The fanfiction community is divided over the use of generative AI tools like Claude and ChatGPT, with some readers developing detection methods to root out AI-generated works. These methods, including a skin for the Archive of Our Own repository, claim to identify coding artifacts left behind by AI bots. However, the results are questionable and may lead to false accusations against human writers. The debate highlights the tension between creativity and technology in fan communities. Why it matters: the controversy surrounding AI-generated fanfic raises important questions about authorship and authenticity in the digital age.