Register a frontend application, then add the generated browser setup. Its restricted token can send telemetry only for that application; it cannot read project data or report as another service.
The Frontend page combines page-load latency, Core Web Vitals, slow resources and API calls, and browser errors. Filter by page, domain, country, browser, operating system, or device, then open the matching records in Live view.
Where to find it: contact Pydantic for access, then open Project settings → Frontend applications in your project. See the frontend observability guide.