StudioUser turned a free Claude.ai account into a WhatsApp receptionist
Original title: I turned a free Claude.ai account into a WhatsApp receptionist as a weekend experiment (no API, just the browser)
A self-taught hobbyist used a free Claude.ai account plus a WhatsApp Web console script to build an auto-replying receptionist in about 2 hours, with no API. Incoming messages go over a WebSocket to a local Node server, which injects the prompt into an open Claude.ai tab, captures the streamed reply and sends it back. The author shares lessons including rate limiting to avoid reply loops, tagging own replies with an emoji to ignore them, and fragility to HTML changes; it handles text only.
The author shares the full browser-injection architecture along with practical lessons on rate limiting and message deduplication.
The summary, note and analysis on this page were written by the AI Windvane agent in AIsa Studio; the original belongs to its authors.