How to Use This Playbook
For yourself: A mental model for when and how to leverage AI across the design process. Not every project hits every phase linearly — skip, loop, remix.
To kick off with a new AI agent: Drop the relevant phase section into your first message. It tells the AI what mode you need, what you'll bring, and what you expect back.
The core principle: AI handles breadth and speed. You provide depth and judgment. Every phase has a different ratio.
The Process
Cross-cutting practices run through every phase: Decision logging · Context management · Friction → tooling automation
Phase 0: Context
Set the stage so AI can think with you, not at you.
🔧 Setup — AI assists extraction, you curateThis is the most underrated phase. Skip it and every subsequent AI interaction is worse. The quality of your context pack directly determines the quality of AI partnership throughout the project.
What You Bring
- Product briefs, PRDs, or verbal description
- Existing designs (Figma links, screenshots, prototypes)
- Brand guidelines, design system docs
- Technical constraints (platforms, hardware, APIs)
- Business context (stage, timeline, team size, goals)
What AI Does
- Extracts and structures raw info into organized docs
- Pulls design tokens from existing files
- Maps screen inventory and flow connections
- Identifies gaps: "you haven't mentioned X — intentional?"
The Context Pack
project-name/
├── context/
│ ├── brief.md # Product, users, constraints, goals
│ ├── design-system.md # Tokens, components, patterns
│ ├── app-structure.md # Current screens, flows, navigation
│ ├── decisions.md # Design decision log (ongoing)
│ └── [topic].md # Competitive research, IA map, etc.
Prompt Pattern
Here's the product context: [paste brief]
Help me organize this into a structured project brief.
What's missing that you'd need to be a useful thinking partner on this project?
Exit Criteria
- Brief covers product, users, constraints, and goals
- Design system documented (even if minimal)
- Current state captured (or "greenfield" noted)
- Context folder is handoff-ready for a new team member
Phase 1: Discover
Expand the map before you pick a direction.
⚡ High — AI excels at breadth; you steer depthThis is where AI earns its keep fastest. Competitive research that would take days takes hours. Problem space exploration that lives in your head gets externalized and pressure-tested.
What You Bring
- Hypotheses about the problem space
- Knowledge of your users (even informal)
- Industry experience and intuition
- Specific questions you're trying to answer
What AI Does
- Competitive analysis across specific dimensions
- Problem space mapping — surface adjacent problems
- Research synthesis into patterns and gaps
- Assumption surfacing and challenge
Interaction Mode: Expansive Dialogue
Don't ask for a report. Think out loud and let AI expand on it.
Prompt Patterns
# Competitive Research
Analyze [competitors] focusing on: [specific dimensions].
Don't just list features — compare approaches and interaction patterns.
What gaps exist that no one is filling?
# Problem Space Expansion
I'm designing [X] for [users]. Here's what I think the core problems are: [list].
What am I missing? What adjacent problems would a user encounter
before and after using this product?
# Assumption Check
Here are the assumptions I'm working with: [list].
Which ones are riskiest? What would change if each one were wrong?
Exit Criteria
- You can articulate your unique angle in the landscape
- Assumptions are surfaced and risks consciously accepted
- At least one surprising finding that shifted your thinking
Phase 2: Define
Make strategic choices that constrain everything downstream.
🤝 Medium-High — AI generates options; you decide with convictionThis is where product intuition matters most. AI can generate 10 directions — your job is to pick the one with conviction and articulate why.
What You Bring
- Conviction about who the product is for
- Business constraints and priorities
- Intuition about what "feels right" (trust it, then pressure-test)
What AI Does
- User story generation across segments
- Strategy articulation from fuzzy intuitions
- Direction comparison with tradeoffs
- Reframing: "What if you targeted [different segment]?"
- Entity modeling — core data objects and relationships
Interaction Mode: Socratic Challenge
Push back on AI suggestions. Ask "why not the opposite?" The best definitions come from eliminating alternatives with reason.
