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.
npx agentmods add instructions/noboru-i/web-development-toolbox/copilot-instructionsgit clone --depth 1 https://github.com/noboru-i/web-development-toolboxWhat 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 | $0.00280 | $0.00280 |
| Opus 5 | $0.00140 | $0.00140 |
| Sonnet 5 | $0.00056 | $0.00056 |
| Haiku 4.5 | $0.00028 | $0.00028 |
Grade A, and why
web-development-toolbox copilot-instructions.md 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 2d 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.
What it actually says
Web Development Toolbox コーディング規約
このドキュメントは、このプロジェクトのコーディング規約とベストプラクティスをまとめたものです。 GitHub Copilot はこの指示に従ってコード生成やサポートを提供します。
コーディング規則
- コードのコメントは必ず英語で記述してください
- 変数名や関数名は英語で、意味が明確になるように命名してください
- コードは可読性を重視し、適切なインデントとフォーマットを使用してください
TypeScript コーディングスタイル
- 関数は可能な限り単一責任の原則に従って設計してください
- 複雑なロジックは独立した関数として切り出してください
- 型定義は明示的に行い、
anyの使用は避けてください - 関数には適切な JSDoc コメントを英語で付けてください
- エクスポートする関数と内部関数を明確に区別してください
JSDoc コメント形式
コメントは JSDoc タグを活用して記載してください
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.
- 2d ago First seen · 23 lines · 280 tokens per session scan A 6d28b3d6b0b6
web-development-toolbox copilot-instructions.md is an instructions file published in the GitHub repository noboru-i/web-development-toolbox (5 stars, last pushed 1y ago), licensed MIT. It adds 280 tokens to every session, about $0.0014 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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openbridge-webcomponents docgen.instructions.md
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