Benchmark
androidx/androidx
Benchmarking and improving the performance of Jetpack Compose.
このスキルを使用して、パフォーマンスベースラインを測定し、PR前後の回帰を検出し、スタック代替案を比較します. An agent skill from affaan-m/ECC.
MITAuto-check passed
Install Benchmark
$ npx skills add affaan-m/ECC --skill benchmark -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install affaan-m/ECC benchmark --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/affaan-m/ECC.git skills-src && mkdir -p .claude/skills && cp -r skills-src/docs/ja-JP/skills/benchmark .claude/skills/benchmark && 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 "benchmark" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/benchmark into .claude/skills/benchmark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark", 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/affaan-m/ECC/tree/main/docs/ja-JP/skills/benchmarkType 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 affaan-m/ECC --skill benchmark -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install affaan-m/ECC benchmark --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .agents/skills && cp -r skills-src/docs/ja-JP/skills/benchmark .agents/skills/benchmark && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "benchmark" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/benchmark into .agents/skills/benchmark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark", 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 affaan-m/ECC --skill benchmark -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install affaan-m/ECC benchmark --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/docs/ja-JP/skills/benchmark .cursor/skills/benchmark && 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 "benchmark" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/benchmark into .cursor/skills/benchmark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark", 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/affaan-m/ECC.git --path docs/ja-JP/skills/benchmark--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 affaan-m/ECC --skill benchmark -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install affaan-m/ECC benchmark --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/docs/ja-JP/skills/benchmark .gemini/skills/benchmark && 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 "benchmark" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/benchmark into .gemini/skills/benchmark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark", 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 affaan-m/ECC benchmarkInstalls 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 affaan-m/ECC --skill benchmark -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .github/skills && cp -r skills-src/docs/ja-JP/skills/benchmark .github/skills/benchmark && 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 "benchmark" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/benchmark into .github/skills/benchmark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark", 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 affaan-m/ECC --skill benchmark -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install affaan-m/ECC benchmark --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/docs/ja-JP/skills/benchmark .opencode/skills/benchmark && 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 "benchmark" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/benchmark into .opencode/skills/benchmark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark", 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
benchmark- GitHub stars
- 276k
- Token cost
- ~412 tokens
- SKILL.md length
- 26 words
- Files
- 1
- Skills in repo
- 673
- Repo updated
- First seen
- Licence
- MIT
At a glance
このスキルを使用して、パフォーマンスベースラインを測定し、PR前後の回帰を検出し、スタック代替案を比較します. An agent skill from affaan-m/ECC.
- SKILL.md covers 使用時期, 動作方法, 出力 and 統合
- Calls bundle
What it does
Benchmark is an agent skill from affaan-m/ECC. このスキルを使用して、パフォーマンスベースラインを測定し、PR前後の回帰を検出し、スタック代替案を比較します。
Its SKILL.md is about 410 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond. The licence is MIT.
Example prompts
- “/benchmark”
Requirements
- Docker
What it can do on your machine
Read from SKILL.md and the folder at commit ef648e0. 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
Shell commands in SKILL.md call:
bundle
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
Benchmark loads about 412 tokens when it runs. Until then it costs about 16 tokens; SKILL.md has 26 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 affaan-m/ECC at commit ef648e0, republished under its MIT licence (© affaan-m). 26 words, ~412 tokens.
