Fanfic AI Detector Built on Fragile Foundation

A browser extension that flags Claude-generated text on Archive of Our Own by scanning for CSS artifacts works only when text is pasted directly from Claude. Running the output through Google Docs or Word first strips the marker entirely. Anthropic could disable detection with any interface update, since CSS class names are implementation details, not durable forensic signals. The tool catches procedural laziness, not intentional obfuscation.