# Mobile App

> |

- **Type:** Skill
- **Install:** `agentstack add skill-nexu-io-open-design-mobile-app`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [nexu-io](https://agentstack.voostack.com/s/nexu-io)
- **Installs:** 0
- **Category:** [Content & Media](https://agentstack.voostack.com/c/content-and-media)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [nexu-io](https://github.com/nexu-io)
- **Source:** https://github.com/nexu-io/open-design/tree/main/plugins/_official/examples/mobile-app
- **Website:** https://open-design.ai

## Install

```sh
agentstack add skill-nexu-io-open-design-mobile-app
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Mobile App Skill

Produce a single mobile-app screen mockup, framed inside a real-feeling iPhone 15 Pro device.

## Resource map

```
mobile-app/
├── SKILL.md                ← you're reading this
├── assets/
│   └── template.html       ← seed: device frame + screen primitives (READ FIRST)
└── references/
    ├── layouts.md          ← 6 screen archetypes (Feed / Detail / Onboarding / Profile / Checkout / Focus)
    └── checklist.md        ← P0/P1/P2 self-review (anti-fake-device)
```

## Workflow

### Step 0 — Pre-flight

1. **Read `assets/template.html`** end-to-end through the `` block. The Dynamic Island, status bar SVG icons, home indicator, side rails, and tab bar are all already drawn in HTML/SVG — do not re-implement them inline on each screen.
2. **Read `references/layouts.md`** so you know which 6 archetypes exist.
3. **Read the active DESIGN.md** — map its tokens to the six `:root` variables in the seed.

### Step 1 — Copy the seed

Copy `assets/template.html` to the project root as `index.html`. Replace the six `:root` variables with the active design system's tokens. Replace the page `` and the caption above the device.

### Step 2 — Pick exactly one archetype

| Brief language | Use |
|---|---|
| feed, inbox, timeline, list, messages, notifications | A — Feed |
| article, post, item, recipe, song, product, song detail | B — Detail |
| sign-up, welcome, intro, walkthrough, tour | C — Onboarding |
| profile, account, user page, someone's bio | D — Profile |
| checkout, payment, order, form, settings step | E — Checkout |
| timer, map, dashboard widget, single big number | F — Focus / hero card |

A mobile screen does **one job**. If the brief seems to combine two, ship one screen and offer the other as a follow-up.

### Step 3 — Paste and fill

Copy the archetype block from `layouts.md` into ``, replacing the placeholder card. Fill bracketed text with real, specific copy from the brief. **Drop the `` block entirely** for archetypes that don't show one (B, C, E).

### Step 4 — Self-check

Run through `references/checklist.md`. Pay extra attention to:
- Frame still has the Dynamic Island, status bar SVGs, and home indicator
- Tap targets ≥ 44px
- One accent, used ≤ 2× on the screen
- Display headings still use `var(--font-display)` (serif)

### Step 5 — Emit the artifact

```

...

```

One sentence before describing what's there. Stop after ``.

## Hard rules

- **The phone is real.** Dynamic Island gap, SVG status icons, home indicator. The seed protects all three — don't rewrite the frame.
- **Single screen, single job.** No multi-tab tours, no spliced flows.
- **Accent budget = 2.** One active tab + one primary action is the default.
- **Numerics in mono** via `.num` class.
- **Display in serif** via `var(--font-display)`.
- **No external images** — use `.ph-img` placeholders.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [nexu-io](https://github.com/nexu-io)
- **Source:** [nexu-io/open-design](https://github.com/nexu-io/open-design)
- **License:** Apache-2.0
- **Homepage:** https://open-design.ai

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-nexu-io-open-design-mobile-app
- Seller: https://agentstack.voostack.com/s/nexu-io
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.