共 1 个 Skill，均有经来源核对的实质文档。打开卡片可阅读原始说明，了解包内文件和安装方式。
Use when writing or editing a system prompt for any LLM API or SDK (any code passing a system= / system role parameter, or a .txt/.md file holding such a prompt). Applies prompt-engineering and prompt-caching best practices.
