New Codex Design Workflow Makes Codex Better Than Most Designers

By Lukas Margerie

Categories: Design, Product

Summary

Codex's new design workflow enables AI agents to generate production-ready landing pages and product interfaces by combining multiple skills and MCPs—no design experience needed. By chaining prompts through MagicPath integration and design principle skills, builders can transform basic layouts into polished designs with custom logos, illustrations, and 3D icons in minutes.

Key Takeaways

  1. Use MagicPath.ai skill inside Codex to create infinite canvas designs. Start with a simple prompt like 'design a landing page for a SaaS business' and let the AI generate hero sections, navbars, and graphics automatically.
  2. Chain multiple AI skills together for compound design improvements. Install the 'Make Interfaces Feel Better' skill (16 core principles: concentric border radius, optical alignment, shadows over borders) to polish initial AI-generated designs.
  3. Leverage GPT image generation built into Codex without API keys. Ask agents to generate images first, then integrate them into designs—useful for testing capabilities even if final assets come from elsewhere.
  4. Separate image generation from design iteration. First prompt: generate all images with transparent backgrounds. Second prompt: integrate images into layout with specific style requirements (3D icons, no backgrounds).
  5. This workflow works beyond landing pages—apply the same AI design agent approach to existing products like Electron apps to make smart design updates without manual redesign work.

Topics

Transcript Excerpt

Hey guys, so I recently discovered or unlocked this design hack or design workflow when building out projects inside of Codex. Now, I wanted to build a simple landing page for some fictional AI startup that helps patients with sleep apnea. And this was the original design that I got, something very very simple. But then after this whole workflow, I basically got this, right? Custom logo, custom illustrations, nice neat design. We have different sections. We have these like appear animations. Everything here basically designed by an AI agent with the combination of different skills and MCPs. And this doesn't just work for landing pages. Obviously, you can get some type of product that you've been working on, like for example, this is an electron app that I've built a couple weeks ago to hel…