builtwith.com

•

API Key

About BuiltWith

BuiltWith crawls and indexes the technology stacks of hundreds of millions of websites, allowing users to look up what CMS, analytics, advertising, payment, or CDN technology any site uses. It is used by sales teams to prospect for leads using specific technology criteria (e.g., 'find all Shopify stores in the UK'), by marketers for competitive research, and by developers for market analysis. BuiltWith underwent a significant price increase in 2026, with its Basic plan rising from ~$50/month to $295/month.

AI Agent Use Cases

- Technology lookup for any domain showing full stack (CMS, analytics, CDN, payments, etc.)

- Lead generation by technology: build prospect lists filtered by the tech stack they use

- Historical technology adoption data showing when sites added or dropped specific tools

- Market share trends and technology adoption charts across millions of sites

- API access for programmatic queries (Pro plan and above)

- Free single-site lookups via website or Chrome extension

Available Actions

These are the specific actions that AI agents can perform with this tool

Domain Information

2 inputs

Retrieve the technology information and metadata for a given website.

Inputs

KEY

API key provided by BuiltWith.

LOOKUP

The domain name of the website for which technology information is being requested.

Fetch Domain Info

2 inputs

Fetch comprehensive technology usage information for a given domain using the BuiltWith Domain Live API.

Inputs

KEY

API key for authentication, necessary to authorize the request.

LOOKUP

The domain or subdomain to look up technology usage information for.

Get Domain Technology Profile

2 inputs

Fetch technology profile data for a given domain in JSON format.

Inputs

KEY

Your API key for authentication. You must login or sign up to obtain this key.

LOOKUP

The domain for which to retrieve the technology profile.

Get Websites Using Technology

7 inputs

Get a list of websites using a specific web technology

Inputs

KEY

Your API key for authentication. Obtain from BuiltWith website.

TECH

Name of the technology you are interested in. Replace spaces with dashes.

META

Request metadata such as names, titles, social links, etc. Add META=yes to the request for this data.

COUNTRY

ISO country code for filtering results. Use comma for multiple countries.

OFFSET

Used for pagination; get the next page of results.

SINCE

Filter results for websites using the technology since a certain date or time period.

ALL

Return historical data of sites. Cannot be combined with SINCE.

List Websites by Technology

7 inputs

Get a list of websites using specific technology with optional meta data

Inputs

KEY

Your unique API key for accessing the BuiltWith API.

TECH

Name of the technology. Spaces should be replaced with dashes.

META

Include additional metadata in the results.

COUNTRY

Filter results by country TLD extension or country address. Use comma for multiple countries.

OFFSET

Value from NextOffset in response to get the next page of results.

SINCE

Filter results to sites using the technology since a certain time.

ALL

Include all sites including historical data.

Product Data

4 inputs

Fetch product data of 'Adidas Yeezy' from the BuiltWith API

Inputs

KEY

Your API key for authenticating the request.

QUERY

The product name you want to search for.

LIMIT

The maximum number of shops to return in the response. Defaults to 50.

PAGE

The page number for paginated results. Defaults to 0 (first page).

Website Keywords Retrieval

2 inputs

Retrieve keywords associated with a website domain using an API call

Inputs

KEY

The user's API key to authenticate and authorize the request

LOOKUP

The domain name of the website to retrieve keywords for; can be a single domain or up to 16 domains as a CSV

Website Redirects API

2 inputs

Retrieve live and historical redirects for a specified root domain

Inputs

KEY

The API key obtained from BuiltWith after logging in or signing up.

LOOKUP

The root domain to look up for redirects, such as example.com.

Website Trust Check

4 inputs

Fetch detailed trustworthiness analysis of a specified domain using BuiltWith Trust API

Inputs

KEY

Your API key, necessary for authenticating requests.

LOOKUP

The domain you want to analyze for trustworthiness.

LIVE

Perform a live lookup for a more detailed response. Use 'yes' to enable.

WORDS

Words to check in the website's content, affecting the stopwords analysis.

About BuiltWith

AI Agent Use Cases

- Technology lookup for any domain showing full stack (CMS, analytics, CDN, payments, etc.)

- Lead generation by technology: build prospect lists filtered by the tech stack they use

- Historical technology adoption data showing when sites added or dropped specific tools

- Market share trends and technology adoption charts across millions of sites

- API access for programmatic queries (Pro plan and above)

- Free single-site lookups via website or Chrome extension

Available Actions

These are the specific actions that AI agents can perform with this tool

Domain Information

2 inputs

Retrieve the technology information and metadata for a given website.

Inputs

KEY

API key provided by BuiltWith.

LOOKUP

The domain name of the website for which technology information is being requested.

Fetch Domain Info

2 inputs

Fetch comprehensive technology usage information for a given domain using the BuiltWith Domain Live API.

Inputs

KEY

API key for authentication, necessary to authorize the request.

LOOKUP

The domain or subdomain to look up technology usage information for.

Get Domain Technology Profile

2 inputs

Fetch technology profile data for a given domain in JSON format.

Inputs

KEY

Your API key for authentication. You must login or sign up to obtain this key.

LOOKUP

The domain for which to retrieve the technology profile.

Get Websites Using Technology

7 inputs

Get a list of websites using a specific web technology

Inputs

KEY

Your API key for authentication. Obtain from BuiltWith website.

TECH

Name of the technology you are interested in. Replace spaces with dashes.

META

Request metadata such as names, titles, social links, etc. Add META=yes to the request for this data.

COUNTRY

ISO country code for filtering results. Use comma for multiple countries.

OFFSET

Used for pagination; get the next page of results.

SINCE

Filter results for websites using the technology since a certain date or time period.

ALL

Return historical data of sites. Cannot be combined with SINCE.

List Websites by Technology

7 inputs

Get a list of websites using specific technology with optional meta data

Inputs

KEY

Your unique API key for accessing the BuiltWith API.

TECH

Name of the technology. Spaces should be replaced with dashes.

META

Include additional metadata in the results.

COUNTRY

Filter results by country TLD extension or country address. Use comma for multiple countries.

OFFSET

Value from NextOffset in response to get the next page of results.

SINCE

Filter results to sites using the technology since a certain time.

ALL

Include all sites including historical data.

Product Data

4 inputs

Fetch product data of 'Adidas Yeezy' from the BuiltWith API

Inputs

KEY

Your API key for authenticating the request.

QUERY

The product name you want to search for.

LIMIT

The maximum number of shops to return in the response. Defaults to 50.

PAGE

The page number for paginated results. Defaults to 0 (first page).

Website Keywords Retrieval

2 inputs

Retrieve keywords associated with a website domain using an API call

Inputs

KEY

The user's API key to authenticate and authorize the request

LOOKUP

The domain name of the website to retrieve keywords for; can be a single domain or up to 16 domains as a CSV

Website Redirects API

2 inputs

Retrieve live and historical redirects for a specified root domain

Inputs

KEY

The API key obtained from BuiltWith after logging in or signing up.

LOOKUP

The root domain to look up for redirects, such as example.com.

Website Trust Check

4 inputs

Fetch detailed trustworthiness analysis of a specified domain using BuiltWith Trust API

Inputs

KEY

Your API key, necessary for authenticating requests.

LOOKUP

The domain you want to analyze for trustworthiness.

LIVE

Perform a live lookup for a more detailed response. Use 'yes' to enable.

WORDS

Words to check in the website's content, affecting the stopwords analysis.