Download SKILL.mdSave it as
.claude/skills/benchmark/SKILL.md (or your agent's skills folder).- name
- benchmark
- description
- このスキルを使用して、パフォーマンスベースラインを測定し、PR前後の回帰を検出し、スタック代替案を比較します。
- origin
- ECC
ベンチマーク — パフォーマンスベースラインと回帰検出
使用時期
- PR前後にパフォーマンスへの影響を測定
- プロジェクトのパフォーマンスベースラインを設定
- ユーザーが「遅く感じる」と報告したとき
- ローンチ前 — パフォーマンスターゲットを満たしていることを確認
- スタックを代替案と比較
動作方法
モード1：ページパフォーマンス
ブラウザMCPを介してリアルブラウザメトリクスを測定：
1. 各ターゲットURLに移動
2. Core Web Vitalsを測定：
- LCP (Largest Contentful Paint) — ターゲット < 2.5s
- CLS (Cumulative Layout Shift) — ターゲット < 0.1
- INP (Interaction to Next Paint) — ターゲット < 200ms
- FCP (First Contentful Paint) — ターゲット < 1.8s
- TTFB (Time to First Byte) — ターゲット < 800ms
3. リソースサイズを測定：
- 合計ページウェイト（ターゲット < 1MB）
- JSバンドルサイズ（ターゲット < 200KBgzipped）
- CSSサイズ
- 画像ウェイト
- サードパーティスクリプトウェイト
4. ネットワークリクエストをカウント
5. レンダリングブロッキングリソースをチェックモード2：APIパフォーマンス
APIエンドポイントをベンチマーク：
1. 各エンドポイントに100回ヒット
2. 測定：p50、p95、p99レイテンシ
3. トラック：レスポンスサイズ、ステータスコード
4. ロード下でテスト：10個の同時リクエスト
5. SLAターゲットと比較モード3：ビルドパフォーマンス
開発フィードバックループを測定：
1. コールドビルド時間
2. ホットリロード時間（HMR）
3. テストスイート期間
4. TypeScriptチェック時間
5. Lint時間
6. Dockerビルド時間モード4：前後の比較
変更前後に実行して影響を測定：
/benchmark baseline # 現在のメトリクスを保存
# ... 変更を加える ...
/benchmark compare # ベースラインと比較出力：
| Metric | Before | After | Delta | Verdict |
|--------|--------|-------|-------|---------|
| LCP | 1.2s | 1.4s | +200ms | WARNING: WARN |
| Bundle | 180KB | 175KB | -5KB | ✓ BETTER |
| Build | 12s | 14s | +2s | WARNING: WARN |出力
.ecc/benchmarks/にJSONとしてベースラインを保存。Gitで追跡されるため、チームはベースラインを共有します。
統合
- CI：すべてのPRで
/benchmark compareを実行 /canary-watchとペアリングしてデプロイ後の監視/browser-qaとペアリングして完全な出荷前チェックリスト
© affaan-m, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in docs/ja-JP/skills/benchmark of affaan-m/ECC.
Open the folder on GitHubat commit ef648e0
Compare with similar skills
Benchmark 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 |
|---|---|---|---|---|---|---|
| Benchmark this skillaffaan-m/ECC | 276k | — | ~412 | Automated safety check: Pass | MIT | |
| Benchmarkandroidx/androidx | 6.1k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| Benchmarksamchon/typia | 5.9k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Gstack Performance Benchmarkgarrytan/gstack | 136k | — | ~7.3k | Automated safety check: Notes | MIT | |
| Benchmarkzalando/skipper | 3.3k | — | ~304 | Automated safety check: Pass | MIT | |
| Agent Benchmark Suiteruvnet/ruflo | 74k | 2 repos | ~4.9k | Automated safety check: Pass | MIT |
Similar skills
Benchmark
samchon/typia
Defines typia benchmark fixture integrity, result reporting, and publication safeguards.
Gstack Performance Benchmark
garrytan/gstack
Establishes page load, Core Web Vitals and resource-size baselines, then compares before and after on every pull request to track performance trends over time.
Benchmark
zalando/skipper
Create or modify hot-path code or optimizations should be validated by a Go Benchmark
Agent Benchmark Suite
ruvnet/ruflo
Agent skill for benchmark-suite - invoke with $agent-benchmark-suite
Agent Performance Benchmarker
ruvnet/ruflo
Agent skill for performance-benchmarker - invoke with $agent-performance-benchmarker
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Questions about Benchmark
What does Benchmark do?
このスキルを使用して、パフォーマンスベースラインを測定し、PR前後の回帰を検出し、スタック代替案を比較します. An agent skill from affaan-m/ECC. Benchmark is an agent skill from affaan-m/ECC.
How do I install Benchmark in Claude Code?
Run `npx skills add affaan-m/ECC --skill benchmark -a claude-code`. Or copy the skill folder (docs/ja-JP/skills/benchmark in affaan-m/ECC) into .claude/skills/benchmark in your project. Claude Code loads it when a task matches its description.
How do I install Benchmark in Codex?
Run `npx skills add affaan-m/ECC --skill benchmark -a codex`. Or copy the skill folder (docs/ja-JP/skills/benchmark in affaan-m/ECC) into .agents/skills/benchmark in your project. Codex loads it when a task matches its description.
Can I use Benchmark 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 affaan-m/ECC --skill benchmark -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/benchmark, .gemini/skills/benchmark, .github/skills/benchmark and .opencode/skills/benchmark in your project.
What does Benchmark need to run?
Going by SKILL.md and its folder, Benchmark needs the command-line tools its instructions call (bundle). Our summary lists: Docker.
Does Benchmark 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 Benchmark 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 Benchmark use?
Benchmark is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Benchmark use?
About 412 tokens (SKILL.md is roughly 1.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Benchmark?
Skills that share tags, products or a category with Benchmark: Benchmark (androidx/androidx, 6.1k stars), Benchmark (samchon/typia, 5.9k stars), Gstack Performance Benchmark (garrytan/gstack, 136k stars) and Benchmark (zalando/skipper, 3.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Benchmark?
affaan-m (a GitHub user) maintains it in affaan-m/ECC, which has 275,546 GitHub stars. The repository holds 673 skills in this directory. The repository was last updated on October 5, 2026.
Source: affaan-m/ECC on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.