Source record

Published by Hacker News · Show HN (50+ points) (T2 source). The original is at https://github.com/AbdullahAlhariri/penmentor.

Pipeline notes

The summary and note below are generated by the signal pipeline — they are Beyond Desk’s reading, not quotations from the source.

Penmentor is an open-source tool where users write math by hand on a digital canvas and Claude reviews the work, returning teacher-style markups in the user's own handwriting space.

A small, concrete open-source reference for a pen-input-to-AI feedback loop on math, useful for anyone building handwriting-first agent pipelines.

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