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 skills/forest6511/claude-code-recipes-v2/api-designnpx skills add forest6511/claude-code-recipes-v2 --skill api-designgit clone --depth 1 https://github.com/forest6511/claude-code-recipes-v2Wrote 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/forest6511/claude-code-recipes-v2/api-design)<a href="https://agentmods.dev/skills/forest6511/claude-code-recipes-v2/api-design"><img src="https://agentmods.dev/badge/skills/forest6511/claude-code-recipes-v2/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 | $0.00018 | $0.00269 |
| Opus 5 | $0.00009 | $0.00134 |
| Sonnet 5 | $0.00004 | $0.00054 |
| Haiku 4.5 | $0.00002 | $0.00027 |
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 4d 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
要件: $ARGUMENTS
設計原則
- リソース指向: 名詞単位でパス設計 (例:
users,ordersリソース) - 動詞は HTTP メソッドで表現 (GET / POST / PUT / PATCH / DELETE)
- ネスト深さは2階層まで (例:
users/{id}/ordersは OK、users/{id}/orders/{oid}/itemsは要再設計) - ページネーションは
?page=N&size=Mまたは cursor (?cursor=xxx&limit=N) - エラーは RFC 7807 (Problem Details) 形式
出力形式
- エンドポイント一覧 (path / method / description / 認可レベル)
- 主要リソースのデータモデル (フィールド・型・必須/任意)
- 設計判断のポイント3〜5件 (なぜこの形にしたかの理由)
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.
- 4d ago First seen · 23 lines · 18 tokens per session scan A d592a2f7c3d5
api-design is a skill published in the GitHub repository forest6511/claude-code-recipes-v2 (5 stars, last pushed 4mo ago), licensed MIT. It adds 18 tokens to every session and 269 once invoked, about $0.0001 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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