When Browsers Start Acting for You: AI Browsers and the Definition of a Web User Agent
Heather Flanagan explores how AI browsers are reshaping the definition of a web user agent, challenging long-standing web architecture principles around user control, consent, and interaction. As AI-driven features evolve from assistance to autonomous action, the browser’s traditional intermediary role begins to shift in subtle but important ways.
She examines key questions around delegation, accountability, and intent, including how browsers acting on behalf of users blur the line between human interaction and automation. This discussion highlights why emerging AI capabilities in web browsers demand early attention from digital identity, security, and standards communities.









