I've been building a plugin of executable Claude skills based on Scientific Advertising — Claude Hopkins's book, the original manual for direct-response advertising. You paste any piece of advertising copy — Facebook ad, landing page, hero section, email, sales letter — and Claude runs it through seven sequential sweeps based on Hopkins's laws. Each sweep returns a verdict (PASS / NEAR-PASS / FAIL), cites the specific chapter, and produces a Hopkins-grade rewrite for every failure. This is the first of 20 planned skills. Each one applies a different Hopkins law to a different copy problem. The Copy Audit is the foundation. I tested it on a real Facebook ad from my friend's sandwich shop. Three genuine FAILs and four NEAR-PASSes on the ad he was running. Zero false positives. When I ran it against a gold-standard Hopkins-style ad, it returned all PASSes and didn't invent problems that weren't there. I've attached part of the output from my friend's FB ad audit. The skill .md file is attached. Drop it into your Claude — takes under a minute. Run it on one piece of copy you're already working on. If the output is worth two minutes of feedback, the form is here: https://forms.gle/ioVGL6oCFaEshA7H8 — Hardik