sero-prototype: Design & UI for AI Agents | OpenAgentSkill

Overview

Create and review interactive Sero UX prototypes in the styleguide. Use when the user asks for a prototype, mockup, interaction concept, design exploration, UX review with a reviewable artifact, or a proposed Sero UI before production implementation. Trigger for work in `apps/styleguide/public/prototypes/` and for requests that say "prototype before implementing", "show me first", or "make this match Sero".

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Creating Sero prototypes

Build a reviewable design artifact that matches the current Sero desktop UI. Do not treat a prototype as production implementation.

Non-negotiable rules

Store every deliverable under apps/styleguide/public/prototypes/.
Link every interactive prototype from apps/styleguide/src/PrototypeArchive.tsx.
Never deliver a prototype from /tmp, a clipboard path, or another protected directory.
Inspect the closest existing prototype before creating a new one. Reuse its useful structure and interaction patterns, but verify them against the current product source because archived prototypes can be outdated.
Do not edit production UI while the user is still reviewing the prototype.
Show only controls and behavior supported by the proposed design. Do not add decorative controls that imply unsupported functionality.
Use ASD-STE100 Simplified Technical English for labels and explanatory copy.

Workflow

1. Define the review question

State what the prototype must help the user decide. Extract these items from the request and screenshots:

target workflow and entry point
behavior that must match an existing Sero surface
supported and unsupported actions
key states the user must compare
unresolved product choices

Ask focused questions before building only when different answers would change the interaction model. If the user asked to discuss before implementation, stop after the prototype and review notes.

2. Inspect Sero before drawing

Read the smallest relevant set of sources:

The current production components for the feature and the Sero surface it must match.
packages/ui/src/styles/globals.css for current tokens, typography, focus, radii, and status colors.
Related shared components under packages/ui/src/components/.
The closest prototype in apps/styleguide/public/prototypes/.
apps/styleguide/src/PrototypeArchive.tsx to understand current names and avoid duplicate entries.

For changes to an existing concept, inspect its saved prototype first. Create a new descriptive prototype file unless the user explicitly asks to replace the historical artifact.

3. Choose the artifact

Use an interactive standalone HTML prototype by default. Name it with a short, lowercase kebab-case slug:

apps/styleguide/public/prototypes/<concept>.html

Use prototypes/<concept>/index.html with adjacent CSS, JavaScript, or image assets when a single HTML file would become hard to review or exceed the repository file-size rules. Do not depend on a CDN or remote runtime. The prototype must work through the styleguide Vite server without network access.

Use static images only when interaction adds no review value. Put persistent review captures in:

apps/styleguide/public/prototypes/screenshots/<concept>/

4. Match the product

Copy semantic token names and current values from the Sero design system. Do not invent a second palette.
Match the current desktop layout, density, spacing, border treatment, typography, active states, and control placement.
Use standard Sero font sizes. In React or Tailwind prototypes, use utilities such as text-xs, text-sm, and text-base instead of arbitrary sizes.
Use inline Lucide SVG geometry or repository-owned assets. Do not substitute emoji or unrelated Unicode glyphs for product icons.
Use realistic, sanitized Sero data. Keep names and copy short.
Preserve the hierarchy and interaction language of the product surface being matched. A different runtime or backend must not create a different visual system without a product reason.
Use clear focus, hover, selected, disabled, loading, streaming, success, and error states where they affect the proposed workflow.
Respect prefers-reduced-motion. Avoid animation that does not explain a state change.

If the prototype explores alternatives, label each option and keep the data and viewport consistent so the user can compare the design rather than the content.

5. Make the important behavior real

Implement the interactions needed for review, not every product feature. Common examples include:

opening and closing menus, popovers, and dialogs
search and filtering
keyboard focus, Enter, arrow keys when applicable, and Escape
adding, selecting, renaming, or deleting prototype rows
changing empty, loading, connected, disconnected, or streaming states
preserving user overrides such as expansion and scroll position

Use semantic HTML. Every icon-only button needs an accessible name. Every field needs a label or accessible name. Keep the DOM state and visible state in sync.

6. Add the archive entry

Add a concise label and prototype path to interactivePrototypes in apps/styleguide/src/PrototypeArchive.tsx. Keep the label specific enough to distinguish revisions of the same feature.

The archive is a design history. Do not describe a prototype as current product behavior or overwrite an older concept without an explicit reason.

