Two coupled jobs: naming a book before it exists, and retitling one that's already out and not finding readers — plus the jacket copy that runs on the same thinking. Proven four times across a real shelf: two rounds on one book, and an identical retitle workflow on three others.
Which one applies depends entirely on whether the book already has a published title.
5 candidates a round, each with a why-it-works/risk pair, against a stated north star and the book's real constraints. A new round runs when the manuscript's actual thesis evolves — not just on request.
The exact _archive-old-title/ convention: old PDFs/PNGs archived, codenames and folder names untouched, only the displayed title text changes.
"I won't hand you a single 'winning' title — every candidate ships with what makes it work and what could go wrong, and the recommendation names a safe pick, a bold commercial swing, and a dark horse, not one verdict." The candidate that looks "obviously the strongest" is usually the boldest swing — and the boldest swing is, by construction, the most exposed.
The real trail flagged shelf-collision risk informally, in individual risk notes. This build ran the check for real, live, on the same category one of those notes named.
Real shelf data, fetched 2026-09-22 (Goodreads "fasting" shelf — Amazon's own list returned a 503 this session):
The same "describe it to a stranger in one breath" thinking that produces a title produces the back cover.
A publisher's comp once carried a different book's back-cover text verbatim — one title's copy, word for word, on another book's proof. It wasn't caught by assuming the comp was correct. It was caught by checking the returning proof character-for-character against the dated copy-of-record file. Every proof gets that same check now, not just the one that failed once.
SKILL.md lets it auto-discover and trigger from a natural request.No. Every candidate ships with its risk, and the recommendation names three real options, not one verdict — see the refusal gate above.
No. It supplies the title and description text a cover has to carry — cover visual execution is a separate, deferred skill.
No — that's Book Launch & Funnel Strategy. This one owns the title/description artifact, though it feeds that larger strategy.
It asks what evidence that's based on before proposing anything — a retitle without a diagnosed cause risks solving the wrong problem.