Registry indexed
Design a new screen, flow or component as a self-contained HTML artboard on the prototype canvas, built from the board's existing design tokens rather than invented values. Covers picking or extending the token block, generating a row of screens from one script, iterating against
Design a new screen, flow or component as a self-contained HTML artboard on the prototype canvas, built from the board's existing design tokens rather than invented values. Covers picking or extending the token block, generating a row of screens from one script, iterating against annotated screenshots, and verifying by rendering. Use when asked to mock up a new screen or feature, design variants/proposals to compare, extend an existing board with more states, or turn a spec into artboards.
Source documentation, not instructions for this website. Review permissions before running any commands.
For work with no reference screenshot to copy. If there is one, use
sp-clone-prototype instead. Measurement beats invention every time.
Everything renders on the canvas from canvases/<slug>/; see sp-canvas for
running it, and its references/layout.md for the folder and layout.json
rules.
The app ships the template folder, and sp root prints where. sp, refkit or artgen not found? Run sh <sp-canvas skill dir>/scripts/install.sh (Windows: install.ps1)
and follow that skill's references/install.md. A [super-prototyping:notice]
line on their stderr carries its own rule: finish the step, then do what it says.
KIT="$(sp root)"
mkdir -p canvases # first board in a project
B=canvases/<slug>
cp -r "$KIT/canvases/templates" "$B"
python3 "$B/gen.py"
Everything a run derives goes under $B/scratch/: shots, montages, candidate
boards. A -o without a directory writes into whatever the current directory
happens to be, which is the user's project root as often as not. The
template's parked reference is ref-01-screen.html, and that stays out of
git too. Once per project:
for p in 'ref-*.html' '**/assets/refs/' 'scratch/'; do
grep -qxF "$p" .gitignore 2>/dev/null || echo "$p" >> .gitignore
done
Never invent a palette when the product already has one.
00-design-tokens.html block
verbatim. Copy it byte-identically into the new file; a sandboxed iframe
has no shared stylesheet.sp-clone-prototype Phase 1 and
Phase 2 first; come back with a measured token block.NAME and the prefix, and pick deliberately: a
platform-native stack, a neutral ramp, one accent, one danger. Keep the
evidence table and write why in it ("iOS system
blue", "brand hex from the logo"). An unexplained hex is a future bug.A new token is a decision, not a convenience. If a screen needs a colour or a size that is not in the block, either it belongs in the block (add it there, in every file) or the screen is wrong.
Readers take the copy, numbers and states in a mockup as product decisions.
PRD.md first when it has one (the sp-define-product
skill writes it). Its users, scope and Screens table, with the states of
each screen, are the brief.data: URI.Same rule as cloning. Write one script that emits every .html in the
folder, and edit the script, never the output.
TOKENS = ":root{...}" # one source of truth
def page(title, extra_css, body): ... # TOKENS + frame + body
Constraints (from the canvas renderer):
sandbox="" means no external CSS, JS, fonts or
images; data: URIs and inline SVG only.aria-label on icon-only controls. A mock
that fails contrast ships a screen that fails contrast.When the ask is "show me some options", make each proposal a whole artboard in one row, not a fragment:
{ "title": "Card layout proposals", "numbered": true,
"files": [
{ "file": "10-cards-continuity", "label": "Continuity" },
{ "file": "11-cards-structured", "label": "Structured" },
{ "file": "12-cards-reference", "label": "Reference" }
] }
Three is usually the right number. Two reads as a false binary, five as indecision. Make them genuinely different approaches, not three spacing values, and put a one-line rationale at the bottom of each board. Rows align column-for-column, so a second row of the same three under a different state reads as a matrix.
For review, the user marks up a screenshot of the canvas with boxes, arrows and numbers, then pastes it back.
