--- title: No Vibes Allowed: Solving Hard Problems in Complex... description: A deep dive into advanced context engineering techniques for AI coding agents, focusing on the research-plan-implement (RPI) workflow to solve complex problems... canonical: https://daily.dev/posts/no-vibes-allowed-solving-hard-problems-in-complex-codebases-dex-horthy-humanlayer-1sk1vjeqd twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: No Vibes Allowed: Solving Hard Problems in Complex Codebases – Dex Horthy, HumanLayer | daily.dev og:description: A deep dive into advanced context engineering techniques for AI coding agents, focusing on the research-plan-implement (RPI) workflow to solve complex problems... og:url: https://daily.dev/posts/no-vibes-allowed-solving-hard-problems-in-complex-codebases-dex-horthy-humanlayer-1sk1vjeqd og:image: https://api.daily.dev/og/posts/1Sk1vjeqD.png og:image:alt: No Vibes Allowed: Solving Hard Problems in Complex Codebases – Dex Horthy, HumanLayer og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # No Vibes Allowed: Solving Hard Problems in Complex Codebases – Dex Horthy, HumanLayer **[AI Engineer](https://daily.dev/sources/aidotengineer)** · 20 min read · 3 upvotes · 0 comments ## Summary A deep dive into advanced context engineering techniques for AI coding agents, focusing on the research-plan-implement (RPI) workflow to solve complex problems in brownfield codebases. The talk introduces concepts like intentional compaction, the "dumb zone" (context window degradation beyond 40%), and sub-agents for context control. Key insights include treating context windows as the primary optimization target, avoiding semantic diffusion in terminology, and maintaining mental alignment through readable plans. The speaker demonstrates successful application in large Rust codebases and emphasizes that AI amplifies thinking rather than replacing it, requiring human oversight at high-leverage points in the workflow. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Vibe Coding with AI: Best Practices for Human-AI Collaboration in Software Development](https://daily.dev/posts/vibe-coding-with-ai-best-practices-for-human-ai-collaboration-in-software-development-qfeh8tjhn) · Towards Data Science · 24 upvotes · 3 comments - [Systematic AI Coding: My Takeaways from the Eclipse Foundation Workshop in Brussels](https://daily.dev/posts/systematic-ai-coding-my-takeaways-from-the-eclipse-foundation-workshop-in-brussels-xbawoqbwl) · Foojay.io · 1 upvotes · 0 comments - [Beyond the Hype: Vibe coding – Is this really how we’ll build software?](https://daily.dev/posts/beyond-the-hype-vibe-coding-is-this-really-how-we-ll-build-software--tyyxto17z) · Scott Logic · 1 upvotes · 0 comments - [From Zero to AIHero with Vibe Coding](https://daily.dev/posts/from-zero-to-aihero-with-vibe-coding-yvwalnntv) · Codemotion · 2 upvotes · 0 comments - [How to Vibe Code: A Developer's Playbook](https://daily.dev/posts/how-to-vibe-code-a-developer-s-playbook-757x49kxw) · Daily Dose of Data Science \| Avi Chawla \| Substack · 5 upvotes · 0 comments --- Tags: [#ai-agents](https://daily.dev/tags/ai-agents), [#llm](https://daily.dev/tags/llm), [#productivity](https://daily.dev/tags/productivity) [View this post on daily.dev](https://daily.dev/posts/no-vibes-allowed-solving-hard-problems-in-complex-codebases-dex-horthy-humanlayer-1sk1vjeqd) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"No Vibes Allowed: Solving Hard Problems in Complex Codebases – Dex Horthy, HumanLayer","url":"https://daily.dev/posts/no-vibes-allowed-solving-hard-problems-in-complex-codebases-dex-horthy-humanlayer-1sk1vjeqd","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/no-vibes-allowed-solving-hard-problems-in-complex-codebases-dex-horthy-humanlayer-1sk1vjeqd"},"datePublished":"2025-12-02T23:05:29.263Z","dateModified":"2026-03-15T03:30:59.991Z","description":"A deep dive into advanced context engineering techniques for AI coding agents, focusing on the research-plan-implement (RPI) workflow to solve complex problems...","image":"https://i.ytimg.com/vi/rmvDxxNubIg/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/rmvDxxNubIg/sddefault.jpg","isAccessibleForFree":true,"articleSection":"AI Engineer","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"AI Engineer","logo":"https://media.daily.dev/image/upload/s--u5PucxNT--/f_auto/v1724338940/logos/aidotengineer","url":"https://daily.dev/sources/aidotengineer"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/no-vibes-allowed-solving-hard-problems-in-complex-codebases-dex-horthy-humanlayer-1sk1vjeqd","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":3},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai-agents,llm,productivity","timeRequired":"PT20M","video":{"@type":"VideoObject","name":"No Vibes Allowed: Solving Hard Problems in Complex Codebases – Dex Horthy, HumanLayer","description":"A deep dive into advanced context engineering techniques for AI coding agents, focusing on the research-plan-implement (RPI) workflow to solve complex problems...","thumbnailUrl":"https://i.ytimg.com/vi/rmvDxxNubIg/sddefault.jpg","uploadDate":"2025-12-02T23:05:29.263Z","duration":"PT20M","url":"https://api.daily.dev/r/1Sk1vjeqD","embedUrl":"https://www.youtube.com/embed/rmvDxxNubIg"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"AI Engineer","item":"https://daily.dev/sources/aidotengineer"},{"@type":"ListItem","position":3,"name":"No Vibes Allowed: Solving Hard Problems in Complex Codebases – Dex Horthy, HumanLayer"}]} ```