Developer builds open tool to rewrite AI drafts in his own writing style

A developer has built an open-source tool called Hyphos that rewrites AI-generated drafts to match his personal writing style, documenting the process in a detailed build log. He began by compiling a personal corpus from a decade of sent emails and coding agent transcripts, but found that 91 percent of the 1.27 million extracted words came from messages too long to have been genuinely typed by a human. After rigorous filtering for machine-generated text and authorship verification, he was left with roughly 80,000 words from transcripts and 84,000 from email that he could confidently attribute to himself. Analysing his pre-2023 writing revealed he had never once used an em-dash, so the tool now strips them out automatically via hard-coded rules rather than relying on model instructions. The system scores each output for stylistic similarity and detectable AI phrases, though the developer notes the style-matching component remains unreliable on texts shorter than 250 words.