BuiltWith

io.github.builtwith/builtwithVersion 2.1.0

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

Status

Responds428 msNov 14, 2026, 14:46 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:46 UTC
Latency: 428 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://api.builtwith.com/mcpResponds428 msNov 14, 2026, 14:46 UTC

No sign-in

Claude Code

claude mcp add --transport http builtwith https://api.builtwith.com/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: builtwith
Remote MCP server URL: https://api.builtwith.com/mcp

Cursor

{
  "mcpServers": {
    "builtwith": {
      "url": "https://api.builtwith.com/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"builtwith","type":"http","url":"https://api.builtwith.com/mcp"}'

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Tools

51 tools

Tools of BuiltWith
	Description		Read-only	Idempotent	Open world
`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 lookup for natural language website list queries. OpenAI requests are served as preview results and do not commit full reports.	No	No	Not declared	No
`ask-api-json`Raw Ask API JSON lookup for app/internal use. OpenAI requests never send COMMIT=true.	Raw Ask API JSON lookup for app/internal use. OpenAI requests never send COMMIT=true.	No	No	Not declared	No
`change-api`Change API JSON lookup for technology additions and removals by domain. Supports one or more comma-separated domains and optional natural language SINCE values such as 'last month'.	Change API JSON lookup for technology additions and removals by domain. Supports one or more comma-separated domains and optional natural language SINCE values such as 'last month'.	No	No	Not declared	No
`company-to-url`Company to URL API JSON lookup for domains from a company name.	Company to URL API JSON lookup for domains from a company name.	No	No	Not declared	No
`domain-api`Domain API JSON lookup for technology and metadata by domain.	Domain API JSON lookup for technology and metadata by domain.	No	No	Not declared	No
`domain-api-json`Raw Domain API JSON lookup for technology and metadata by domain.	Raw Domain API JSON lookup for technology and metadata by domain.	No	No	Not declared	No
`domain-lookup`Returns the live web technologies used on the root domain name.	Returns the live web technologies used on the root domain name.	No	No	Not declared	No
`free-api`Free API JSON lookup for category/group counts by domain.	Free API JSON lookup for category/group counts by domain.	No	No	Not declared	No
`keywords-api`Keywords API JSON lookup for keyword data by domain.	Keywords API JSON lookup for keyword data by domain.	No	No	Not declared	No
`keywords-search-api`Keyword Search API — find websites containing a specific keyword. Returns a list of matching domains and a NextOffset value for pagination. Costs API credits per query.	Keyword Search API — find websites containing a specific keyword. Returns a list of matching domains and a NextOffset value for pagination. Costs API credits per query.	No	No	Not declared	No
`list-api`List API JSON lookup for websites using a primary technology. Requires an active BuiltWith plan. OTHERTECHS are subordinate filters and do not consume additional primary technology report slots.	List API JSON lookup for websites using a primary technology. Requires an active BuiltWith plan. OTHERTECHS are subordinate filters and do not consume additional primary technology report slots.	No	No	Not declared	No
`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 search, category, or both. Returns up to 100 results per page as a JSON array of {Domain, Category, Description, Endpoints: [{Endpoint, AuthRequired, Tools: [{Name, Description}]}], first_detected, last_detected}, and preserves the complete API response including any fields added in the future. Uses no API credits.	Search and browse remote MCP servers in the BuiltWith MCP registry (v2). Requires a BuiltWith API key supplied as a bearer token. Provide search, category, or both. Returns up to 100 results per page as a JSON array of {Domain, Category, Description, Endpoints: [{Endpoint, AuthRequired, Tools: [{Name, Description}]}], first_detected, last_detected}, and preserves the complete API response including any fields added in the future. Uses no API credits.	No	No	Not declared	No
`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 credits.	List valid BuiltWith MCP registry category slugs, labels, and entry counts (v2). This public endpoint requires no API key and uses no API credits.	No	No	Not declared	No
`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 access tokens default to 24 hours; request up to 720 hours before paying. Lists require a plan.	Discover Stripe card MPP payments without an existing BuiltWith account or API key. The smallest purchase is $0.50 for 10 API lookups. Guest access tokens default to 24 hours; request up to 720 hours before paying. Lists require a plan.	Not declared	Yes	Not declared	Yes
`mpp-data`Use the temporary access_token returned by mpp-purchase without configuring an API key. Domain and change lookups spend one purchased API credit per domain. Lists require a purchased basic/pro/team plan, not lookup credits. Reuse the token for further calls until expiry or credit exhaustion.	Use the temporary access_token returned by mpp-purchase without configuring an API key. Domain and change lookups spend one purchased API credit per domain. Lists require a purchased basic/pro/team plan, not lookup credits. Reuse the token for further calls until expiry or credit exhaustion.	No	No	Not declared	No
