Borrowing it
Nothing to install: this file belongs to philtzjp/live-connector. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/philtzjp/live-connector/main/.agents/skills/api-design/SKILL.mdgit clone --depth 1 https://github.com/philtzjp/live-connectorWrote 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.
[](https://agentmods.dev/skills/philtzjp/live-connector/api-design)<a href="https://agentmods.dev/skills/philtzjp/live-connector/api-design"><img src="https://agentmods.dev/badge/skills/philtzjp/live-connector/api-design.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00132 | $0.00605 |
| Opus 5 | $0.00066 | $0.00302 |
| Sonnet 5 | $0.00026 | $0.00121 |
| Haiku 4.5 | $0.00013 | $0.00060 |
Grade A, and why
api-design 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 6d 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
API 設計
- MUST: OpenAPI に準拠する
- MUST: エラーレスポンスの構造を RFC 9457 に準拠させる
- MUST: URL パスバージョニングを使用する（例:
/api/v1/） - SHOULD: パスはできる限り短くする; IF: やむを得ない場合; THEN MUST:
kebab-caseを使用する - MUST: 単数形の名詞を使用する（
/usersではなく/user） - MUST: ネットワークに公開される API は Bearer 認証を使用する; IF: loopback（localhost）にのみバインドするローカルサービス; THEN MAY: Bearer 認証に代えて Origin / Host ヘッダ検証で保護する（DNS リバインディング対策）
- MUST: ヘルスチェックエンドポイントの構造を draft-inadarei-api-health-check に準拠させる
- MUST: Spectral を使用して API をリントする
- MUST: プロジェクトの HTTP サーバー層は単一の構成に統一する; MAY: フレームワーク（例: Hono）を採用する、またはフレームワークを使わずランタイム標準のサーバー（例: Node.js の
http）で実装する; IF: MCP サーバーを構築; THEN MUST: 採用した HTTP 層に対応する MCP トランスポートを使用する（フレームワーク採用時はそのアダプタ。例: Hono なら@hono/mcp。フレームワーク不採用時は SDK 同梱トランスポート。例: TypeScript SDK のStreamableHTTPServerTransport）
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.
- 6d ago First seen · 16 lines · 132 tokens per session scan A 9dbcd44197cf
api-design is a skill published in the GitHub repository philtzjp/live-connector (4 stars, last pushed 2mo ago), licensed MIT. It adds 132 tokens to every session and 605 once invoked, about $0.0007 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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