技能缺 MCP 时，在 agents/openai.yaml 声明依赖
features.skill_mcp_dependency_install 默认开。声明只负责装上工具，工作流仍要写进 SKILL.md。
技能目录里放 agents/openai.yaml：
interface:
display_name: "Docs lookup"
short_description: "Search OpenAI developer docs"
policy:
allow_implicit_invocation: true
dependencies:
tools:
- type: "mcp"
value: "openaiDeveloperDocs"
description: "OpenAI Docs MCP server"
transport: "streamable_http"
url: "https://developers.openai.com/mcp"
value 是服务器名。默认会提示安装缺失依赖；不想弹窗：
[features]
skill_mcp_dependency_install = false
依赖不会替代技能正文。SKILL.md 仍要写清用哪个工具、顺序、结果缺失怎么办。禁隐式调用把 allow_implicit_invocation 设成 false，$ 显式调用仍然可用。