ReferenceAPI & Runtime ContractsOpenAPI ContractsDevice APIAuthorize Caddy on-demand TLS hostAuthorize Caddy on-demand TLS host GET /api/v1/check_domain Retained as a controller route because it is Caddy's on-demand TLS ask endpoint with simple ingress allow/deny semantics, not a durable product data resource. Request Responses204401Domain is permittedDomain is not permitted