Perplexity appears to be on the verge of reshaping the browser landscape with its upcoming Comet browser, which is rapidly evolving into a fully autonomous web agent. Newly discovered functionality suggests Comet will soon support direct posting to X, enabling users to simply type a request into the prompt bar and have the browser navigate to X, log in via a headless session, and post content on their behalf. This same mechanism could be applied more broadly—across email platforms, document edit