BuiltWith API
JSON APIs for Web, Data & AI Systems
Provides access to the current and historical technology information of a website and additional meta data where available.
JSON results of technology additions and removals for domains, including categories, importance and AI-generated business context.
XML,JSON, CSV and TSV results of relationships between websites that show what sites are linked together, by what and for how long.
Provides XML and JSON access to lists of websites using particular web technologies across the entire internet.
Natural language website list lookups. Ask for audiences like Magento websites in Spain and return sample or committed paged results.
Search and browse the BuiltWith registry of remote MCP servers by keyword or category. Free to use, rate limited to 1 request per second.
Provides VAT, GST, CNPJ and other available company registration numbers for websites.
Real-time WebSocket feed of technology detections. Subscribe to specific technologies or receive all new detections.
Provides last updated and counts for technology groups and categories for websites.
Get domain names from lists of company names you supply to us.
XML and JSON lists of related domains to IPs and other site attributes.
The technology recommendations for websites based on other sites with similar technology profiles.
Live and historical website redirects data.
Lists of websites using specific keywords.
Search for websites containing specific keywords.
Search technologies and categories by text query using vector similarity.
XML and JSON access to the technology trends data found on BuiltWith Technology Trends.
Use the Product API to find websites selling certain eCommerce products.
Use the Trust API to determine how much a website can be trusted. Useful for fraud detection.
Drop a bulk list of domains into the frontend or programmatically for fast bulk API access.
Use BuiltWith API endpoints as MCP tools with an API key, or buy prepaid credit batches with x402 and use one reusable key for lookups.
Pay per lookup with USDC on Base, or buy reusable MCP lookup units. No BuiltWith account or API key required.
For existing accounts: charge a saved Stripe payment method to add account API credits within configured limits. This is not x402.
Get detailed live technology usage profiles for websites with your own dedicated end points that provide higher throughput.
BuiltWith Datasets provide mass access to Internet Technology usage information from 2000 to today.
Manage larger technology based datasets in datalakes. We can create custom data products for you based on your requirements or use our datasets product
Non-interactive, scriptable CLI for the BuiltWith API — designed for automation, CI/CD pipelines, and AI agent consumption.
A terminal-based user interface for exploring the BuiltWith API. Runs in any terminal — Windows CMD, PowerShell, or Bash.
Lots of code examples for how to use the BuiltWith API with platforms like Node and Python. As well as some full implementations like Live Feed to Salesforce
Explore our bot experiment results and see how BuiltWith consistently identifies websites faster than anyone else.