Coss
crafter-station/petdex
Helps implement coss UI components correctly. An agent skill from crafter-station/petdex.
フロントエンド観点のレビューエージェント. An agent skill from hashgraph-online/awesome-codex-plugins.
Install River Review Frontend
$ npx skills add hashgraph-online/awesome-codex-plugins --skill river-review-frontend -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins river-review-frontend --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/s977043/river-review/skills/agent-skills/river-review-frontend .claude/skills/river-review-frontend && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "river-review-frontend" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/s977043/river-review/skills/agent-skills/river-review-frontend into .claude/skills/river-review-frontend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "river-review-frontend", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/s977043/river-review/skills/agent-skills/river-review-frontendType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill river-review-frontend -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins river-review-frontend --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/s977043/river-review/skills/agent-skills/river-review-frontend .agents/skills/river-review-frontend && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "river-review-frontend" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/s977043/river-review/skills/agent-skills/river-review-frontend into .agents/skills/river-review-frontend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "river-review-frontend", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill river-review-frontend -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins river-review-frontend --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/s977043/river-review/skills/agent-skills/river-review-frontend .cursor/skills/river-review-frontend && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "river-review-frontend" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/s977043/river-review/skills/agent-skills/river-review-frontend into .cursor/skills/river-review-frontend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "river-review-frontend", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/hashgraph-online/awesome-codex-plugins.git --path plugins/s977043/river-review/skills/agent-skills/river-review-frontend--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill river-review-frontend -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins river-review-frontend --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/s977043/river-review/skills/agent-skills/river-review-frontend .gemini/skills/river-review-frontend && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "river-review-frontend" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/s977043/river-review/skills/agent-skills/river-review-frontend into .gemini/skills/river-review-frontend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "river-review-frontend", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install hashgraph-online/awesome-codex-plugins river-review-frontendInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add hashgraph-online/awesome-codex-plugins --skill river-review-frontend -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/s977043/river-review/skills/agent-skills/river-review-frontend .github/skills/river-review-frontend && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "river-review-frontend" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/s977043/river-review/skills/agent-skills/river-review-frontend into .github/skills/river-review-frontend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "river-review-frontend", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill river-review-frontend -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins river-review-frontend --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/s977043/river-review/skills/agent-skills/river-review-frontend .opencode/skills/river-review-frontend && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "river-review-frontend" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/s977043/river-review/skills/agent-skills/river-review-frontend into .opencode/skills/river-review-frontend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "river-review-frontend", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
river-review-frontend- GitHub stars
- 1.3k
- Token cost
- ~2.2k tokens
- SKILL.md length
- 316 words
- Files
- 2 (incl. references)
- Skills in repo
- 716
- Repo updated
- First seen
- Licence
- MIT
At a glance
フロントエンド観点のレビューエージェント. An agent skill from hashgraph-online/awesome-codex-plugins.
- Tasks that involve CSS and styling
- SKILL.md covers When to Use / いつ使うか, Routing / ルーティング, Execution Flow / 実行フロー and Checklist / チェックリスト, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
River Review Frontend is an agent skill from hashgraph-online/awesome-codex-plugins. フロントエンド観点のレビューエージェント。 アクセシビリティ、デザインシステム準拠、Tailwind クラス衛生、UI 状態設計、 Next.js / React Router のフレームワーク境界を個別スキルへルーティングする。
Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/ROUTING.md`).
It sits in Frontend & Design, covering CSS and styling. It works with Next.js, React Router and Tailwind CSS. The repository describes itself as: A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The 1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins. The licence is MIT.
When your agent uses it
- Tasks that involve CSS and styling
Example prompts
- “/river-review-frontend”
What it can do on your machine
Read from SKILL.md and the folder at commit 3e1456a. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
River Review Frontend loads about 2.2k tokens when it runs, and up to ~4k if it reads all its reference files. Until then it costs about 34 tokens; SKILL.md has 316 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from hashgraph-online/awesome-codex-plugins at commit 3e1456a, republished under its MIT licence (© hashgraph-online). 316 words, ~2,173 tokens.
