The Authors Guild — one of the largest associations of writers in the US — has launched a new project that allows authors to certify that their book was written by a human, and not generated by artificial intelligence.

Certification is currently restricted to Authors Guild members and books penned by a single writer, but will expand “in the future” to include books by non-Guild members and multiple authors. Books and other works must be almost entirely written by humans to qualify for a Human Authored mark, with minor exceptions to accommodate things like AI-powered grammar and spell-check applications.

“The Human Authored initiative isn’t about rejecting technology — it’s about creating transparency, acknowledging the reader’s desire for human connection, and celebrating the uniquely human elements of storytelling,” guild CEO Mary Rasenberger said in a statement on Wednesday. “Authors can still qualify if they use AI as a tool for spell-checking or research, but the certification connotes that the literary expression itself, with the unique human voice that every author brings to their writing, emanated from the human intellect.”