It wouldn’t be a HN post without someone sizing the work as “a couple of hours” and a “$5/month cost” after all.
Though my post is missing an /s that I didn’t think it needed.
But... that's all you're doing though? Because one could fork OpenSign and stick a RAG agent on the side in a couple hours, right?
One could literally vibe code this feature into a PR for OpenSign in like 15 minutes.