Knowledge
Knowledge gives the agent reusable context that should guide more than one prompt. Reflex Build separates project-wide knowledge from instructions that apply only to the current app.
Project Knowledge

Use project knowledge for guidance shared by apps in the same project, such as:
- Product terminology and audience.
- Organization-wide architecture or security rules.
- Shared data concepts and naming conventions.
- Links or references that every app team should use.
You can manage project knowledge from Knowledge in the project sidebar or follow the project-knowledge link in the app's Knowledge panel.
App Instructions
Open the app's more menu and select Knowledge. Add instructions that should apply only to the current app, such as:
App instructions save when you select another control. Keep them short, specific, and current; contradictory or obsolete instructions make generation less predictable.
Design Systems
Use a design system for reusable visual guidance such as color tokens, typography, spacing, and component patterns. Keep behavior and architecture rules in Knowledge so each source of context has a clear purpose.