Download SKILL.mdSave it as
.claude/skills/river-review-frontend/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- river-review-frontend
- description
- フロントエンド観点のレビューエージェント。 アクセシビリティ、デザインシステム準拠、Tailwind クラス衛生、UI 状態設計、 Next.js / React Router のフレームワーク境界を個別スキルへルーティングする。
- id
- river-review-frontend
- category
- midstream
- phase
- midstream
- severity
- minor
- applyTo
- src/**/*.{tsx,jsx,vue,svelte}, src/routes/**/*.{ts,tsx,js,jsx}, app/**/*.{ts,tsx,js,jsx}, components/**/*.{ts,tsx,js,jsx}, **/*.{css,scss,less}…
- inputContext
- diff, fullFile
- outputKind
- findings, actions
- tags
- frontend, ui, accessibility, design-system, entry, routing
- version
- 0.1.0
- license
- MIT
Frontend Review（フロントエンドレビュー）
UI/コンポーネント変更に影響するアクセシビリティ、デザインシステム準拠、フレームワーク境界を検出し、適切な個別スキルで検証する。
frontend-reviewer（review-team perspective ロール）とは別物:src/lib/reviewer-orchestrator.mjsのfrontend-reviewerは review-team のマルチエージェントレビューで Claude/Codex が演じる perspective ロール（UI/component/styling ファイル検知時に自動追加）。本スキルは agent-skills ルーター群の一員で、キーワードから個別 registry skill へルーティングする別サーフェス。2つは独立して動作し、互いを呼び出さない。
When to Use / いつ使うか
- UI コンポーネント・スタイリングの変更時
- アクセシビリティ（a11y）に関わる変更時
- デザインシステム・デザイントークンの準拠確認が必要なとき
- Tailwind クラスの衛生確認が必要なとき
- Next.js App Router / React Router のフレームワーク境界チェックが必要なとき
- 他の専門エージェント（architecture, security, performance, testing, code）に該当しない UI 固有の懸念があるとき
Routing / ルーティング
| キーワード | スキルID | 説明 |
|---|---|---|
| a11y, アクセシビリティ, alt属性, aria-label | a11y-accessible-name | アクセシビリティ基本 |
| キーボード操作, フォーカス管理, ARIA role | modern-web-a11y-interactive | インタラクティブ UI アクセシビリティ |
| セマンティック, div クリック, ネイティブ要素 | modern-web-semantic | セマンティック HTML・プラットフォームネイティブ |
| ブラウザ互換, Baseline, feature detection | modern-web-browser-compat | ブラウザ互換性・Baseline |
| デザインシステム, コンポーネント再利用, Button | design-system-component-reuse | デザインシステム コンポーネント再利用 |
| デザイントークン, 色の直書き, 余白, 角丸 | design-token-enforcement | デザイントークン |
| DESIGN.md, デザイン定義準拠, スケール逸脱 | design-source-conformance | デザイン Source-of-Truth 準拠 |
| Tailwind, 任意値, クラス衛生 | tailwind-class-hygiene | Tailwind クラス衛生 |
| ローディング, 空状態, スピナー, 状態欠落 | loading-state | ローディング状態遷移 |
| コンポーネントバリアント, hover, focus, disabled | component-variants-states | コンポーネント状態の文書化 |
| Next.js, App Router, use client | nextjs-app-router-boundary | Next.js App Router 境界 |
| React Router, loader, useEffect データ取得 | react-router-loader-boundary | React Router loader 境界 |
| React Router, action, ErrorBoundary | react-router-action-contract | React Router action 契約 |
| Core Web Vitals, LCP, INP, CLS | modern-web-performance | 参照のみ。実行は river-review-performance（理由） |
デフォルト動作
- キーワード指定なし → 以下のヒューリスティクスで判定:
- React/Vue/Svelte コンポーネントファイル →
a11y-accessible-name+modern-web-a11y-interactive app/ディレクトリ（Next.js App Router）→nextjs-app-router-boundaryroutes/ディレクトリ（React Router）→react-router-loader-boundary+react-router-action-contract- CSS/Tailwind ファイル →
design-token-enforcement+tailwind-class-hygiene
- React/Vue/Svelte コンポーネントファイル →
modern-web-performance の帰属について
