Wireframing and prototyping workflow: fidelity levels (lo-fi sketch → mid-fi wireframe → hi-fi prototype), tool selection (Figma, Excalidraw, Balsamiq), user flow diagrams, wireframe annotation standards, information architecture (IA) mapping, and the handoff from wireframe to visual design. For developers who need to communicate UI structure before writing code.
From clarcnpx claudepluginhub marvinrichter/clarc --plugin clarcThis skill uses the workspace's default tool permissions.
Designs and optimizes AI agent action spaces, tool definitions, observation formats, error recovery, and context for higher task completion rates.
Enables AI agents to execute x402 payments with per-task budgets, spending controls, and non-custodial wallets via MCP tools. Use when agents pay for APIs, services, or other agents.
Compares coding agents like Claude Code and Aider on custom YAML-defined codebase tasks using git worktrees, measuring pass rate, cost, time, and consistency.
Choose the right fidelity for the stage of work.
| Level | What it is | When to use | Tool |
|---|---|---|---|
| Lo-fi sketch | Boxes, lines, labels — no styling | Early ideation, quick exploration | Paper, Excalidraw, ASCII |
| Mid-fi wireframe | Grayscale, content placeholders, real layout | UX review, stakeholder alignment | Figma (wireframe kit), Balsamiq |
| Hi-fi wireframe | Near-final layout, real content, no color | Pre-handoff to visual design | Figma |
| Interactive prototype | Clickable flows, transitions | User testing, investor demos | Figma prototyping |
Rule: Start at the lowest fidelity that answers the current question. Only increase fidelity when you've validated the structure.
For quick communication in chat, tickets, or documentation — no tool required.
┌─────────────────────────────┐ Box / container
│ │
└─────────────────────────────┘
[Button Label] CTA button
[ Input placeholder ] Text input
[x] Checkbox (o) Radio Form controls
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Divider / separator
▓▓▓▓▓▓▓▓▓▓▓▓▓ Image placeholder
░░░░░░░░░░░░░ Skeleton/loading state
≡ Hamburger menu ✕ Close ⌕ Search ← Back
┌─────────────────────────────────────────────┐
│ ← Settings │
├──────────────┬──────────────────────────────┤
│ │ Account │
│ Account │ ─────────────────────────── │
│ Billing │ Name [ John Doe ] │
│ Security │ Email [ john@... ] │
│ Notifications│ │
│ API Keys │ [ Save Changes ] │
│ │ │
└──────────────┴──────────────────────────────┘
Map the user journey before designing screens.
[Page/Screen] — a UI state
<Decision> — a branch point (yes/no, logged in/out)
(Action) — user action
→ — flow direction
↵ — loop back
Error states — document alongside happy path, not as afterthought
Empty states — what does the screen look like with no data?
Loading states — what shows during async operations?
(User clicks "Sign Up")
↓
[Sign Up Form]
↓
<Email already exists?>
Yes ↓ No ↓
[Error: "Email taken"] (Submit form)
[Login link shown] ↓
[Email Verification]
↓
<Verified within 24h?>
No ↓ Yes ↓
[Resend email] [Create Profile]
↓
[Dashboard — empty state]
## Flow: [Feature Name]
**Entry point:** [Where does this start?]
**Exit points:** [Where can this end?]
**Preconditions:** [What must be true before this flow starts?]
### Happy path
1. User [action]
2. System [response]
3. User [action]
4. System [response]
### Error paths
- E1: [Condition] → [What the system shows]
- E2: [Condition] → [What the system shows]
### Edge cases
- [Edge case and how it's handled]
IA defines how content is organized and labeled — before layout decisions.
Home
├── Dashboard
│ ├── Overview
│ └── Activity Feed
├── Projects
│ ├── All Projects
│ ├── [Project Name]
│ │ ├── Overview
│ │ ├── Members
│ │ ├── Settings
│ │ └── Billing
│ └── New Project
├── Settings
│ ├── Profile
│ ├── Security
│ ├── Notifications
│ └── API Keys
└── Help & Support
├── Documentation
└── Contact
Annotations explain behavior that visual design cannot show.
| Symbol | Meaning | Use for |
|---|---|---|
[1] | Numbered callout | Linking to spec note |
! | Important note | Edge case, constraint |
? | Open question | Unresolved decision |
→ | Links to | Screen reference |
**[1]** Search results
- Default: show last 5 searches when input is focused
- Typing: show live results after 300ms debounce
- Max results: 8 items
- Empty query: show "recent searches" section
- No results: show "No results for [query]" + suggestion
**[2]** Pagination
- Show when total items > 20
- Always show: first, last, and 2 pages around current
- Loading: skeleton rows, same count as previous page
**!** Error state
- API timeout (>5s): show "Something went wrong" with retry button
- Network offline: show banner, queue actions for retry
Best for: quick lo-fi, async async async collaboration, developer-friendly
Pros: Free, shareable URL, hand-drawn feel (reduces premature polish attachment)
Works in VS Code, embedded in Notion/Linear
Cons: Not great for hi-fi, no component library out of the box
Best for: mid-fi and hi-fi, full team collaboration, handoff to visual design
Pros: Industry standard, component libraries, Dev Mode handoff, prototyping
Cons: Overkill for lo-fi, learning curve
Setup: Install "Wireframe Kit" community file for grayscale wireframing
Best for: stakeholder-friendly lo-fi, non-technical clients
Pros: Intentionally rough look (signals "this is not final"), fast
Cons: Not free, limited for hi-fi
Best for: developer communication, PR descriptions, issue comments
Pros: No tool needed, version-controllable, always accessible
Cons: Limited fidelity
When wireframe is approved, hand off to visual design (or proceed to hi-fi if self-directing).
## Wireframe Handoff: [Feature Name]
### What's been decided
- Layout structure (column count, section order)
- Navigation model (tabs / sidebar / breadcrumb)
- Primary user flow (happy path and key error paths)
- Content hierarchy (what's most important on each screen)
### What's NOT decided (for visual design)
- Colors, typography, spacing values
- Illustration or icon choices
- Micro-interactions and transitions
- Final copy (placeholder text only)
### Open questions (needs decision before visual design)
- [ ] [Open question 1]
- [ ] [Open question 2]
### Annotated wireframes: [Figma link or image]
### User flow diagram: [link or embedded above]
? annotations (not left implicit)