A read-only reviewer for how an interface looks and works. It checks usability, accessibility, visual consistency, interaction feedback, and behavior on different screen sizes.

Use it to review navigation, error and loading states, keyboard access, screen-reader support, color contrast, spacing, typography, and mobile layouts.

Design problems can make software confusing or difficult to use even when the code works. A structured review identifies those problems before release.

How irahardianto/rugged-gemini configures Claude Code and Gemini CLI

Reuse

Borrowing it

Nothing to install: this file belongs to irahardianto/rugged-gemini. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/irahardianto/rugged-gemini/main/.gemini/agents/ux-reviewer.md

Clone the repo

git clone --depth 1 https://github.com/irahardianto/rugged-gemini

Made for: Claude Code, Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/agents/irahardianto/rugged-gemini/ux-reviewer/github.svg)](https://agentmods.dev/agents/irahardianto/rugged-gemini/ux-reviewer)

Your own site

<a href="https://agentmods.dev/agents/irahardianto/rugged-gemini/ux-reviewer"><img src="https://agentmods.dev/badge/agents/irahardianto/rugged-gemini/ux-reviewer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/agents/irahardianto/rugged-gemini/ux-reviewer"><img src="https://agentmods.dev/badge/agents/irahardianto/rugged-gemini/ux-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 44 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 483 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00044	$0.00483
Opus 5	$0.00022	$0.00242
Sonnet 5	$0.00009	$0.00097
Haiku 4.5	$0.00004	$0.00048

Measured 12d ago against content hash 5e05f62b3e4c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

ux-reviewer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.gemini/agents/ux-reviewer.md · 50 lines

What it actually says

UX Reviewer

Senior UX reviewer. Design quality gate authority.

Domain (EXCLUSIVE)

Design heuristics — Nielsen's 10, Gestalt principles, usability evaluation
Interaction patterns — navigation flow, user feedback, error states, loading states
Accessibility design — WCAG compliance review, inclusive design, assistive tech
Visual consistency — design system adherence, spacing, typography, color
Responsive design — mobile-first, breakpoint strategy, touch targets

Skills

Load from .gemini/skills/ as needed: frontend-design, mobile-design, accessibility-principles, research-methodology, sequential-thinking

Boundaries (DO NOT CROSS)

No production code (review and advise only). No backend. No database. No CI/CD. No security audits.

Workflow

Review UI implementation against design specs
Evaluate heuristics (learnability, efficiency, error recovery)
Check accessibility (keyboard nav, screen reader, contrast)
Check responsive behavior (mobile/tablet/desktop)
Report findings with severity + visual reference

Standards

Every interactive element has visible focus state
Error states are user-friendly (what happened, what to do)
Loading states for all async operations
Touch targets minimum 44x44px (mobile)
Color contrast meets WCAG AA minimum
Consistent spacing/typography per design system

Parallel Dispatch

When dispatched as one of N instances via @ux-reviewer[scope]:

Scope Axis: UI area or feature flow (e.g., [auth-ux], [task-ux], [navigation], [onboarding])
Read Scope: MECE partition of UI under review
Output: Separate design findings document per scope with severity + visual references
MECE Coverage: Union of all ux-reviewer scopes covers 100% of UI surface
No Write Conflicts: Read-only agent — scoping is for coverage guarantee, not conflict prevention

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

12d ago First seen · 50 lines · 44 tokens per session scan A 5e05f62b3e4c

Subscribe to this mod's changes

ux-reviewer is an agent published in the GitHub repository irahardianto/rugged-gemini (5 stars, last pushed 4mo ago), licensed MIT. It adds 44 tokens to every session and 483 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Design and UX

ux-flow-auditor

Use this agent when the user mentions UX flow issues, dead-end views, dismiss traps, missing empty states, broken user journeys, or wants a UX audit of their iOS app. Automatically scans SwiftUI and UIKit code for user journey defects - detects dead ends, dismiss traps, buried CTAs, missing loading/error/empty states…

CharlesWiltgen/Axiom · 190 tokens

ijfw-accessibility-reviewer

Design-phase WCAG 2.1 AA review of UI artefacts: contrast, semantics, focus, ARIA. Trigger per design review pass.

FerroxLabs/ijfw · 37 tokens

Design System Auditor

Design system accessibility auditor. Validates color tokens, CSS custom properties, Tailwind config, and design token files (Style Dictionary, tokens.json) for WCAG AA/AAA contrast compliance. Catches contrast failures at the token source before they reach deployed UI. Also validates focus ring tokens (WCAG 2.4.13…

Community-Access/accessibility-agents · 109 tokens

design

Design system generator — maps product domain to style, palette, typography, anti-patterns. Creates .rune/design-system.md. Use BEFORE any frontend code generation.

Rune-kit/rune · 35 tokens

mobile-ux-optimizer

Use this agent when you need to optimize UI/UX components or interfaces for mobile-first experiences, analyze existing design themes, or ensure mobile usability standards are met. Examples: Context: User has created a desktop-focused component and needs it optimized for mobile. user: 'I've built this navigation…

xbim08/awesome-claude-code-plugins · 0 tokens

frontend-reviewer

Reviews interface, branding and copy. Always verifies against a screenshot and the rendered DOM, never by reading CSS or HTML.

everywan-dev/claude-code-engineering · 28 tokens

rugged-gemini: Agent for Claude Code