7. Serve and review it

Run the styleguide from the repository root:

pnpm styleguide

Open the prototype through the server, never through a file:// URL:

http://127.0.0.1:5176/prototypes/<concept>.html

Use the agent-browser skill when browser automation is available. Check:

The archive link opens the prototype.
Every review interaction works from the served URL.
Keyboard focus order and Escape behavior are correct.
The design works at the user's screenshot size and at a smaller desktop viewport.
Popovers and menus stay within the viewport.
Text does not clip at normal desktop zoom.
An accessibility audit has no automatic violations. Manually inspect any incomplete contrast results.

Capture the default state and each decision-critical state when screenshots make review easier. Keep those captures in the repository if they are part of the requested deliverable.

8. Validate

Run:

pnpm --filter @sero/styleguide build
git diff --check

Run root pnpm typecheck before a commit, as required by AGENTS.md.

Do not run React Doctor for a standalone HTML prototype. Run it when the prototype changes React code beyond the archive entry.

Quality gate

Do not call the prototype ready until all answers are yes:

Does it answer the user's review question?
Does it look like the current Sero surface it must match?
Did you inspect and learn from the closest existing prototype?
Are unsupported controls absent?
Are the important interactions functional with mouse and keyboard?
Are default, empty, busy, failure, and confirmation states represented when relevant?
Is it reachable from the styleguide archive?
Did you test the served URL at two desktop viewport sizes?
Did build, diff, and accessibility checks pass?

Delivery

Report:

the repository path
the styleguide route
the states and interactions included
the source examples used for consistency
validation results
any product decision still needed

Do not provide a temporary path as the primary deliverable. Do not implement the production feature until the user approves the direction.

View source ↗

File metadata

name: sero-prototype
description: |
  Create and review interactive Sero UX prototypes in the styleguide. Use when
  the user asks for a prototype, mockup, interaction concept, design
  exploration, UX review with a reviewable artifact, or a proposed Sero UI
  before production implementation. Trigger for work in
  `apps/styleguide/public/prototypes/` and for requests that say "prototype
  before implementing", "show me first", or "make this match Sero".

View original text

---
name: sero-prototype
description: |
  Create and review interactive Sero UX prototypes in the styleguide. Use when
  the user asks for a prototype, mockup, interaction concept, design
  exploration, UX review with a reviewable artifact, or a proposed Sero UI
  before production implementation. Trigger for work in
  `apps/styleguide/public/prototypes/` and for requests that say "prototype
  before implementing", "show me first", or "make this match Sero".
---

# Creating Sero prototypes

Build a reviewable design artifact that matches the current Sero desktop UI.
Do not treat a prototype as production implementation.

## Non-negotiable rules

- Store every deliverable under `apps/styleguide/public/prototypes/`.
- Link every interactive prototype from
  `apps/styleguide/src/PrototypeArchive.tsx`.
- Never deliver a prototype from `/tmp`, a clipboard path, or another protected
  directory.
- Inspect the closest existing prototype before creating a new one. Reuse its
  useful structure and interaction patterns, but verify them against the current
  product source because archived prototypes can be outdated.
- Do not edit production UI while the user is still reviewing the prototype.
- Show only controls and behavior supported by the proposed design. Do not add
  decorative controls that imply unsupported functionality.
- Use ASD-STE100 Simplified Technical English for labels and explanatory copy.

## Workflow

### 1. Define the review question

State what the prototype must help the user decide. Extract these items from
the request and screenshots:

- target workflow and entry point
- behavior that must match an existing Sero surface
- supported and unsupported actions
- key states the user must compare
- unresolved product choices

Ask focused questions before building only when different answers would change
the interaction model. If the user asked to discuss before implementation, stop
after the prototype and review notes.

### 2. Inspect Sero before drawing

Read the smallest relevant set of sources:

1. The current production components for the feature and the Sero surface it
   must match.
2. `packages/ui/src/styles/globals.css` for current tokens, typography, focus,
   radii, and status colors.
3. Related shared components under `packages/ui/src/components/`.
4. The closest prototype in `apps/styleguide/public/prototypes/`.
5. `apps/styleguide/src/PrototypeArchive.tsx` to understand current names and
   avoid duplicate entries.

For changes to an existing concept, inspect its saved prototype first. Create a
new descriptive prototype file unless the user explicitly asks to replace the
historical artifact.

