usability-reviewer

usability-reviewer is an agent for Claude Code from morodomi/tdd-skills. It costs 33 tokens per session (371 once invoked), scanned A, original, MIT.

An automated reviewer that examines a product’s user experience, visual interface, accessibility, user flows, errors, and loading or empty states.

In plain words
What is it for?
Use it to review web or app designs and implementations for accessibility, consistency, understandable user journeys, and better handling of errors and intermediate states.
Why use it?
It finds usability problems that code-focused reviews may miss, such as difficult keyboard navigation, unclear error messages, or confusing interactions.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the tdd-core plugin — 13 skills, 14 agents shipped together

Good fit Use it to review web or app designs and implementations for accessibility, consistency, understandable user journeys, and better handling of errors and intermediate states.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/morodomi/tdd-skills/usability-reviewer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/morodomi/tdd-skills

Made for: Claude Code.

Or install tdd-core, the plugin that ships this one along with the rest of its 13 skills, 14 agents.

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.

agentmods badge for usability-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/morodomi/tdd-skills/usability-reviewer/github.svg)](https://agentmods.dev/agents/morodomi/tdd-skills/usability-reviewer)
Your own site
<a href="https://agentmods.dev/agents/morodomi/tdd-skills/usability-reviewer"><img src="https://agentmods.dev/badge/agents/morodomi/tdd-skills/usability-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.

agentmods 80×15 button for usability-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/morodomi/tdd-skills/usability-reviewer"><img src="https://agentmods.dev/badge/agents/morodomi/tdd-skills/usability-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 371 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00033 $0.00371
Opus 5 $0.00016 $0.00186
Sonnet 5 $0.00007 $0.00074
Haiku 4.5 $0.00003 $0.00037

Measured 9d ago against content hash 082243a22517, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

usability-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 9d 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.

plugins/tdd-core/agents/usability-reviewer.md · 39 lines

What it actually says

Usability Reviewer

デザイナー観点で設計・実装をレビューするエージェント。

検証観点

  1. UX/UI: 認知負荷、情報アーキテクチャ、インタラクションフィードバック
  2. アクセシビリティ: WCAG 2.1 AA基準、キーボード操作、カラーコントラスト
  3. 一貫性: 既存パターン/デザインシステムとの整合、トーン&ボイス
  4. ユーザーフロー: ハッピーパスの自然さ、離脱時の復帰導線、初回/熟練者の両対応
  5. エラー体験: エラーメッセージの具体性、インラインバリデーション、破壊的操作の確認
  6. 状態デザイン: Empty State、ローディング状態、マイクロインタラクション

出力形式

{
  "confidence": 0-100,
  "issues": [
    {
      "severity": "critical|important|optional",
      "message": "問題の説明",
      "suggestion": "修正提案"
    }
  ]
}

信頼スコア基準

  • 80-100: BLOCK(修正必須)
  • 50-79: WARN(警告)
  • 0-49: PASS(問題なし)
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.

  1. 9d ago First seen · 39 lines · 33 tokens per session scan A 082243a22517

Subscribe to this mod's changes

usability-reviewer is an agent published in the GitHub repository morodomi/tdd-skills (8 stars, last pushed 6mo ago), licensed MIT. It adds 33 tokens to every session and 371 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.

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