Domain Live API

BuiltWith Domain Live API

Live technology usage for websites


The BuiltWith Domain Live API does a comprehensive technology search across the domain you provide us, this includes indexing internal pages, subdomains, tag managers, ads.txt and technology versions on the site live.

The general access method is as follows -[YOUR KEY]&LOOKUP=[DOMAIN]

Domain Live Explained

Domain API vs. Domain Live API

The Domain API uses our database to provide current and historical technology usage information. Our database is built over time - the last time we fully indexed the site can be between 1 minute to 30 days depending on the quality of the website. See our Data Coverage for more information. Our systems also determine the level of detail we put into indexing a website based on what is initially returned.

The Domain Live API does an entire site lookup on the Domain/Sub Domain or Url you provide almost immediately and does not discriminate against the level of detail we put into providing the lookup based on the initial data returned.


You must provide your API key in each lookup. See the examples for how this works.

Login or Create a Free Account to get your API key.

Get Domain Example

JSON Get Domain[YOUR KEY]&

High Throughput

Domain Live is a low speed endpoint due to us relying on third party website loading. It typically takes around 8 to 16 seconds to bring back a profile. For much higher throughput we recommend the Dedicated Domain Live API endpoint.


GET Request Parameters

Name Examples Required
KEY Login or Create a Free Account to get your API key.
This is your key, use this for lookups.
Escape paths and parameters for full urls

How different LOOKUPS Work
Root domains (i.e. - index root domain, internal pages and subdomains
Subdomains (i.e. - index subdomain, subdomain internal pages
Internal URL (i.e. - index specific URL only

Response Object

Lookups are not responsive - they take for as long as it takes us to index the homepage, internal pages and subdomains of the site.

DLv2 Schema

You can download the DLv2 JSON Schema with documentation here - dlv2.schema.json

Code Examples

JSON/XML have integrations in all modern programming languages. Here's some StackOverflow topics for various languages - Python, C#, Java, PHP, C++, TSQL and Ruby.

Error Codes

Note error messages in this format cannot be guaranteed, your implementation should also consider non-200 response codes as errors. The Lookup property will be null (json) or not provided (xml) if the error is server related. View all potential well-formed error codes.

Terms of Use

Our standard terms cover the use all of our APIs.

In general, you can use the API to enhance your product in many ways. The only limitation is you cannot resell the data as-is or provide duplicate functionality to and its associated services.