Directory/MCP Directory/BuiltWith
First-party MCP at api.builtwith.com/mcp, hosted by the vendor, or self-host it from BuiltWith's open-source repo on GitHub.
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Completed an MCP handshake without a login. Some vendors still ask for an API key inside the tools themselves.
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| Tool | Type | What it does |
|---|---|---|
mpp-catalog | Read | Discover Stripe card MPP payments without an existing BuiltWith account or API key. |
mpp-purchase | Write | Buy API lookup credits or a one-off plan with Stripe MPP card payment. |
mpp-data | Write | Use the temporary access_token returned by mpp-purchase without configuring an API key. |
domain-lookup | Write | Returns the live web technologies used on the root domain name. |
domain-api | Write | Domain API JSON lookup for technology and metadata by domain. |
domain-api-json | Write | Raw Domain API JSON lookup for technology and metadata by domain. |
change-api | Write | Change API JSON lookup for technology additions and removals by domain. |
relationships-api | Write | Relationships API JSON lookup for related websites by domain. |
free-api | Write | Free API JSON lookup for category/group counts by domain. |
company-to-url | Write | Company to URL API JSON lookup for domains from a company name. |
tags-api | Write | Tags API JSON lookup for related domains from IP or attributes. |
recommendations-api | Write | Recommendations API JSON lookup for technology recommendations by domain. |
redirects-api | Write | Redirects API JSON lookup for live and historical redirects by domain. |
keywords-api | Write | Keywords API JSON lookup for keyword data by domain. |
keywords-search-api | Write | Keyword Search API — find websites containing a specific keyword. |
trends-api | Write | Trends API JSON lookup for technology trend data. |
product-api | Write | Product API JSON lookup for ecommerce product searches. |
trust-api | Write | Trust API JSON lookup for trust scoring by domain. |
vat-api | Write | VAT API JSON lookup for VAT, GST, CNPJ, ABN, and other publicly displayed company registration numbers associated with websites. |
vat-types-api | Write | List every company registration type that the VAT API may return, including its code, friendly name, and description. |
whoami-api | Write | WhoAmI API JSON lookup for account limits, credit costs, privacy flags, max batch sizes, and endpoint inventory. |
usage-api | Write | Usage API JSON lookup for current credit balance (used, purchased, remaining). |
mcp-list-api | Write | Search and browse remote MCP servers in the BuiltWith MCP registry (v2). |
mcp-list-categories | Write | List valid BuiltWith MCP registry category slugs, labels, and entry counts (v2). |
list-api | Write | List API JSON lookup for websites using a primary technology. |
payment-balance | Write | Check an existing account's API-credit balance through the saved-Stripe-method top-up service. |
payment-config | Write | Retrieve saved-Stripe-method account top-up limits, UTC monthly period, purchase increment, and idempotency rules. |
payment-purchase | Write | Charge an existing account's saved Stripe payment method and add account API credits. |
vector-api | Write | Search BuiltWith technologies and categories by text query using vector similarity. |
ask-api | Write | Ask API lookup for natural language website list queries. |
ask-api-json | Write | Raw Ask API JSON lookup for app/internal use. |
x402-pricing | Write | Show prepaid batch-credit pricing, x402 configuration, and List pass tiers. |
x402-credit-purchase | Write | Purchase a batch of at least 2,000 non-expiring BuiltWith API credits with one x402 payment. |
x402-credit-balance | Write | Check purchased, used, pending, and available credits for a reusable prepaid key. |
x402-domain-lookup | Write | Returns live web technologies for one domain using one prepaid credit. |
x402-domain-api | Write | Domain API technology and metadata lookup for one domain using one prepaid credit. |
x402-domain-api-json | Write | Raw Domain API JSON lookup for one or more comma-separated domains. |
x402-change-api | Write | Technology additions and removals for one or more comma-separated domains. |
x402-relationships-api | Write | Related websites for a domain. |
x402-company-to-url | Write | Domains associated with a company name. |
x402-tags-api | Write | Related domains from an IP address or attributes. |
x402-recommendations-api | Write | Technology recommendations for a domain. |
x402-redirects-api | Write | Live and historical redirects for a domain. |
x402-keywords-api | Write | Keyword data for a domain. |
x402-trust-api | Write | Trust score for a domain. |
x402-vat-api | Write | Public company registration identifiers for one to sixteen domains. |
x402-vector-api | Write | Vector similarity search across BuiltWith technologies and categories. |
x402-list-pass-purchase | Write | Purchase a 30-day Basic ($295, 2 technology and 2 keyword reports) or Pro ($495, 50 and 50) List API pass with Base USDC. |
x402-list-api | Write | List websites using a primary technology with a valid x402 List pass. |
x402-keywords-search-api | Write | Search websites containing a keyword with a valid x402 List pass. |
x402-ask-api | Write | Natural-language website query using one prepaid credit. |
Read straight from the server's own tool list on Oct 16, 2026. Type comes from the server's own read-only hints where it gives them, otherwise from the tool name. Keep Write tools on approval.
First-party MCP at api.builtwith.com/mcp, hosted by the vendor, or self-host it from BuiltWith's open-source repo on GitHub. It uses your own BuiltWith API key and exposes domain lookups, technology lists, change history, trends, company-to-domain matching and a plain-English list search.
Read the full BuiltWith review: pricing, pros and cons, alternatives
Observed means our own checker saw it at the server URL, without signing in. Nothing here is copied from the vendor's marketing. Server details refresh weekly; last refreshed Oct 16, 2026.
The server answered our check without asking for a login, so it may work as soon as it is added. Some tools still ask you to sign in before they share account data.
https://api.builtwith.com/mcpOn Team and Enterprise plans an owner adds it first under Organization settings.
claude mcp add --transport http 'builtwith' 'https://api.builtwith.com/mcp'/mcp to check it shows as connected.{"mcpServers":{"builtwith":{"url":"https://api.builtwith.com/mcp"}}}Steps follow Anthropic's guides to custom connectors and MCP in Claude Code. Menu names change, so check there if a label looks different. Start read only and keep sends, writes and credit spend on approval.
Yes. BuiltWith runs its own official MCP server at https://api.builtwith.com/mcp, so an AI assistant such as Claude, ChatGPT or Cursor can work inside BuiltWith with your own account and permissions.
The server URL is https://api.builtwith.com/mcp. Paste it into your AI app as a custom connector or remote MCP server.
Our check completed without a login, though BuiltWith may still ask you to sign in before it shares account data.
At our last check, 5 minutes ago, it was live. Completed an MCP handshake without a login. Some vendors still ask for an API key inside the tools themselves.
An official server only lets the assistant see and do what your own BuiltWith account allows. Start read only, keep anything that sends, writes or spends credits on approval, and check whether your admin needs to approve the connection.
From the Work Insiders directory, where BuiltWith's MCP server is checked against BuiltWith's own documentation. Status is checked once a day, so it can lag a real outage by up to a day. Vendors cannot pay to be listed here. How we make money.
