{"product_id":"prompt-engineering-stop-guessing-or-fall-behind-build-the-30-day-system-that-tests-scores-and-versions-every-prompt-you-ship-agentic-coding-systems-by-j-cook","title":"Prompt Engineering - Stop Guessing or Fall Behind: Build the 30-Day System That Tests, Scores, and Versions Every Prompt You Ship (Agentic Coding Systems) by J Cook","description":"\u003cp\u003e**Intact Gift Giving Condition book**\u003c\/p\u003e\u003cp\u003eYou do not know what else you just broke. You change a prompt to fix one case. You cannot prove the new version is better than the old one. You are guessing, and you are shipping the guess.\u003c\/p\u003e","brand":"Independently published","offers":[{"title":"Hardcover","offer_id":46216913322031,"sku":"8170487011","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/0455\/1727\/files\/9798170487011.0.jpg?v=1789842027","url":"https:\/\/www.moonnsixpencebooks.com\/products\/prompt-engineering-stop-guessing-or-fall-behind-build-the-30-day-system-that-tests-scores-and-versions-every-prompt-you-ship-agentic-coding-systems-by-j-cook","provider":"MoonNSixpence Books","version":"1.0","type":"link"}