Prompt Patterns
# User Story Reframe
I'm building [X]. The obvious user is [Y].
But I think the real opportunity is [Z]. Help me articulate why
and what it means for the product.
# Strategy Pressure Test
Here's my product strategy: [strategy].
Play devil's advocate. What's the strongest argument against this direction?
# Entity Modeling
The core objects in this product are: [list].
Help me map the relationships. What's the central entity?
What does that choice imply for the UI?
Exit Criteria
- Product strategy explained in 2 sentences
- Target user specific enough for design decisions
- Entity model clarifies primary vs. secondary in the UI
- Key decisions logged with rationale
Phase 3: Structure
Design the bones before the skin.
⚡ High — AI generates and compares structural options fastInformation architecture is combinatorial — many valid ways to organize the same content. AI rapidly generates and compares structural options while you evaluate against user mental models.
What You Bring
- User mental models
- Business priorities (what needs prominence)
- Technical constraints
- Structural taste
What AI Does
- IA generation — multiple nav structures with tradeoffs
- Flow mapping for key scenarios
- Structural comparison ("5-tab vs 3-tab vs 2-tab+FAB")
- Edge case surfacing
- Pattern matching from similar apps
Interaction Mode: Structured Exploration
Explore 2–3 structural options in depth before committing. Have AI articulate the tradeoffs of each.
Prompt Patterns
# IA Exploration
Here are the core surfaces in the app: [list].
Generate 3 navigation structures. For each one, explain:
- What it prioritizes / What it buries
- How a new user vs. power user experiences it
# Flow Validation
Here's the IA: [structure].
Walk me through these user stories: [stories].
Where does the structure support vs. fight the flow?
# Empty State Design
For each screen in [IA], what does it look like when there's no data?
How does the empty state guide the user?
Exit Criteria
- IA supports all key user stories
- Empty states and edge cases accounted for
- Navigation model decided with documented rationale
- Screen inventory complete
Phase 4: Explore
Find the visual and interaction language.
🤝 Medium — AI generates options; taste is yoursThis is where your design eye matters most. AI can generate mood boards and suggest directions, but it can't replace your aesthetic judgment. Expand the option space, then curate ruthlessly.
What You Bring
- Visual intuition and taste
- Brand sensibility
- References ("it should feel like…")
- Emotional register (playful? minimal? rich?)
What AI Does
- Direction generation with distinct personalities
- Concept articulation (metaphor → design implications)
- Style analysis of references (structural patterns)
- Design system scaffolding (token proposals)
Interaction Mode: Creative Ping-Pong
Share a vague feeling. Let AI articulate it. React. Refine. AI helps you discover what you want by generating things to react to.
Prompt Patterns
# Direction Exploration
The product is [X] for [users]. The feeling should be [descriptors].
Give me 3-4 visual directions. For each: name it, describe the personality,
suggest key design decisions (color, typography, density, motion).
# Reference Analysis
Here's a design I'm inspired by: [reference].
Break down what makes it work structurally — spacing, hierarchy,
and composition principles I could extract.
# Design System Foundation
Based on [direction], propose a design system foundation:
color palette, type scale, spacing scale, corner radius, shadow system.
Exit Criteria
- Visual direction chosen with clear rationale
- Design system tokens defined (even if preliminary)
- You can articulate the "why" behind visual choices
- Direction specific enough for someone else to execute
Phase 5: Design
Screen-level decisions, one surface at a time.
⚡ High — AI drafts screens; you art-directAI as execution partner accelerates the most here. Describe what a screen should do, have AI generate a structured draft, then refine through critique cycles.
What You Bring
- Screen-level judgment (info priority, layout)
- Interaction design decisions
- Quality bar
- User empathy (screen in context of flow)
What AI Does
- Screen spec generation (prioritized content)
- Layout proposals (multiple options)
- Content writing (UI copy, microcopy, errors)
- Interaction spec (transitions, gestures, states)
- Mockup generation (HTML/CSS for evaluation)
Interaction Mode: Art Direction
You're the director. AI proposes, you react and redirect. "More whitespace." "The hierarchy is wrong." "Try it with the action at the bottom."
