Show HN: AI Subroutines – Run automation scripts inside your browser tab

AI Subroutines, developed by rtrvr.ai, enables users to record and replay browser tasks as deterministic scripts within the webpage itself, eliminating token costs, inference delays, and errors. The tool combines network calls and DOM interactions, leveraging in-tab execution for seamless authentication and TLS handling. Key use cases include automating social media DMs, product catalog scraping, EHR form filing, and CRM message syncing.