Most browser extensions that call an AI API route traffic through the developer's server. That means every sentence you highlight, every concept you look up, every follow-up question you type passes through infrastructure you don't control, gets logged or not logged at someone else's discretion, and lives in a database somewhere until it doesn't. rabbitholes doesn't work that way. When you highlight a word and the tooltip fires, the request goes from your browser directly to api.anthropic.com . No intermediary. No proxy. No analytics ping on the side. The extension is Manifest V3, your Anthropic API key lives in chrome.storage.sync — encrypted, scoped to your browser profile, never transmitted to a third-party endpoint. I built it this way because the tool's whole premise is that you should be able to look things up without friction — and "friction" includes having to decide whether you trust the developer's server with your reading habits. Direct-to-API removes that decision.…