latestOpenAPI 3.1.02026-08-0814024.5 KB

128fc6ec8424

Company Research

Find websites related to a domain

Find domains related through shared identifiers, infrastructure, analytics, ownership signals, and other BuiltWith relationship evidence.

post/agent/relationships

domainstring required

Domain name to research, for example example.com. Do not include a URL path.

BuiltWith result returned after payment settlement

object required

BuiltWith API JSON response. Fields vary by capability and available data.