### 3. Choose the artifact

Use an interactive standalone HTML prototype by default. Name it with a short,
lowercase kebab-case slug:

```text
apps/styleguide/public/prototypes/<concept>.html
```

Use `prototypes/<concept>/index.html` with adjacent CSS, JavaScript, or image
assets when a single HTML file would become hard to review or exceed the
repository file-size rules. Do not depend on a CDN or remote runtime. The
prototype must work through the styleguide Vite server without network access.

Use static images only when interaction adds no review value. Put persistent
review captures in:

```text
apps/styleguide/public/prototypes/screenshots/<concept>/
```

### 4. Match the product

- Copy semantic token names and current values from the Sero design system.
  Do not invent a second palette.
- Match the current desktop layout, density, spacing, border treatment,
  typography, active states, and control placement.
- Use standard Sero font sizes. In React or Tailwind prototypes, use utilities
  such as `text-xs`, `text-sm`, and `text-base` instead of arbitrary sizes.
- Use inline Lucide SVG geometry or repository-owned assets. Do not substitute
  emoji or unrelated Unicode glyphs for product icons.
- Use realistic, sanitized Sero data. Keep names and copy short.
- Preserve the hierarchy and interaction language of the product surface being
  matched. A different runtime or backend must not create a different visual
  system without a product reason.
- Use clear focus, hover, selected, disabled, loading, streaming, success, and
  error states where they affect the proposed workflow.
- Respect `prefers-reduced-motion`. Avoid animation that does not explain a
  state change.

If the prototype explores alternatives, label each option and keep the data and
viewport consistent so the user can compare the design rather than the content.

### 5. Make the important behavior real

Implement the interactions needed for review, not every product feature. Common
examples include:

- opening and closing menus, popovers, and dialogs
- search and filtering
- keyboard focus, Enter, arrow keys when applicable, and Escape
- adding, selecting, renaming, or deleting prototype rows
- changing empty, loading, connected, disconnected, or streaming states
- preserving user overrides such as expansion and scroll position

Use semantic HTML. Every icon-only button needs an accessible name. Every field
needs a label or accessible name. Keep the DOM state and visible state in sync.

### 6. Add the archive entry

Add a concise label and prototype path to `interactivePrototypes` in
`apps/styleguide/src/PrototypeArchive.tsx`. Keep the label specific enough to
distinguish revisions of the same feature.

The archive is a design history. Do not describe a prototype as current product
behavior or overwrite an older concept without an explicit reason.

### 7. Serve and review it

Run the styleguide from the repository root:

```bash
pnpm styleguide
```

Open the prototype through the server, never through a `file://` URL:

```text
http://127.0.0.1:5176/prototypes/<concept>.html
```

Use the `agent-browser` skill when browser automation is available. Check:

1. The archive link opens the prototype.
2. Every review interaction works from the served URL.
3. Keyboard focus order and Escape behavior are correct.
4. The design works at the user's screenshot size and at a smaller desktop
   viewport.
5. Popovers and menus stay within the viewport.
6. Text does not clip at normal desktop zoom.
7. An accessibility audit has no automatic violations. Manually inspect any
   incomplete contrast results.

Capture the default state and each decision-critical state when screenshots
make review easier. Keep those captures in the repository if they are part of
the requested deliverable.

### 8. Validate

Run:

```bash
pnpm --filter @sero/styleguide build
git diff --check
```

Run root `pnpm typecheck` before a commit, as required by `AGENTS.md`.

Do not run React Doctor for a standalone HTML prototype. Run it when the
prototype changes React code beyond the archive entry.

## Quality gate

Do not call the prototype ready until all answers are yes:

- Does it answer the user's review question?
- Does it look like the current Sero surface it must match?
- Did you inspect and learn from the closest existing prototype?
- Are unsupported controls absent?
- Are the important interactions functional with mouse and keyboard?
- Are default, empty, busy, failure, and confirmation states represented when
  relevant?
- Is it reachable from the styleguide archive?
- Did you test the served URL at two desktop viewport sizes?
- Did build, diff, and accessibility checks pass?

## Delivery

Report:

- the repository path
- the styleguide route
- the states and interactions included
- the source examples used for consistency
- validation results
- any product decision still needed

Do not provide a temporary path as the primary deliverable. Do not implement the
production feature until the user approves the direction.

Review the source

Skill source recorded

Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.