Answer every annotation, including the ones you disagree with. Say so in a line and make the change, or say why you did not and what you did instead.
refkit shoot "$B"/*.html -o "$B/scratch/shots" --scale 2
refkit montage "$B"/scratch/shots/*.png -o "$B/scratch/board.png" --height 520
Read the montage. Check, in order: nothing clipped; text wraps where you
intended; the same element has the same inset on every screen; nothing uses a
colour that is not in the token block (grep -o '#[0-9A-Fa-f]\{6\}' on the
generated files and compare the set against :root).
Re-render after every pass. A change you have not re-rendered is not done.
name: sp-new-ui-mock description: Design a new screen, flow or component as a self-contained HTML artboard on the prototype canvas, built from the board's existing design tokens rather than invented values. Covers picking or extending the token block, generating a row of screens from one script, iterating against annotated screenshots, and verifying by rendering. Use when asked to mock up a new screen or feature, design variants/proposals to compare, extend an existing board with more states, or turn a spec into artboards. license: Apache-2.0 compatibility: Requires python3 and the refkit command, which the Super Prototyping app puts on PATH (sp-canvas's scripts/install.sh or install.ps1). Google Chrome for refkit shoot. metadata: managed-by: super-prototyping
---
name: sp-new-ui-mock
description: Design a new screen, flow or component as a self-contained HTML artboard on the prototype canvas, built from the board's existing design tokens rather than invented values. Covers picking or extending the token block, generating a row of screens from one script, iterating against annotated screenshots, and verifying by rendering. Use when asked to mock up a new screen or feature, design variants/proposals to compare, extend an existing board with more states, or turn a spec into artboards.
license: Apache-2.0
compatibility: Requires python3 and the refkit command, which the Super Prototyping app puts on PATH (sp-canvas's scripts/install.sh or install.ps1). Google Chrome for refkit shoot.
metadata:
managed-by: super-prototyping
---
# New UI mock
For work with **no reference screenshot to copy**. If there is one, use
`sp-clone-prototype` instead. Measurement beats invention every time.
Everything renders on the canvas from `canvases/<slug>/`; see `sp-canvas` for
running it, and its `references/layout.md` for the folder and `layout.json`
rules.
The app ships the template folder, and `sp root` prints where. `sp`, `refkit` or `artgen` not found? Run `sh <sp-canvas skill dir>/scripts/install.sh` (Windows: `install.ps1`)
and follow that skill's `references/install.md`. A `[super-prototyping:notice]`
line on their stderr carries its own rule: finish the step, then do what it says.
```bash
KIT="$(sp root)"
mkdir -p canvases # first board in a project
B=canvases/<slug>
cp -r "$KIT/canvases/templates" "$B"
python3 "$B/gen.py"
```
Everything a run derives goes under `$B/scratch/`: shots, montages, candidate
boards. A `-o` without a directory writes into whatever the current directory
happens to be, which is the user's project root as often as not. The
template's parked reference is `ref-01-screen.html`, and that stays out of
git too. Once per project:
```bash
for p in 'ref-*.html' '**/assets/refs/' 'scratch/'; do
grep -qxF "$p" .gitignore 2>/dev/null || echo "$p" >> .gitignore
done
```
---
## 1. Find the tokens before you design
Never invent a palette when the product already has one.
- **Extending an existing board?** Reuse its `00-design-tokens.html` block
verbatim. Copy it byte-identically into the new file; a sandboxed iframe
has no shared stylesheet.
- **Cloning a real app's look?** Stop and run `sp-clone-prototype` Phase 1 and
Phase 2 first; come back with a measured token block.
- **Genuinely new product, nothing to measure?** Copy the shipped template
folder, change `NAME` and the prefix, and pick deliberately: a
platform-native stack, a neutral ramp, one accent, one danger. Keep the
evidence table and write *why* in it ("iOS system
blue", "brand hex from the logo"). An unexplained hex is a future bug.
A new token is a decision, not a convenience. If a screen needs a colour or a
size that is not in the block, either it belongs in the block (add it there,
in every file) or the screen is wrong.
