Tutorials

Step-by-step guides on designing and prototyping with Codex, hand-picked from across the web.

Tutorial ·DEV.to ·

GPT Image 2 inside Codex — a frontend workflow

An experience report on building UI with GPT Image 2 inside the Codex App: natural-language components, repo-aware brand reuse, and DOM-level commenting.

Read on DEV.to ◇ nexu.io
Tutorial ·DEV.to ·

Hallmark — a design skill to fight AI-generated UI slop

A community Codex skill that installs in one command and aims to keep AI-generated UI consistent with your design taste.

Read on DEV.to ◇ nexu.io
Tutorial ·DEV.to ·

Figma design-to-code: comparing MCP, Codex, and Kombai

A hands-on benchmark of three design-to-code approaches using the same Figma template across Figma MCP, Codex, and Kombai.

Read on DEV.to ◇ nexu.io
Tutorial ·DEV.to ·

Turn Figma into React code using Codex

A practical step-by-step on using Codex to generate scalable React components from Figma, with refactor and accessibility checkpoints.

Read on DEV.to ◇ nexu.io
Tutorial ·DEV.to ·

Codex Desktop — skills, plugins, automations

A complete tour of Codex Desktop's extension surfaces, including a section on integrating design tools like Paper into the workflow.

Read on DEV.to ◇ nexu.io
Tutorial ·OpenAI Developers ·

Designing delightful frontends with GPT-5.4

OpenAI's frontend art-direction guide: one-composition heroes, brand-first hierarchy, expressive typography, and dashboard restraint.

Read on OpenAI Developers ◇ nexu.io
Tutorial ·OpenAI Developers ·

Build responsive frontends with Codex

OpenAI's official walkthrough on turning screenshots, briefs, and reference assets into responsive UI with Codex, including Playwright-driven visual iteration.

Read on OpenAI Developers ◇ nexu.io
Tutorial ·Figma Blog ·

Building frontend UIs with Codex and Figma

Figma's blog on the MCP server beta — how to round-trip design context between Figma and Codex code generation.

Read on Figma Blog ◇ nexu.io
Tutorial ·OpenAI Developers ·

Save workflows as reusable Codex skills

OpenAI's tutorial on capturing repeatable design and engineering workflows with the skill-creator pattern.

Read on OpenAI Developers ◇ nexu.io
Tutorial ·openai/skills on GitHub ·

frontend-skill — OpenAI's curated design rules

The official frontend skill repository with hard rules for hero composition, dashboard restraint, and brand-first hierarchy.

Read on openai/skills on GitHub ◇ nexu.io
Tutorial ·UX Collective on Medium ·

Designing with Codex CLI — a designer's perspective

A designer-focused walkthrough on chaining Codex CLI, Figma MCP, and Code Connect to turn wireframes into production-ready UI.

Read on UX Collective on Medium ◇ nexu.io
Tutorial ·OpenAI Developers ·

Codex Agent Skills — official overview

OpenAI's reference on what Codex skills are, how SKILL.md is structured, and how to organize implicit and explicit skill invocation.

Read on OpenAI Developers ◇ nexu.io