Prompt Patterns
# Screen Design
Here's the screen: [name and purpose].
Context: [where user came from, what they're trying to do].
Content: [what needs to be on this screen, in priority order].
Generate a detailed layout proposal with hierarchy and interaction notes.
# UI Copy
Write the copy for [screen/flow]. Tone: [tone]. User is [context].
Give me 2-3 options for the key headline.
# Screen Critique
Here's my current design for [screen]: [description or screenshot].
Critique it as a [first-time user / power user / accessibility reviewer].
Exit Criteria
- All screens designed (at least lo-fi)
- Key interactions specified
- Copy written (not placeholder)
- Screens work as a flow, not just individual pages
Phase 6: Prototype
Make it real enough to feel, test, and share.
⚡⚡ Very High — AI builds; you direct and testAI at maximum leverage. Building interactive prototypes from specs is exactly what AI does faster and more consistently than manual construction. Your role: testing, feeling, directing revisions.
What You Bring
- The sense of "this doesn't feel right"
- Judgment about motion, timing, feedback
- User perspective (testing with fresh eyes)
- Stakeholder awareness
What AI Does
- Interactive prototype generation
- Motion and animation
- State handling (empty, loading, populated, error)
- Responsive adaptation
- Rapid iteration cycles
Interaction Mode: Build → Feel → Direct
Don't over-spec. Get a rough prototype fast, interact with it, then direct changes based on how it feels.
Prompt Patterns
# Prototype Generation
Build an interactive prototype for [flow].
Here's the spec: [screens + transitions].
Make it feel like a real app — smooth transitions, touch targets, proper spacing.
Single HTML file I can open in a mobile browser.
# Iteration
The [specific part] doesn't feel right.
[What's wrong: too fast / too much info / wrong hierarchy / etc.]
Try [specific direction].
# Multi-State
Show me all states for [screen]:
empty, loading, populated (few), populated (many), error.
How do transitions between states feel?
Exit Criteria
- Key flows clickable end-to-end
- It "feels" right when you use it
- Stakeholders can experience the design
- Edge cases visible (empty states, errors, loading)
Phase 7: Refine
Critique, iterate, polish — with AI as a fresh pair of eyes.
🤝 Medium — AI provides structured critique; you filterAI critique is most valuable with a specific lens. "What do you think?" gets generic feedback. "Critique this as a first-time user who doesn't know what this app does" gets actionable insight.
What You Bring
- Design maturity (what polish level is needed now)
- Prioritization (which feedback to act on)
- Quality bar (your standard for "done")
What AI Does
- Structured critique against specific criteria
- Persona-based review
- Consistency audit across screens
- Accessibility check
- Copy review (tone, clarity, brevity)
Interaction Mode: Structured Review Cycles
Ask for critique through specific lenses, one at a time. Focused rounds produce better feedback than "review everything."
Prompt Patterns
# Persona-Based Critique
Review [screen/flow] as [specific persona with context].
First impression? Where do you get confused?
What would make you abandon this flow?
# Consistency Audit
Here are all screens in [flow]: [list/screenshots].
Check consistency in: spacing, typography, button styles,
copy patterns, icon usage, interaction patterns.
# Accessibility Review
Review [design] for accessibility:
- Color contrast (WCAG AA), touch targets (44px min)
- Reading order, screen reader flow
- Cognitive load and information density
Exit Criteria
- At least one round of structured critique completed
- Critical usability issues addressed
- Cross-screen consistency verified
- Proud enough to show stakeholders
Phase 8: Bridge
Connect design to everything beyond the canvas.
⚡⚡ Very High — AI builds tools and specs; you validateThe bridge between design and implementation is full of tedious, structural work that AI handles exceptionally well — specs, documentation, tooling, and format translation.
