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BuiltWith

Authentication Type: API Key
Description: Technology intelligence for the web — detect what technologies any domain uses, including frameworks, analytics, advertising platforms, CMS systems, hosting providers, and more.

Authentication

To authenticate, you'll need a BuiltWith API key. Sign up and obtain your key at builtwith.com/free-signup.

Required Credentials:

  • apiKey — your BuiltWith API key

Domain Intelligence

Identify the complete technology stack running on any domain, with per-path breakdowns and detection history.

Domain Lookup

Detect technologies used on one or more domains. Returns a breakdown of all detected technologies per path, with categories, tags, first/last detection timestamps, and optional company metadata.

Operation Type: Query (Read)

Parameters:

  • domains array of strings (required): One or more domains to analyze (e.g. ["example.com", "acme.io"]). Maximum 16 domains per request.
  • liveOnly boolean (optional, default: false): When true, returns only technologies currently active on the site.
  • noMeta boolean (optional, default: false): When true, excludes company metadata (improves performance).
  • noPii boolean (optional, default: true): When true, removes personal names and email addresses from results.

Returns:

  • results array of objects: One result object per domain queried
    • domain string: The domain that was looked up
    • paths array of objects: Technology data broken down by path
      • domain string: The domain for this path
      • url string (nullable): The full URL of the path
      • subDomain string (nullable): The subdomain if applicable
      • technologies array of objects: Technologies detected on this path
        • name string: Technology name (e.g. "React", "Google Analytics")
        • description string (nullable): Description of the technology
        • link string (nullable): URL for more information about the technology
        • tag string (nullable): Technology category tag
        • categories array of objects: Category classifications
          • name string: Category name (e.g. "JavaScript Frameworks")
          • tag string: Category tag identifier
        • firstDetected number (nullable): Unix timestamp of first detection
        • lastDetected number (nullable): Unix timestamp of most recent detection
    • companyName string (nullable): Company name from metadata
    • country string (nullable): Company country from metadata
    • firstIndexed number (nullable): Unix timestamp when BuiltWith first indexed the domain
    • lastIndexed number (nullable): Unix timestamp of the most recent index
    • estimatedMonthlySpend number (nullable): Estimated monthly USD spend on technology

Example Usage:

{
  "domains": ["shopify.com", "stripe.com"],
  "liveOnly": true,
  "noMeta": false,
  "noPii": true
}

Example Use Cases:

  • Identify prospects using a competitor's product for competitive displacement campaigns
  • Score leads based on their current technology stack (e.g. filter for companies using Salesforce)
  • Research what analytics, ad platforms, or CDNs a set of target accounts uses
  • Enrich company records with technology profile data

Common Use Cases

Lead Qualification:

  • Filter prospects by specific technologies they use (e.g. "uses HubSpot" or "uses Shopify")
  • Score accounts by technology maturity or spend signals
  • Identify accounts ready for migration or upgrade

Competitive Intelligence:

  • Monitor which domains are using competitor products
  • Track technology adoption trends across target segments

Enrichment & Research:

  • Append technology stack data to CRM records
  • Research a domain's tech stack before a sales call or demo