Cloud Browser APISelenium is unavailableThe returned seleniumRemoteUrl answers 501. Use Playwright or Puppeteer instead.GET /browser/v1/selenium-unsupported○ UnsupportedReturns501Errors contain statusCode, error and message; the native API adds code. The request ID is in X-Request-Id. Errors Connection guide Response This endpoint does not declare a successful response.Stream session updatesSSE events: snapshot, session, pages, action, event and end. The data field is JSON. A ping comment is sent every 15 seconds; end closes the stream. Historical replay is not available.