Agent skill

Canary Watch

by affaan-m in affaan-m/ECC

このスキルを使用して、デプロイメント、マージ、または依存関係アップグレード後にデプロイされたURLの回帰を監視します. An agent skill from affaan-m/ECC.

MITAuto-check passedDevOps & Cloud

Install Canary Watch

skills CLI
$ npx skills add affaan-m/ECC --skill canary-watch -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install affaan-m/ECC canary-watch --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ 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/canary-watch .claude/skills/canary-watch && rm -rf skills-src

Use ~/.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/

Facts

Skill name
canary-watch
GitHub stars
276k
Token cost
~405 tokens
SKILL.md length
27 words
Files
1
Skills in repo
683
Repo updated
First seen
Licence
MIT

At a glance

このスキルを使用して、デプロイメント、マージ、または依存関係アップグレード後にデプロイされたURLの回帰を監視します. An agent skill from affaan-m/ECC.

  • Tasks that involve Deployment
  • SKILL.md covers 使用時期, 動作方法, 出力 and 統合
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Canary Watch is an agent skill from affaan-m/ECC. このスキルを使用して、デプロイメント、マージ、または依存関係アップグレード後にデプロイされたURLの回帰を監視します。

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.

It sits in DevOps & Cloud, covering Deployment. 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.

When your agent uses it

  • Tasks that involve Deployment

Example prompts

  • “/canary-watch”

What it can do on your machine

Read from SKILL.md and the folder at commit 4eb71d9. 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 (its code samples are yaml and markdown).

    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

Canary Watch loads about 405 tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 27 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~18
When it runs · the whole SKILL.md, loaded when a task matches
~405

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 4eb71d9, republished under its MIT licence (© affaan-m). 27 words, ~405 tokens.

Download SKILL.mdSave it as .claude/skills/canary-watch/SKILL.md (or your agent's skills folder).
name
canary-watch
description
このスキルを使用して、デプロイメント、マージ、または依存関係アップグレード後にデプロイされたURLの回帰を監視します。
origin
ECC

カナリアウォッチ — デプロイ後の監視

使用時期

  • 本番またはステージングへのデプロイ後
  • 危険なPRをマージした後
  • 修正が実際に修正されたことを確認したい場合
  • ローンチウィンドウ中の継続的監視
  • 依存関係アップグレード後

動作方法

デプロイされたURLの回帰を監視します。停止されるか監視ウィンドウが期限切れになるまで、ループで実行されます。

監視内容
1. HTTPステータス — ページは200を返していますか?
2. コンソールエラー — 以前なかった新しいエラーはありますか?
3. ネットワークの障害 — 失敗したAPIコール、5xx応答?
4. パフォーマンス — LCP/CLS/INPの回帰対ベースライン?
5. コンテンツ — 主要な要素は消えましたか?(h1、nav、footer、CTA)
6. API健康 — 重要なエンドポイントはSLA内で応答していますか?
監視モード

クイックチェック(デフォルト):シングルパス、レポート結果

/canary-watch https://myapp.com

継続監視:N分ごとにM時間チェック

/canary-watch https://myapp.com --interval 5m --duration 2h

差分モード:ステージング対本番を比較

/canary-watch --compare https://staging.myapp.com https://myapp.com
警告しきい値
yaml
critical:  # 即座の警告
  - HTTPステータス != 200
  - コンソールエラー数 > 5(新しいエラーのみ)
  - LCP > 4s
  - APIエンドポイントは5xxを返す

warning:   # レポートで報告
  - LCP ベースラインから > 500ms増加
  - CLS > 0.1
  - 新しいコンソール警告
  - レスポンス時間 > 2xベースライン

info:      # ログのみ
  - マイナーパフォーマンス分散
  - 新しいネットワークリクエスト(サードパーティスクリプトが追加された?)
通知

重大なしきい値を超えたとき:

  • デスクトップ通知(macOS/Linux)
  • オプション:Slack/Discord Webhook
  • ~/.claude/canary-watch.logにログ

出力

markdown
## Canary Report — myapp.com — 2026-03-23 03:15 PST

### Status
- ✓ HTTP 200
- ✓ No critical errors
- ✓ LCP within SLA (1.8s)

### Diffs from Baseline
- CLS: 0.08 (↓ 0.02)
- Response: 245ms (↑ 12ms, OK)
- Network: 42 requests (↑ 3, investigate third-party?)

統合

  • /benchmarkとペアリングしてパフォーマンス比較
  • /browser-qaとペアリングして完全なUIテスト
  • CI/CDパイプラインに組み込んでオートメーション監視

© 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/canary-watch of affaan-m/ECC.

Open the folder on GitHubat commit 4eb71d9

Compare with similar skills

Canary Watch 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.

Canary Watch compared with similar skills
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Canary Watch this skillaffaan-m/ECC276k—~405Automated safety check: PassMIT
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GreptimeDB Dev Docker ImageGreptimeTeam/greptimedb6.7k—~4kAutomated safety check: NotesApache-2.0
Mirrord Operatormetalbear-co/mirrord5.4k1 repos~4.6kAutomated safety check: PassMIT
KubeSphere ServiceMesh Managerkubesphere/kubesphere17k—~2.4kAutomated safety check: PassCustom licence
Vercelremotion-dev/remotion63k—~1.2kAutomated safety check: PassCustom licence

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Categories

Questions about Canary Watch

What does Canary Watch do?

このスキルを使用して、デプロイメント、マージ、または依存関係アップグレード後にデプロイされたURLの回帰を監視します. An agent skill from affaan-m/ECC. Canary Watch is an agent skill from affaan-m/ECC.

When should I use Canary Watch?

Canary Watch fits situations like: tasks that involve Deployment.

How do I install Canary Watch in Claude Code?

Run `npx skills add affaan-m/ECC --skill canary-watch -a claude-code`. Or copy the skill folder (docs/ja-JP/skills/canary-watch in affaan-m/ECC) into .claude/skills/canary-watch in your project. Claude Code loads it when a task matches its description.

How do I install Canary Watch in Codex?

Run `npx skills add affaan-m/ECC --skill canary-watch -a codex`. Or copy the skill folder (docs/ja-JP/skills/canary-watch in affaan-m/ECC) into .agents/skills/canary-watch in your project. Codex loads it when a task matches its description.

Can I use Canary Watch 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 canary-watch -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/canary-watch, .gemini/skills/canary-watch, .github/skills/canary-watch and .opencode/skills/canary-watch in your project.

What does Canary Watch need to run?

SKILL.md names no scripts, command-line tools or credentials: Canary Watch is instructions for the agent only.

Does Canary Watch 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 Canary Watch 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 Canary Watch use?

Canary Watch 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 Canary Watch use?

About 405 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 Canary Watch?

Skills that share tags, products or a category with Canary Watch: Kubeshark Installer (kubeshark/kubeshark, 12k stars), GreptimeDB Dev Docker Image (GreptimeTeam/greptimedb, 6.7k stars), Mirrord Operator (metalbear-co/mirrord, 5.4k stars) and KubeSphere ServiceMesh Manager (kubesphere/kubesphere, 17k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Canary Watch?

affaan-m (a GitHub user) maintains it in affaan-m/ECC, which has 276,111 GitHub stars. The repository holds 683 skills in this directory. The repository was last updated on October 10, 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.