---
## 2. Ground the content
Readers take the copy, numbers and states in a mockup as product decisions.
- Read the project's `PRD.md` first when it has one (the `sp-define-product`
skill writes it). Its users, scope and Screens table, with the states of
each screen, are the brief.
- Take strings from the real source when it exists: localization files,
existing screens, the spec. Never from imagination.
- Use real assets over hand-drawn approximations: the actual icon, the actual
logo, the actual empty-state illustration, embedded as a `data:` URI.
- Design the **unhappy states too**: empty, loading, error, long string,
longest plausible number. A mock that only shows the happy path hides
exactly the layout problems worth finding now.
---
## 3. One generator, one row of screens
Same rule as cloning. Write **one** script that emits every `.html` in the
folder, and edit the script, never the output.
```python
TOKENS = ":root{...}" # one source of truth
def page(title, extra_css, body): ... # TOKENS + frame + body
```
Constraints (from the canvas renderer):
- **Fully self-contained.** `sandbox=""` means no external CSS, JS, fonts or
images; `data:` URIs and inline SVG only.
- **Artboard box is 478 × 980.** Overflow clips silently.
- iPhone frame 393 × 852 pt at 1pt = 1px: 54px status bar, 125 × 36 Dynamic
Island, 139 × 5 home indicator.
- Avoid SF Symbols private-use glyphs; they render as tofu without SF Pro.
- Accessibility is not a mockup detail to skip: real contrast on real
backgrounds, ≥ 44pt tap targets, `aria-label` on icon-only controls. A mock
that fails contrast ships a screen that fails contrast.
### Proposals to compare
When the ask is "show me some options", make each proposal a **whole
artboard in one row**, not a fragment:
```json
{ "title": "Card layout proposals", "numbered": true,
"files": [
{ "file": "10-cards-continuity", "label": "Continuity" },
{ "file": "11-cards-structured", "label": "Structured" },
{ "file": "12-cards-reference", "label": "Reference" }
] }
```
Three is usually the right number. Two reads as a false binary, five as
indecision. Make them **genuinely different approaches**, not three spacing
values, and put a one-line rationale at the bottom of each board. Rows align
column-for-column, so a second row of the same three under a different state
reads as a matrix.
---
## 4. Iterate against annotated screenshots
For review, the user marks up a screenshot of the canvas with boxes, arrows
and numbers, then pastes it back.
1. Echo what you read each annotation as, before touching anything.
2. Change the generator, not the artboard.
3. Re-run the generator; the canvas swaps in the new board.
4. Verify that region visually before claiming it is done.
Answer every annotation, including the ones you disagree with. Say so in a
line and make the change, or say why you did not and what you did instead.
---
## 5. Verify by rendering
```bash
refkit shoot "$B"/*.html -o "$B/scratch/shots" --scale 2
refkit montage "$B"/scratch/shots/*.png -o "$B/scratch/board.png" --height 520
```
Read the montage. Check, in order: nothing clipped; text wraps where you
intended; the same element has the same inset on every screen; nothing uses a
colour that is not in the token block (`grep -o '#[0-9A-Fa-f]\{6\}'` on the
generated files and compare the set against `:root`).
Re-render after every pass. A change you have not re-rendered is not done.
Free to get does not mean free to run. Price labels are not safety ratings. Submit pricing information →
Source needs review
The tracked source changed or could not be synchronized. Review the current source before installing.
Review before install: Avoid automatic install
License: Apache-2.0
Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.
Check the source for dependencies, API keys and third-party costs. A public repository does not mean every service is free.
Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.
Version reported in registry metadata; check source releases before relying on it.
Quality
61/100
Promising
Trust
62/100
Sandbox only
Audit
74/100
Needs review
Copies are not installs. Installation counts require a reported successful installation; they are not a blanket quality guarantee.
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
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}Listing source
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