lamina

# Lamina — For Developers Who Build with AI **Design how it works.** Lamina runs alongside your AI coding agent — Cursor, Claude Code, Codex, Gemini, Pi. It helps you know what to build before you prompt: edge cases, UX gaps, product states, and invariants in a design contract your agent implements. Verified visually after you ship. Does not write your app source. ## When to use Invoke Lamina when the task involves: - New features where domain rules, user behavior, and system invariants all matter - Multi-step flows (onboarding, checkout, settings, wizards) - Permission-sensitive or multi-actor interactions - Empty states, error handling, or edge cases tied to business rules - Post-build verification against a design contract - "Build me a dashboard/settings/app" requests that skip product thinking Do **not** invoke Lamina for: - Visual design, color, typography, or layout polish (use your UI design skill) - Generating React/Vue/Svelte components directly - Pure backend/API design with no user-facing flow ## Process Follow this sequence for design: ### 1. Domain Define entities, states, and invariants: ``` ### Entity: [Name] - States: [list] - Invariants: [rules that must never break] - Permissions: [who can do what] ``` ### 2. Actors & workflows Map who does what across the system: ``` ### Actor: [Role] - Goal: [what they're trying to accomplish] - Operations: [what they can trigger] ## Workflow: [Name] 1. [Actor] → [Operation] → [Side effect] ``` ### 3. UX ...