`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 a 402 challenge; use an MPP-compatible Stripe wallet to authorize it, then retry the IDENTICAL purchase with paymentCredential. Keep the random UUID idempotencyKey secret and reuse it for retries/status, never for a different purchase. Success returns access_token for mpp-data or Bearer authentication on this MCP connection. This charges only the supplied SPT, never a saved card.	Buy API lookup credits or a one-off plan with Stripe MPP card payment. No BuiltWith API key required. Start without paymentCredential to get a 402 challenge; use an MPP-compatible Stripe wallet to authorize it, then retry the IDENTICAL purchase with paymentCredential. Keep the random UUID idempotencyKey secret and reuse it for retries/status, never for a different purchase. Success returns access_token for mpp-data or Bearer authentication on this MCP connection. This charges only the supplied SPT, never a saved card.	Yes	No	Not declared	Yes
`payment-balance`Check an existing account's API-credit balance through the saved-Stripe-method top-up service. This is not x402.	Check an existing account's API-credit balance through the saved-Stripe-method top-up service. This is not x402.	No	No	Not declared	No
`payment-config`Retrieve saved-Stripe-method account top-up limits, UTC monthly period, purchase increment, and idempotency rules. This is not x402.	Retrieve saved-Stripe-method account top-up limits, UTC monthly period, purchase increment, and idempotency rules. This is not x402.	No	No	Not declared	No
`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 Billing Key, fixed 2,000-credit increments, and an idempotency key.	Charge an existing account's saved Stripe payment method and add account API credits. This is not x402. Requires the separately scoped Agent Billing Key, fixed 2,000-credit increments, and an idempotency key.	Yes	No	Not declared	Yes
`product-api`Product API JSON lookup for ecommerce product searches.	Product API JSON lookup for ecommerce product searches.	No	No	Not declared	No
`recommendations-api`Recommendations API JSON lookup for technology recommendations by domain.	Recommendations API JSON lookup for technology recommendations by domain.	No	No	Not declared	No
`redirects-api`Redirects API JSON lookup for live and historical redirects by domain.	Redirects API JSON lookup for live and historical redirects by domain.	No	No	Not declared	No
`relationships-api`Relationships API JSON lookup for related websites by domain.	Relationships API JSON lookup for related websites by domain.	No	No	Not declared	No
`tags-api`Tags API JSON lookup for related domains from IP or attributes.	Tags API JSON lookup for related domains from IP or attributes.	No	No	Not declared	No
`trends-api`Trends API JSON lookup for technology trend data.	Trends API JSON lookup for technology trend data.	No	No	Not declared	No
`trust-api`Trust API JSON lookup for trust scoring by domain.	Trust API JSON lookup for trust scoring by domain.	No	No	Not declared	No
`usage-api`Usage API JSON lookup for current credit balance (used, purchased, remaining). Uses no API credits.	Usage API JSON lookup for current credit balance (used, purchased, remaining). Uses no API credits.	No	No	Not declared	No
`vat-api`VAT API JSON lookup for VAT, GST, CNPJ, ABN, and other publicly displayed company registration numbers associated with websites. Accepts 1–16 comma-separated domains. Uses 1 API credit only for each domain that returns registration data; domains with no results use no credits. Returned identifiers are found on public websites and are not verified or validated by BuiltWith.	VAT API JSON lookup for VAT, GST, CNPJ, ABN, and other publicly displayed company registration numbers associated with websites. Accepts 1–16 comma-separated domains. Uses 1 API credit only for each domain that returns registration data; domains with no results use no credits. Returned identifiers are found on public websites and are not verified or validated by BuiltWith.	No	No	Not declared	No
`vat-types-api`List every company registration type that the VAT API may return, including its code, friendly name, and description. This public endpoint requires no API key and uses no API credits.	List every company registration type that the VAT API may return, including its code, friendly name, and description. This public endpoint requires no API key and uses no API credits.	No	No	Not declared	No
`vector-api`Search BuiltWith technologies and categories by text query using vector similarity. Returns ranked results with similarity scores (0–1), descriptions, and category info. Useful for discovering what technologies match a concept or description (e.g. 'react framework', 'payment gateway', 'live chat'). Costs 1 API credit per query.	Search BuiltWith technologies and categories by text query using vector similarity. Returns ranked results with similarity scores (0–1), descriptions, and category info. Useful for discovering what technologies match a concept or description (e.g. 'react framework', 'payment gateway', 'live chat'). Costs 1 API credit per query.	No	No	Not declared	No
