Systems and methods are provided for delivering context-aware assistance through an
overlay interface. An
overlay rendered on a
user device captures content of a host application underlying the
overlay via a scan-snap process. Captured content is filtered by privacy controls, transmitted securely to a
server, analyzed to determine contextual meaning, and used to generate a response displayed in the overlay. In certain embodiments, capture includes
document object model (DOM) snapshots, pixel-buffer screenshots, or fusion of DOM and
bitmap data, optionally preceded by lightweight on-device
optical character recognition. Mobile embodiments invoke the overlay through gesture inputs, while desktop embodiments employ a clipping interface with
live preview of the selected capture region. Enterprise-oriented embodiments enforce policy restrictions,
mask sensitive fields, and maintain audit logs, while multi-device embodiments synchronize responses across mobile and desktop sessions. The
system thereby enables accurate, privacy-preserving contextual assistance without requiring remote access or manual user explanation.