Review before install: Avoid automatic install

License: Apache-2.0

Dependency or permission surface needs review
Permission surface may require sandboxing
Financial research output is not financial advice; require human review before any live investment decision
Low GitHub adoption signal
AI review approval is missing
Financial research output is not financial advice; require human review before any live investment decision.
Quality score needs review
Permission surface needs review: secrets or environment access, shell or command execution
GitHub adoption: 24 GitHub stars
Stars/forks activity: 24 stars, 1 forks; issue activity unavailable in current metadata
Dependency/runtime risk: command execution surface, credential or environment access
Permission surface: secrets or environment access, shell or command execution

Open full audit

Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.

Start with one small task

1Read the source. Confirm the input, expected output, dependencies and permissions.

Source & usage notes

IndexedStatic Checked

Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.

Source repository: sero-labs/sero
License: Apache-2.0
Version: Unknown
Last GitHub push: Sep 13, 2026
Registry updated: Sep 13, 2026
Instruction path: .agents/skills/sero-prototype/SKILL.md @ 383efb07bcfb

Version reported in registry metadata; check source releases before relying on it.

Quality

55/100

Promising

Trust

58/100

Agent access

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.

Open install API LLM text format Open manifest Auto-resolve Plan

More details

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    "production agents without a repository review",
    "Low GitHub adoption signal",
    "No OpenAgentSkill engagement data yet",
    "High-risk permission hints: Shell or command execution, Secrets or environment access",
    "Dependency or permission surface needs review",
    "Permission surface may require sandboxing",
    "Financial research output is not financial advice; require human review before any live investment decision"
  ],
  "agent_contract": {
    "task_input": "Use sero-prototype in an agent workflow",
    "recommended_action": "Do not auto-install. Inspect the source, dependencies, and permission surface first.",
    "install_policy": "block",
    "minimum_review_before_use": [
      "Trust: 66/100 Manual review",
      "Audit: 71/100 Needs review",
      "Safety: 27/100 Avoid automatic install",
      "Review repository, license, install command, and permission surface before production use."
    ],
    "expected_agent_output": {
      "selected_skill": "sero-labs-sero-prototype (sero-prototype)",
      "install_command": "npx skills add sero-labs/sero --skill sero-prototype",
      "risk_summary": "Needs review; Blocked for auto-install; Review before production",
      "verification_result": "Report the smallest successful task, files touched, warnings, and any missing setup."
    }
  },
  "outcome_feedback": {
    "endpoint": "https://www.openagentskill.com/api/agent/outcome",
    "method": "POST",
    "requires_resolve_event_id": true,
    "event_id_source": "Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.",
    "expected_outcomes": [
      "success",
      "failed",
      "not_relevant",
      "blocked_by_risk",
      "setup_required"
    ],
    "payload_template": {
      "event_id": "<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>",
      "skill_slug": "sero-labs-sero-prototype",
      "task": "Use sero-prototype in an agent workflow",
      "agent": "codex",
      "outcome": "success",
      "install_used": true,
      "risk_blocked": false,
      "setup_required": false,
      "task_success": true,
      "output_quality": 4,
      "error_type": null,
      "human_review_required": false,
      "workspace": "sandbox",
      "time_to_useful_ms": 120000,
      "notes": "Report the smallest successful task, setup friction, files touched, and risk notes."
    }
  },
  "endpoints": {
    "web": "https://www.openagentskill.com/skills/sero-labs-sero-prototype",
    "api": "https://www.openagentskill.com/api/agent/skills/sero-labs-sero-prototype",
    "audit": "https://www.openagentskill.com/skills/sero-labs-sero-prototype/audit",
    "eval": "https://www.openagentskill.com/api/agent/evals?slug=sero-labs-sero-prototype&task=Use%20sero-prototype%20in%20an%20agent%20workflow&max_risk=medium",
    "resolve": "https://www.openagentskill.com/api/agent/resolve?task=Use%20sero-prototype%20in%20an%20agent%20workflow&agent=codex&max_risk=medium",
    "receipt": "https://www.openagentskill.com/api/agent/receipt?task=Use%20sero-prototype%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text",
    "install": "https://www.openagentskill.com/api/skills/sero-labs-sero-prototype/install",
    "manifest": "https://www.openagentskill.com/api/registry/manifest/sero-labs-sero-prototype"
  }
}

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Creator: sero-labs
Source: sero-labs/sero
Indexed by: OpenAgentSkill community index

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