{"product_id":"the-agentic-codebase-len-p-van-der-hof-msc-9798187627509","title":"The Agentic Codebase: The Five-Layer Architecture That Makes Agent Work Survive Production","description":"\u003cb\u003eThe demo worked. Six months later, no one could reproduce it.\u003c\/b\u003e \u003cp\u003e\u003c\/p\u003eYour best prompt is buried in chat history. The rules disagree. Tool connections live in one engineer's personal configuration. A new model arrives, and nobody can tell whether the system improved or quietly broke. \u003cp\u003e\u003c\/p\u003eIf that sounds familiar, the problem is not another weak prompt. It is \u003cb\u003eagentic repo debt\u003c\/b\u003e. \u003cp\u003e\u003c\/p\u003e\u003ci\u003eThe Agentic Codebase\u003c\/i\u003e is a practical architecture book for technical founders, senior engineers, and AI platform leaders who need agent work to become repeatable, governable, and maintainable. \u003cp\u003e\u003c\/p\u003eThe central idea: your repository is not merely where an agent's output lands. It is the operating system the agent works inside. \u003cp\u003e\u003c\/p\u003eThe book introduces \u003cb\u003eSTACK\u003c\/b\u003e, a five-layer framework for designing that operating system: \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eStructure\u003c\/b\u003e: make the codebase navigable, bounded, and legible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eToolchain\u003c\/b\u003e: standardize the shells, CLIs, runners, and environments that perform the work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAgent configuration\u003c\/b\u003e: turn scattered prompts into versioned rules, skills, roles, and workflows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eConnection layer\u003c\/b\u003e: govern MCP servers, hooks, plugins, credentials, and tool contracts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eKnowledge and quality\u003c\/b\u003e: manage memory, context, evals, observability, cost, and safety.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003eFollow NexumOS, a fictional but realistic startup repository, from a brilliant but fragile prototype to a system a team can inspect and maintain. Along the way, you will work with repo-debt scorecards, STACK audits, instruction files, skill packages, role charters, context tiers, tool contracts, plugin reviews, evals, CI gates, and a disciplined route from vibe coding to maintained software. \u003cp\u003e\u003c\/p\u003eThis is \u003cb\u003enot\u003c\/b\u003e another prompt collection. It is not a vendor manual, and it does not promise autonomous software without judgment. It gives you the durable engineering patterns beneath fast-changing tools, plus implementation examples you can adapt and test against your own environment. \u003cp\u003e\u003c\/p\u003e\u003cb\u003eStop building agent demos that depend on memory. Build the repository that remembers.\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Len P. Van Der Hof Msc\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9798187627509\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Independently Published\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 07\/16\/2026\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 484\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 1.41lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.00h x 6.00w x 0.97d","brand":"Len P. Van Der Hof Msc","offers":[{"title":"Paperback","offer_id":48997942362367,"sku":"9798187627509","price":17.97,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.whiterainbookhouse.com\/products\/the-agentic-codebase-len-p-van-der-hof-msc-9798187627509","provider":"WR Book House","version":"1.0","type":"link"}