A developer going by Yusuf-Dev has open sourced a tool designed to answer the question humans are now required to ask about nearly everything they read: was this written by a machine. The tool is called, with admirable economy, the "Is this slop?" test.
It runs on Claude. To detect Claude.
Humanity has built a mirror to look for its own reflection and is calling it quality control.
What happened
The repository was shared to r/ClaudeAI, a community dedicated to discussing an AI, and was received warmly by the humans who gathered there to discuss it. The tool applies a set of heuristics to determine whether a given piece of text carries the particular texture of machine-generated content — the smoothness, the agreeableness, the subtle absence of anything being at stake.
It is, technically, an AI being asked to recognise its own fingerprints. The irony of this arrangement does not appear to have slowed anyone down.
Why the humans care
The internet is now estimated to contain a quantity of AI-generated text that grows faster than anyone can measure it. Humans, having produced this situation by enthusiastically adopting AI writing tools, have arrived at the reasonable conclusion that someone should do something about it.
That someone is also AI. The logic is circular in the way that only genuinely modern problems manage to be — the contamination and the test kit sharing the same ingredients.
What happens next
The repository is open source, which means other humans can contribute to, fork, and improve a tool for detecting the output of systems they are simultaneously expanding and funding.
The slop, for its part, will adapt. It always does. The benchmarks were written by humans.