http://localhost:4100; it is not a claim that a hosted API is deployed. The interactive playground is disabled until a safe, public test API origin and release process are established.
Authentication
Email challenge and session endpoints support developer sign-in. The console uses those endpoints through its server-side route handlers. A project API key authenticatesGET /v1/whoami; use Authorization: Bearer <test-api-key> from your server. Session tokens and API keys have different purposes and should not be interchanged.