A requirements list, file map, and change log for every close

Claude Opus 5 scored 100% on all 20 attempts at four month-end close tasks in a recent Mercor benchmark. Twelve licensed CPAs averaged 37% on the same work. Getting it right turns out to be the easy part. Frank Tingley has built and run analytics teams at The North Face, Craftsy, and DISH Network, and now runs Tome Advisory. He shows exactly where a correct number slips between Claude's output and the signed-off table, then hands you the Claude Skill that stops it. Built for accounting and FP&A, or anyone who closes the books or signs off on work Claude helped with. You should already be using Claude for some of that work.