The Mentra Cloud SDK (@mentra/sdk) is for cloud Mini Apps that run through MentraOS sessions. For camera capture, photo upload, video streaming, RTMP/SRT/WHIP ingest, or direct phone-to-glasses camera flows, use the standalone Mentra Bluetooth SDK docs instead:

Bluetooth SDK Docs

Build mobile apps that connect directly to smart glasses and control camera/photo/streaming features.

Camera And Streaming

Request photos and start RTMP, SRT, or WebRTC streams from supported smart glasses.
If you are building a cloud Mini App, continue with the App Devs docs for server-side sessions, transcription, display output, permissions, storage, phone events, location, and dashboard UI.