{"product_id":"harness-engineering-for-web-developers-yoo-byung-hong-9798254799177","title":"Harness Engineering for Web Developers: From Prompts to Context to Autonomous Agent Environment Design","description":"\u003cb\u003eYour AI agent is only as good as the environment you build around it.\u003c\/b\u003e \u003cp\u003e\u003c\/p\u003ePrompt engineering got us started. Context engineering leveled us up. But as AI agents become autonomous - writing code, running tests, and deploying changes - a new discipline has emerged: \u003cb\u003eHarness Engineering\u003c\/b\u003e. \u003cp\u003e\u003c\/p\u003e\u003cb\u003eHarness Engineering for Web Developers\u003c\/b\u003e is a practical guide that walks you through the three-stage evolution of working with AI, from crafting single prompts to designing full autonomous agent environments. \u003cp\u003e\u003c\/p\u003e\u003cb\u003eWhat you will learn: \u003c\/b\u003e\u003cul\u003e\n\u003cli\u003ePrompt engineering fundamentals - role prompting, chain of thought, few-shot patterns\u003c\/li\u003e\n\u003cli\u003eContext engineering - context windows, RAG, tool use, MCP, and memory systems\u003c\/li\u003e\n\u003cli\u003eHarness engineering - architecture constraints, garbage collection, and reliability math\u003c\/li\u003e\n\u003cli\u003eCLAUDE.md and AGENTS.md - writing effective agent document maps\u003c\/li\u003e\n\u003cli\u003eThe Generator\/Evaluator pattern - separating work and verification for reliable output\u003c\/li\u003e\n\u003cli\u003eBuilding a harness step by step - linters, pre-commit hooks, ArchUnit, CI\/CD gates\u003c\/li\u003e\n\u003cli\u003eProduction harness operations - monitoring, cost management, and self-improving systems\u003c\/li\u003e\n\u003c\/ul\u003eIncludes code recipes for Claude Code, Cursor, GitHub Copilot, and OpenAI Codex. Every concept is illustrated with real-world examples using Spring Boot, FastAPI, React, and TypeScript. \u003cp\u003e\u003c\/p\u003e\u003cb\u003eWhy 95% accuracy is not enough: \u003c\/b\u003e A 20-step agent pipeline at 95% per step succeeds only 36% of the time. This book shows you how to build the harness that turns that 36% into 95%+. \u003cp\u003e\u003c\/p\u003e\u003ci\u003eWritten for developers who want to move from talking to AI to building systems where AI works autonomously and reliably.\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Yoo Byung Hong\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9798254799177\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Independently Published\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 04\/03\/2026\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 470\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 1.37lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.00h x 6.00w x 0.95d","brand":"Yoo Byung Hong","offers":[{"title":"Paperback","offer_id":49084137308415,"sku":"9798254799177","price":29.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.whiterainbookhouse.com\/products\/harness-engineering-for-web-developers-yoo-byung-hong-9798254799177","provider":"WR Book House","version":"1.0","type":"link"}