Tool to retrieve live and historical redirects for a website.

Social API Lookup

Tool to retrieve domains associated with social media profile URLs.

FRAMEWORKS

How to build Builtwith MCP Agent with another framework

Claude Code logo

Claude Code

Use Builtwith MCP with Claude Code

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Builtwith MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Builtwith MCP with Claude Agent SDK

Codex logo

Codex

Use Builtwith MCP with Codex

Kimi Code logo

Kimi Code

Use Builtwith MCP with Kimi Code

OpenClaw logo

OpenClaw

Use Builtwith MCP with OpenClaw

Hermes logo

Hermes

Use Builtwith MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Builtwith MCP with Atomic Agent

CLI logo

CLI

Use Builtwith MCP with CLI

Google ADK logo

Google ADK

Use Builtwith MCP with Google ADK

LangChain logo

LangChain

Use Builtwith MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Builtwith MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Builtwith MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Builtwith MCP with LlamaIndex

CrewAI logo

CrewAI

Use Builtwith MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Builtwith MCP with Pydantic AI

AutoGen logo

AutoGen

Use Builtwith MCP with AutoGen

FAQ

Frequently asked questions

With a standalone Builtwith MCP server, the agents and LLMs can only access a fixed set of Builtwith tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Builtwith and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Builtwith tools.

Yes, absolutely. You can configure which Builtwith scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Builtwith data and credentials are handled as safely as possible.

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