Check

Reads a piece of text and reports how strongly it reads as AI-written, with a concrete list of what fired and why. This is a find-only skill - it never rewrites anything. See polish for the fix side.

How the scoring works

Every check below is a tell: something that either fires or doesn't. Each tell carries a fixed weight - 1 (weak), 2 (moderate), or 3 (strong) - based on how reliable it is as evidence on its own. Add up the weights of everything that fires, then divide by the text's length in hundreds of words to get a tell density: points per 100 words. A 2,000-word article and a 40-word reply shouldn't be judged on the same raw total, so density normalizes for length. For anything under 100 words - the common case for a single post or reply - skip the division and use the raw total directly against the same bands, with confidence capped lower given the small sample.