X-PlayServ-Public-Key. The key already carries its own project + env, so no project id is needed — the tool calls GET /api/v1/oauth/providers with just the key to resolve the project and discover which sign-in flows are live. Tiles below are enabled / greyed accordingly.:start → Google consent → :callback flow for a project and shows the issued player_id + session_token.:start → Apple JS SDK popup → :callback flow, plus a paste-an-identityToken tab that posts to apple:verify for the native iOS path.:start → Epic consent → :callback flow against the configured EOS deployment and shows the issued player_id + session_token.