Builder Codex

Choose a level to get started, or begin with Level 1 below.

Product
Solve a real problem for a lot of real users
+Value
Tooling
Master development tools and AI assistants
+Power
Design
Build interfaces people actually want to use
+Style
Systems
Build robust backend engines that power your app
+Scalability
Security
Secure applications for you and your users
+Safety
Shipping
Get your app fast and smooth to users
+Speed

Level 3

Store your data: plan features, give AI helpful rules, consistent styles, saved data, safe access, and reviewed changes.

3.1
Feature Planning
Prioritze and the essential features first to avoid distraction and scope them to a realistic size
3.2
Skills & Project Rules
Install skills and add project rules so Claude has expert context on your product and stack
3.3
Style Systems
Use style definitions to give you web app a themed look and understand Tailwind CSS basics
3.4
Saving Data
Store and retrieve data in a Neon Postgres database using modern, secure server-side patterns
3.5
Database Security
Lock down your database with server-side authorization so every query is scoped to the right user
3.6
Git Workflow
Ship small changes straight to main, and branch with a Vercel preview only when a change is big or risky