BuiltWith REST API
The provider-published OpenAPI 3.0.3 document covering the whole BuiltWith REST surface - WhoAmI, Usage, Domain, Change, Lists, Relationships, Free, Company to URL, Tags, Recommendations, Redirects, Keywords, Keyword Search, Trends, Product, Trust, Financial, Social, Vector Search, Ask, agent device-code authorization and agent billing - served by BuiltWith at /.well-known/openai.json.