It's a Claude Skill for PR and comms people. It strips the tells that make copy read like a machine wrote it - the puffery, the flat sentence rhythm, the "critics argue," the "in today's fast-paced landscape." It's grounded in Wikipedia's own field guide, "Signs of AI writing," which their editors built from thousands of real examples of machine-generated text. What it does not do: beat GPTZero. Detectors score statistical patterns, not vocabulary. Anyone claiming a wordlist fools them is selling snake oil.