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BuiltWith API

JSON and XML Web Technology Lookups

$ curl -i "http://api.builtwith.com/v1/api.json?KEY=[key]&LOOKUP=twitter.com"
HTTP/1.1 200 OK Content-Type: text/json; charset=utf-8 Content-Length: 4641 {"Domain":"twitter.com","FullUrl":"twitter.com","ProfileUrl":"http:\/\/builtwith.com?twitter.com","Technologies":[{"Description":"The DOCTYPE is a required preamble for HTML5 websites.","Link":"http:\/\/dev.w3.org\/html5\/spec\/syntax.html#the-doctype","Name":"HTML5 DocType","Tag":"docinfo"},{"Description":"[url] uses conditional comments that are supported by Microsoft Internet Explorer. They allow web developers to show or hide HTML code based on the version of the viewer's browser.","Link":"http:\/\/www.quirksmode.org\/css\/condcom.html","Name":"Conditional Comments","Tag":"docinfo"},{"Description":"UTF-8 (8-bit UCS\/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.","Link":"http:\/\/en.wikipedia.org\/wiki\/UTF-8","Name":"UTF-8","Tag":"encoding"},{"Description":"SEO Title","Link":"","Name":"SEO_TITLE","Tag":"seo_title"},{"Description":"Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.","Link":"http:\/\/blogs.msdn.com\/ie\/archive\/2008\/06\/10\/introducing-ie-emulateie7.aspx","Name":"X-UA-Compatible","Tag":"docinfo"},{"Description":"Frames Google Chrome window into Internet Explorer for HTML 5 compatibility.","Link":"http:\/\/code.google.com\/chrome\/chromeframe\/","Name":"Google Chrome IE Frame","Tag":"docinfo"},{"Description":"JavaScript is a scripting language most often used for client-side web development. Its proper name is ECMAScript, though \"JavaScript\" is much more commonly used. [url] uses JavaScript.","Link":"http:\/\/en.wikipedia.org\/wiki\/JavaScript","Name":"Javascript","Tag":"docinfo"},{"Description":"The description attribute provides a concise explanation of the page content.","Link":"http:\/\/en.wikipedia.org\/wiki\/Meta_tag#The_description_attribute","Name":"Meta Description","Tag":"docinfo"},{"Description":"SEO Meta Description","Link":"http:\/\/none.com","Name":"SEO_META_DESCRIPTION","Tag":"seo_meta"},{"Description":"This page contains content sourced from the Twitter CDN, either by the use of Widgets or linking to image content on twimg.com currently hosted by Akamai and Amazon.","Link":"http:\/\/twitter.com","Name":"Twitter CDN","Tag":"cdn"},{"Description":"Public specification of a preferred URL for a page allows search engines to understand the original location for content.","Link":"http:\/\/googlewebmastercentral.blogspot.com\/2009\/02\/specify-your-canonical.html","Name":"Canonical Content Tag","Tag":"docinfo"},{"Description":"The OpenSearch description document format can be used to describe a search engine so that it can be used by search client applications.","Link":"http:\/\/www.opensearch.org\/Home","Name":"OpenSearch","Tag":"docinfo"},{"Description":"Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML ","Link":"http:\/\/en.wikipedia.org\/wiki\/Cascading_Style_Sheets","Name":"Cascading Style Sheets","Tag":"docinfo"},{"Description":"Ruby on Rails is an open-source web framework that is optimized for programmer happiness and sustainable productivity. Note that Ruby on Rails has two detection techniques and this is one of them.","Link":"http:\/\/www.rubyonrails.org\/","Name":"Ruby on Rails Token","Tag":"framework"},{"Description":"SEO H1","Link":"","Name":"SEO_H1","Tag":"seo_headers"},{"Description":"SEO H2","Link":"","Name":"SEO_H2","Tag":"seo_headers"},{"Description":"JQuery is a fast, concise, JavaScript Library that simplifies how you traverse HTML documents, handle events, perform animations, and add Ajax interactions to your web pages. jQuery is designed to change the way that you write JavaScript.","Link":"http:\/\/jquery.com","Name":"jQuery","Tag":"javascript"},{"Description":"SWFObject is a small Javascript file used for embedding Adobe Flash content. The script can detect the Flash plug-in in all major web browsers (on Mac and PC) and is designed to make embedding Flash movies as easy as possible.","Link":"http:\/\/blog.deconcept.com\/swfobject\/","Name":"SWFObject","Tag":"javascript"},{"Description":"The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a frame or iframe. Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.","Link":"https:\/\/developer.mozilla.org\/en\/the_x-frame-options_response_header","Name":"X-Frame-Options","Tag":"docinfo"}],"Title":""}

About

The BuiltWith.com API provides XML and JSON access to the technology information of a website which includes all technical information as found on lookups at BuiltWith.com.

Your API Key

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API Plans

We offer PayPal as a checkout option for API purchases. If you can't use paypal contact us.

Basic

$79

Low API Usage Users
2,000 Lookups Per Month
Commercial Use Allowed
Non-Cached Lookups
Billed Monthly

Premium

$349

Standard API package
10,000 Lookups Per Month
Commercial Use Allowed
Non-Cached Lookups
Billed Monthly

Enterprise

$749

High-usage tier
100,000 Lookups Per Month
Commercial Use Allowed
Non-Cached Lookups
Billed Monthly

Subscriptions can be cancelled at any time. We also provide an attribution free version for users of the API who use it publically for non-competing services. Contact Us for more information.

API Documentation

You need a basic understanding of consuming XML or JSON structured data to use the BuiltWith API.

Endpoints

There's two endpoints that send either XML or JSON data back, both are accessed with GET requests.

XML Lookup endpoints

http://api.builtwith.com/v1/api.xml

JSON Lookup endpoints

http://api.builtwith.com/v1/api.json

Parameters

ParamExamplesComments
KEY 00000000-0000-0000-0000-000000000000 Your unique API key.
LOOKUP cnn.com
example.com%3Ftest
The address of the page you want to look up. Escape this string if it contains parameters.
CACHE
(optional)
false If false the lookup will visit the URL to get a new profile. This is slower than using the cache which is no more than 14 days old.

Examples

Lookup twitter.com and return the results as JSON -

http://api.builtwith.com/v1/api.json?KEY=00000000-0000-0000-0000-000000000000&LOOKUP=twitter.com

Lookup cnn.com/?param=true and return the results as XML -

http://api.builtwith.com/v1/api.xml?KEY=00000000-0000-0000-0000-000000000000&LOOKUP=cnn.com/%3Fparam%3Dtrue

Lookup reddit.com and return the results as JSON without using cached results -

http://api.builtwith.com/v1/api.xml?KEY=00000000-0000-0000-0000-000000000000&LOOKUP=reddit.com&CACHE=false

Help

If you have any other questions or need any help drop us an email at support@builtwith.com.