`whoami-api`WhoAmI API JSON lookup for account limits, credit costs, privacy flags, max batch sizes, and endpoint inventory. Uses no API credits. Call this first to make account-aware decisions.	WhoAmI API JSON lookup for account limits, credit costs, privacy flags, max batch sizes, and endpoint inventory. Uses no API credits. Call this first to make account-aware decisions.	No	No	Not declared	No
`x402-ask-api`Natural-language website query using one prepaid credit. Committed reports and pagination also require a Basic or Pro List pass.	Natural-language website query using one prepaid credit. Committed reports and pagination also require a Basic or Pro List pass.	No	No	Not declared	No
`x402-change-api`Technology additions and removals for one or more comma-separated domains. Deducts prepaid credits from a reusable key.	Technology additions and removals for one or more comma-separated domains. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-company-to-url`Domains associated with a company name. Deducts prepaid credits from a reusable key.	Domains associated with a company name. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-credit-balance`Check purchased, used, pending, and available credits for a reusable prepaid key. Uses no payment and consumes no credits.	Check purchased, used, pending, and available credits for a reusable prepaid key. Uses no payment and consumes no credits.	No	No	Not declared	No
`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 an existing key to top it up.	Purchase a batch of at least 2,000 non-expiring BuiltWith API credits with one x402 payment. Returns a reusable secret credit key; provide an existing key to top it up.	Yes	No	Not declared	Yes
`x402-domain-api`Domain API technology and metadata lookup for one domain using one prepaid credit.	Domain API technology and metadata lookup for one domain using one prepaid credit.	No	No	Not declared	No
`x402-domain-api-json`Raw Domain API JSON lookup for one or more comma-separated domains. Deducts prepaid credits from a reusable key.	Raw Domain API JSON lookup for one or more comma-separated domains. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-domain-lookup`Returns live web technologies for one domain using one prepaid credit.	Returns live web technologies for one domain using one prepaid credit.	No	No	Not declared	No
`x402-keywords-api`Keyword data for a domain. Deducts prepaid credits from a reusable key.	Keyword data for a domain. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-keywords-search-api`Search websites containing a keyword with a valid x402 List pass.	Search websites containing a keyword with a valid x402 List pass.	No	No	Not declared	No
`x402-list-api`List websites using a primary technology with a valid x402 List pass. OTHERTECHS are subordinate filters and never consume additional technology report slots.	List websites using a primary technology with a valid x402 List pass. OTHERTECHS are subordinate filters and never consume additional technology report slots.	No	No	Not declared	No
`x402-list-pass-purchase`Purchase a 30-day Basic ($295, 2 technology and 2 keyword reports) or Pro ($495, 50 and 50) List API pass with Base USDC.	Purchase a 30-day Basic ($295, 2 technology and 2 keyword reports) or Pro ($495, 50 and 50) List API pass with Base USDC.	Yes	No	Not declared	Yes
`x402-pricing`Show prepaid batch-credit pricing, x402 configuration, and List pass tiers. Optionally quote a credit quantity. Uses no payment.	Show prepaid batch-credit pricing, x402 configuration, and List pass tiers. Optionally quote a credit quantity. Uses no payment.	No	No	Not declared	No
`x402-recommendations-api`Technology recommendations for a domain. Deducts prepaid credits from a reusable key.	Technology recommendations for a domain. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-redirects-api`Live and historical redirects for a domain. Deducts prepaid credits from a reusable key.	Live and historical redirects for a domain. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-relationships-api`Related websites for a domain. Deducts prepaid credits from a reusable key.	Related websites for a domain. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-tags-api`Related domains from an IP address or attributes. Deducts prepaid credits from a reusable key.	Related domains from an IP address or attributes. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-trust-api`Trust score for a domain. Deducts prepaid credits from a reusable key.	Trust score for a domain. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-vat-api`Public company registration identifiers for one to sixteen domains. Deducts prepaid credits from a reusable key.	Public company registration identifiers for one to sixteen domains. Deducts prepaid credits from a reusable key.	No	No	Not declared	No
`x402-vector-api`Vector similarity search across BuiltWith technologies and categories. Deducts prepaid credits from a reusable key.	Vector similarity search across BuiltWith technologies and categories. Deducts prepaid credits from a reusable key.	No	No	Not declared	No

Details

Registry status: Active
Published: Nov 10, 2026
Updated: Nov 10, 2026
Website: https://api.builtwith.com/⁠ (opens in a new tab)
Repository: https://github.com/builtwith/builtwith-mcp⁠ (opens in a new tab)
Categories (suggested): Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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