Build Web Apps
End-to-end web application development plugin for Codex — UI, React, deployment, payments and databases all covered in one official OpenAI bundle.
Install
npx codex-marketplace add openai/plugins/plugins/build-web-apps --plugin Build Web Apps is OpenAI flagship Codex plugin for full-stack web development. It bundles guidance and integration recipes covering every layer of a modern web application: React or Next.js frontend, API routes or serverless functions, database schema, authentication flows, payment integration, and deployment configuration.
Rather than generic code snippets, the plugin provides opinionated, production-ready patterns that Codex applies consistently: proper error handling, environment variable conventions, type safety, and test coverage expectations are built into every generated component. With 893 GitHub stars and official OpenAI authorship it is the highest-starred coding plugin in the Codex Marketplace.
Features
Full lifecycle
Covers UI, API, database, auth, payments and deployment in one plugin.
Framework guidance
Opinionated patterns for React, Next.js, Vite and Remix.
Integration recipes
Ready-to-use recipes for Stripe, Supabase, Auth.js and Vercel.
Common Use Cases
- Rapid full-stack prototyping
- Adding payments or auth to an existing app
- Production-ready deployment setup