# BuiltWith — MCP server on mcp.ai
> Connect your BuiltWith account and use 11 tools for analytics straight from your AI agent. Connect with your own API key. BuiltWith is a web technology profiler that provides insights into the technologies used by websites, including analytics, hosting, and content management systems.

By: mcp.ai · official
Page: https://mcp.ai/builtwith

## Connect (MCP protocol)
Remote MCP endpoint (HTTP, streamable): https://api.mcp.ai/p_builtwith?ms=1787291520000
Add it as a custom/remote MCP connector, then authenticate when prompted.

## REST API (no MCP client required)
Every tool is also a REST endpoint, authed with a workspace API key.
Discover: GET https://api.mcp.ai/api/builtwith/_endpoints   # public; lists every endpoint
Call:     POST https://api.mcp.ai/api/builtwith/<endpoint>
  Authorization: Bearer sk_live_…   # create one at https://mcp.ai/settings/api-keys
  Content-Type: application/json
  Body: { …args }   →   { "ok": true, "tool": "<id>", "result": { … } }

## Developer docs
How to use (MCP or REST), markdown: https://mcp.ai/builtwith/skill.md
Postman collection (v2.1): https://mcp.ai/builtwith/postman.json

## Tools
- builtwith_create_domain_list_file(format?: string, domains: string[], file_name?: string) — Tool to create a TXT or ZIP file from a list of domains. Use when preparing a domain list for bulk or firehose lookups.
- builtwith_datasets_lookup(TECH: string) — Tool to access mass Internet technology usage information from 2000 to today. Use when you need historical technology usage trends for a domain.
- builtwith_domain_api_lookup(nopii?: string, trust?: string, hidedl?: string, lookup: string, noattr?: string, nolive?: string, nometa?: string, hidetext?: string, liveonly?: string) — Tool to retrieve current and historical technology information of a website. Use after confirming the domain to lookup.
- builtwith_financial_api_lookup(lookup: string) — Tool to fetch financial data for a domain. Use when you need company financials for US or UK registered websites.
- builtwith_free_api_lookup(LOOKUP: string) — Tool to access last updated dates and counts for technology groups and categories for websites. Use when you need a snapshot of technology usage timing for a domain.
- builtwith_lists_api_get_list(all?: string, meta?: string, tech: string, since?: string, offset?: string, country?: string) — Tool to retrieve a list of websites using a specific technology. Use when you want to find sites leveraging a particular tech.
- builtwith_mcp_api_lookup(domain: string) — DEPRECATED: Use BUILTWITH_DOMAIN_API_LOOKUP instead. Tool to query live web technologies for a root domain. Use after confirming a valid domain name.
- builtwith_product_api_lookup(PAGE?: integer, LIMIT?: integer, QUERY: string) — Tool to find websites selling specific eCommerce products. Use when you need to discover online retailers offering a given product name or query a domain's product listings (e.g., 'dom:jbhifi.com.au')
- builtwith_recommendations_api_lookup(lookup: string) — Tool to generate a list of websites with similar technology profiles. Use when you need technology recommendations for a given domain lookup.
- builtwith_redirects_api_lookup(LOOKUP: string) — Tool to retrieve live and historical redirects for a website. Use after confirming the exact root domain to gather inbound and outbound redirect timelines.
- builtwith_social_api_lookup(lookup: string) — Tool to retrieve domains associated with social media profile URLs. Use when you need to map social profiles to root domains.

## Example prompts
- "What can I do in BuiltWith?"
- "Show me a summary of my BuiltWith account"

## Links
Docs: https://mcp.ai/docs/mcps/builtwith
Website: https://mcp.ai/mcps/builtwith