14 候補スキルのうち modern-web-performance（Core Web Vitals / LCP / INP / CLS）は UI 起因の懸念だが、ドメイン一貫性を優先し実行は owner skill river-review-performance に据え置く。詳細判断が必要な場合だけ skill ID で owner を解決し、その owner-local routing contract に従う。owner を解決できない場合は performance の詳細判断を推測で再構築しない。本表には到達性のための参照行として掲載するのみで、frontend 側に重複するアクティブなキーワードルートは追加しない（同一キーワードが2ルーターで競合発火するリスクを避けるため）。
Execution Flow / 実行フロー
1. 変更内容の分類
├─ キーワード指定あり → 該当スキルを直接選択
├─ コンポーネントファイル → a11y-accessible-name + modern-web-a11y-interactive を優先
├─ app/ ディレクトリ → nextjs-app-router-boundary を追加
├─ routes/ ディレクトリ → react-router-loader-boundary + react-router-action-contract を追加
└─ CSS/Tailwind ファイル → design-token-enforcement + tailwind-class-hygiene を追加
2. スキルの実行
├─ a11y-accessible-name: アクセシビリティ基本
├─ modern-web-a11y-interactive: インタラクティブ UI アクセシビリティ
├─ modern-web-semantic: セマンティック HTML・プラットフォームネイティブ
├─ modern-web-browser-compat: ブラウザ互換性・Baseline
├─ design-system-component-reuse: デザインシステム コンポーネント再利用
├─ design-token-enforcement: デザイントークン
├─ design-source-conformance: デザイン Source-of-Truth 準拠
├─ tailwind-class-hygiene: Tailwind クラス衛生
├─ loading-state: ローディング状態遷移
├─ component-variants-states: コンポーネント状態の文書化
├─ nextjs-app-router-boundary: Next.js App Router 境界
├─ react-router-loader-boundary: React Router loader 境界
└─ react-router-action-contract: React Router action 契約
3. 統合
├─ 重複する指摘の除去
└─ Checklistに基づく UI 品質チェックの補完Checklist / チェックリスト
フロントエンドレビューでは以下を確認する:
アクセシビリティ
- alt / aria-label / label 関連付けが欠けていないか
- キーボード操作・フォーカス管理・ライブリージョンが機能するか
- セマンティックでない要素（div onClick 等）を native 要素に置き換えられないか
デザインシステム / トークン
- 既存コンポーネント（Button / Input / Modal / Card 等）の再実装がないか
- 色・余白・フォントサイズ・角丸・シャドウがデザイントークン / DESIGN.md のスケールに準拠しているか
- Tailwind の任意値（arbitrary value）がテーマスケールを迂回していないか
UI 状態設計
- loading / error / empty state の表示が欠けていないか
- コンポーネントの variants・インタラクティブ状態（hover / focus / disabled）が定義・文書化されているか
フレームワーク境界
- Next.js App Router のサーバー/クライアントコンポーネント境界（
use client）が適切か - React Router の loader/action 契約（データ取得は loader、
useEffectフェッチの誤用、action のエラー表現と ErrorBoundary）を満たすか
Output Format / 出力形式
<file>:<line>: <message>- Finding: 何が問題か（1文）
- Impact: 何が困るか（短く）
- Fix: 次の一手（最小の修正案）
他スキルとの関係
| スキル | 関係 | 棲み分け |
|---|---|---|
river-review-code | 補完 | frontend は「UI 固有の懸念」、code は「一般コード品質」。UI 系ルートは frontend に一元化済み（二重発火なし） |
river-review-performance | 補完 | frontend は「UI 表現」、performance は「実行効率」。modern-web-performance は performance に据置 |
river-review-architecture | 補完 | frontend は「コンポーネント単位」、architecture は「マクロ設計」 |
References
- ROUTING.md: 詳細なルーティングルール
- UX-SAFEGUARD（report-only）: 破壊的操作の確認・取り消し / エラー回復支援が論点のときだけ owner skill
river-review-codeを skill ID で解決し、その owner-localUX-SAFEGUARD.mdを読む（#1460）。owner を解決できない場合はこの補助観点を推測で再構築せずスキップする。loading-state/component-variants-states/react-router-action-contractの委譲判断も owner 側を正本とする
© hashgraph-online, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in plugins/s977043/river-review/skills/agent-skills/river-review-frontend of hashgraph-online/awesome-codex-plugins.
