Show HN: Filling PDF forms with AI using client-side tool calling

A shiny new demo promising you can chat with a PDF and have it fill out forms instantly should have been a neat little productivity flex. Instead, the community turned it into a full-on comment-section cage match over the question everyone asks when a bot touches paperwork: where is my personal data actually going? One commenter immediately sounded the alarm, warning that the demo should make it much clearer if sensitive details like addresses or tax numbers are sent to a remote server. Another jumped in just as fast to push back, insisting the whole point is that document data can stay on your machine while the tool does its magic. Same product, wildly different vibes.

Then came the comedy. One user proudly stress-tested it by typing a fake Social Security number, only to watch the AI dump it into the box for “4 Exemptions.” Ouch. That instantly fueled the anti-hype crowd, who basically asked: if I still have to check every field, is this actually easier than just typing it myself? Others were more curious than cynical, wondering if it could work with Chrome’s built-in AI or help tame the nightmare of hundreds of stubborn PDF forms.

So the mood is delightfully messy: half “this could be huge,” half “absolutely not with my paperwork.” The real headline isn’t just AI filling forms — it’s the internet doing what it does best: turning a simple demo into a privacy panic, a usefulness debate, and an accidental meme about a very confused tax form.