Penmentor adds AI marking of handwritten math to xournal++
Overview
Penmentor is an open-source, MIT-licensed tool released by developer abdullahalharir that sends handwritten math from xournal++ to Claude, Gemini, or GPT. The model marks the page like a teacher and gives hints rather than answers.
The tool can also generate interactive manim animations from boxed integrals.
Penmentor runs on Claude Code, Codex, or Antigravity CLI using the user's existing subscription, according to the Show HN post. It currently requires Linux on X11 with the relevant agent logged in.
Written by AI from the articles below · updated Oct 20, 12:53 PM ET
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- Hacker News · Show HN, AI (20+ points)BlogPenmentor uses Claude, Gemini or GPT to mark handwritten math in xournal++
AIPenmentor is an open-source MIT-licensed tool that sends handwritten math from xournal++ to Claude, Gemini, or GPT, which marks the page like a teacher and gives hints instead of answers. It also generates interactive manim animations from boxed integrals, and runs on Claude Code, Codex, or Antigravity CLI using the user's existing subscription. It currently requires Linux on X11 with the relevant agent logged in.
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