- SKILL.md
- references/ROUTING.md
Open the folder on GitHubat commit 3e1456a
Compare with similar skills
River Review Frontend next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| River Review Frontend this skillhashgraph-online/awesome-codex-plugins | 1.3k | — | ~2.2k | Automated safety check: Pass | MIT | |
| Cosscrafter-station/petdex | 4.2k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Design StyleCastor6/tactus | 376 | 1 repos | ~2.1k | Automated safety check: Pass | Apache-2.0 | |
| Opensource UIbidyut10/opensourceui | 720 | — | ~1.1k | Automated safety check: Pass | MIT | |
| UI UX Pro Maxsundial-org/awesome-openclaw-skills | 663 | 2 repos | ~657 | Automated safety check: Pass | None | |
| Bmm Iconify IconsY80/bmm | 344 | — | ~810 | Automated safety check: Pass | MIT |
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Questions about River Review Frontend
What does River Review Frontend do?
フロントエンド観点のレビューエージェント. An agent skill from hashgraph-online/awesome-codex-plugins. River Review Frontend is an agent skill from hashgraph-online/awesome-codex-plugins.
When should I use River Review Frontend?
River Review Frontend fits situations like: tasks that involve CSS and styling.
How do I install River Review Frontend in Claude Code?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill river-review-frontend -a claude-code`. Or copy the skill folder (plugins/s977043/river-review/skills/agent-skills/river-review-frontend in hashgraph-online/awesome-codex-plugins) into .claude/skills/river-review-frontend in your project. Claude Code loads it when a task matches its description.
How do I install River Review Frontend in Codex?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill river-review-frontend -a codex`. Or copy the skill folder (plugins/s977043/river-review/skills/agent-skills/river-review-frontend in hashgraph-online/awesome-codex-plugins) into .agents/skills/river-review-frontend in your project. Codex loads it when a task matches its description.
Can I use River Review Frontend in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add hashgraph-online/awesome-codex-plugins --skill river-review-frontend -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/river-review-frontend, .gemini/skills/river-review-frontend, .github/skills/river-review-frontend and .opencode/skills/river-review-frontend in your project.
What does River Review Frontend need to run?
SKILL.md names no scripts, command-line tools or credentials: River Review Frontend is instructions for the agent only.
Does River Review Frontend access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is River Review Frontend safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does River Review Frontend use?
River Review Frontend is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does River Review Frontend use?
About 2.2k tokens (SKILL.md is roughly 8.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.8k tokens, read only when the agent opens those files.
What are the alternatives to River Review Frontend?
Skills that share tags, products or a category with River Review Frontend: Coss (crafter-station/petdex, 4.2k stars), Design Style (Castor6/tactus, 376 stars), Opensource UI (bidyut10/opensourceui, 720 stars) and UI UX Pro Max (sundial-org/awesome-openclaw-skills, 663 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains River Review Frontend?
hashgraph-online (a GitHub organization) maintains it in hashgraph-online/awesome-codex-plugins, which has 1,267 GitHub stars. The repository holds 716 skills in this directory. The repository was last updated on October 10, 2026.
Source: hashgraph-online/awesome-codex-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.