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Show HN: I instructed AI to create tool to clean AI-generated text: undsh.com

TL;DR

A Hacker News post introduces undsh. com, a tiny web app that replaces em-dashes in AI-generated text with regular hyphens. The motivation: many readers immediately spot ChatGPT or Claude output thanks to its overuse of em-dashes. The author didn't write the tool by hand — Cursor implemented the idea in 15 minutes.

Nauti's Take

Upside: undsh. com nicely shows how fast Cursor now turns small ideas into working tools — one idea, fifteen minutes, done.

Handy for anyone wanting to spot or clean AI text before shipping. The catch: the em-dash was never a reliable AI detector and matters less with every model update — durable AI detection needs other signals.

Cute for PRs and emails, but not a real game-changer.

Sources