KitScout

Categories › Web & Browser › Web search engines & search APIs

BuiltWith

MCP serverGitHub-verified authorRemote● LiveAPI key needed

Official BuiltWith tools for website technologies, company research, relationships, and trends.

Install

Remote server: your requests and data go to api.builtwith.com. Claude Code: claude mcp add --transport http builtwith https://api.builtwith.com/mcp · Claude app: Settings → Connectors → Add custom connector.

What it can do (first 40)

The tools this server listed when we connected to it, in its own words.

  • mpp-catalog — Discover Stripe card MPP payments without an existing BuiltWith account or API key. The smallest purchase is $0.50 for 10 API lookups. Guest
  • mpp-purchase — Buy API lookup credits or a one-off plan with Stripe MPP card payment. No BuiltWith API key required. Start without paymentCredential to get
  • mpp-data — Use the temporary access_token returned by mpp-purchase without configuring an API key. Domain and change lookups spend one purchased API cr
  • domain-lookup — Returns the live web technologies used on the root domain name.
  • domain-api — Domain API JSON lookup for technology and metadata by domain.
  • domain-api-json — Raw Domain API JSON lookup for technology and metadata by domain.
  • change-api — Change API JSON lookup for technology additions and removals by domain. Supports one or more comma-separated domains and optional natural la
  • relationships-api — Relationships API JSON lookup for related websites by domain.
  • free-api — Free API JSON lookup for category/group counts by domain.
  • company-to-url — Company to URL API JSON lookup for domains from a company name.
  • tags-api — Tags API JSON lookup for related domains from IP or attributes.
  • recommendations-api — Recommendations API JSON lookup for technology recommendations by domain.
  • redirects-api — Redirects API JSON lookup for live and historical redirects by domain.
  • keywords-api — Keywords API JSON lookup for keyword data by domain.
  • keywords-search-api — Keyword Search API — find websites containing a specific keyword. Returns a list of matching domains and a NextOffset value for pagination.
  • trends-api — Trends API JSON lookup for technology trend data.
  • product-api — Product API JSON lookup for ecommerce product searches.
  • trust-api — Trust API JSON lookup for trust scoring by domain.
  • vat-api — VAT API JSON lookup for VAT, GST, CNPJ, ABN, and other publicly displayed company registration numbers associated with websites. Accepts 1–1
  • vat-types-api — List every company registration type that the VAT API may return, including its code, friendly name, and description. This public endpoint r
  • whoami-api — WhoAmI API JSON lookup for account limits, credit costs, privacy flags, max batch sizes, and endpoint inventory. Uses no API credits. Call t
  • usage-api — Usage API JSON lookup for current credit balance (used, purchased, remaining). Uses no API credits.
  • mcp-list-api — Search and browse remote MCP servers in the BuiltWith MCP registry (v2). Requires a BuiltWith API key supplied as a bearer token. Provide se
  • mcp-list-categories — List valid BuiltWith MCP registry category slugs, labels, and entry counts (v2). This public endpoint requires no API key and uses no API cr
  • list-api — List API JSON lookup for websites using a primary technology. Requires an active BuiltWith plan. OTHERTECHS are subordinate filters and do n
  • payment-balance — Check an existing account's API-credit balance through the saved-Stripe-method top-up service. This is not x402.
  • payment-config — Retrieve saved-Stripe-method account top-up limits, UTC monthly period, purchase increment, and idempotency rules. This is not x402.
  • payment-purchase — Charge an existing account's saved Stripe payment method and add account API credits. This is not x402. Requires the separately scoped Agent
  • vector-api — Search BuiltWith technologies and categories by text query using vector similarity. Returns ranked results with similarity scores (0–1), des
  • ask-api — Ask API lookup for natural language website list queries. OpenAI requests are served as preview results and do not commit full reports.
  • ask-api-json — Raw Ask API JSON lookup for app/internal use. OpenAI requests never send COMMIT=true.
  • x402-pricing — Show prepaid batch-credit pricing, x402 configuration, and List pass tiers. Optionally quote a credit quantity. Uses no payment.
  • x402-credit-purchase — Purchase a batch of at least 2,000 non-expiring BuiltWith API credits with one x402 payment. Returns a reusable secret credit key; provide a
  • x402-credit-balance — Check purchased, used, pending, and available credits for a reusable prepaid key. Uses no payment and consumes no credits.
  • x402-domain-lookup — Returns live web technologies for one domain using one prepaid credit.
  • x402-domain-api — Domain API technology and metadata lookup for one domain using one prepaid credit.
  • x402-domain-api-json — Raw Domain API JSON lookup for one or more comma-separated domains. Deducts prepaid credits from a reusable key.
  • x402-change-api — Technology additions and removals for one or more comma-separated domains. Deducts prepaid credits from a reusable key.
  • x402-relationships-api — Related websites for a domain. Deducts prepaid credits from a reusable key.
  • x402-company-to-url — Domains associated with a company name. Deducts prepaid credits from a reusable key.

KitScout test notes

Not tested by KitScout yet. When our harness runs it, pros, cons and the tasks we tried appear here, with the date and evidence.

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