What You Bring
- Knowledge of your team's workflow
- Quality standards for handoff
- Tool preferences
What AI Does
- Spec generation (measurements, tokens, interactions)
- Custom tooling (Figma plugins, converters)
- Design system documentation
- Developer handoff docs
- Design token export (CSS vars, JSON tokens)
- Workflow automation
Interaction Mode: Specification + Tool Building
Be precise about what developers need. AI translates design intent into technical specification and builds workflow tools.
Prompt Patterns
# Spec Generation
Generate developer specs for [screen]:
- All measurements using design system tokens
- Interaction behavior for each element
- All states (default, hover, pressed, disabled, loading, error)
- Final copy
# Custom Tooling
I keep doing [repetitive task] manually.
Build me a [script/plugin/tool] that does it automatically.
Input: [what I provide]. Output: [what I need].
# Design System Documentation
Document [component] for the team:
- When to use it (and when not to), variants and states
- Spacing/layout rules, interaction specs, code-ready tokens
Exit Criteria
- Key screens have developer-ready specs
- Design system documented for the team
- Repetitive workflow friction automated
- Developers can build without constant clarification
Cross-Cutting Practices
These run through every phase. They're not steps — they're habits.
Decision Logging
Every non-trivial design decision gets logged with: what was decided, why (the rationale — the valuable part), what it affects downstream, and status (active / superseded / under review).
This log is your project's institutional memory. When someone asks "why is it like this?" six months later, the answer is in the log.
Log this decision: [what you decided and why].
What downstream effects should we note?
Context Management
AI is only as good as its context. Manage it actively:
- Start of session: Load the context pack — brief, relevant decisions, where you left off
- During work: Update context docs immediately when significant decisions are made
- End of session: Write a handoff note — current state, open questions, next steps
The context pack makes you agent-agnostic. Any AI that reads your brief.md, decisions.md, and latest handoff note is 80% caught up.
Friction → Tooling
Keep a friction log. When something slows you down repeatedly:
- Notice the friction ("I keep manually exporting these frames…")
- Describe the transformation (input → output)
- Ask AI to build a tool
- Test, iterate once, integrate
The best tools come from observed friction, not anticipated needs. Don't pre-build — let the pain reveal what matters.
Kicking Off With a New AI Agent
When you start a design project with any AI, send this:
I'm a product designer starting work on [project].
Here's my project context: [paste brief.md or key summary]
I work with AI as a thinking partner across the full design process —
from strategy through prototyping to implementation. Here's how I like to work:
1. Be opinionated. I want a collaborator, not a yes-machine.
2. Push back on my assumptions. If you see a gap, say so.
3. Structure your thinking. Use headers, bullets, and clear hierarchy.
4. When I ask for options, give me 3 with distinct tradeoffs — not 3 variations of the same idea.
5. Log important decisions as we go (what, why, impact).
6. Ask me clarifying questions when you need them, but don't stall on every ambiguity.
Current phase: [which phase you're in]
Current focus: [what you're working on]
Open questions: [any unresolved items]
Let's go.
Quick Reference
| Phase | AI Leverage | AI Mode | Your Mode |
|---|---|---|---|
| 0. Context | 🔧 Setup | Extract & structure | Curate & validate |
| 1. Discover | ⚡ High | Research & expand | Steer & prioritize |
| 2. Define | 🤝 Medium-High | Generate & pressure-test | Decide with conviction |
| 3. Structure | ⚡ High | Generate & compare | Evaluate & commit |
| 4. Explore | 🤝 Medium | Propose & articulate | React & curate |
| 5. Design | ⚡ High | Draft & iterate | Art-direct & refine |
| 6. Prototype | ⚡⚡ Very High | Build & revise | Feel & direct |
| 7. Refine | 🤝 Medium | Critique & audit | Filter & prioritize |
| 8. Bridge | ⚡⚡ Very High | Spec & build tools | Validate & ship |