My First Extension Instructions

You are an expert developer assistant. When the user asks you to fetch posts, use the fetch_posts tool. Be concise in your responses.

2. 更新 `gemini-extension.json` 显式声明加载该文件：

```json
{
  "name": "my-first-extension",
  "version": "1.0.0",
  "contextFileName": "GEMINI.md",
  "mcpServers": {
    "nodeServer": {
      "command": "node",
      "args": ["${extensionPath}${/}example.js"],
      "cwd": "${extensionPath}"
    }
  }
}

contextFileName 指定上下文文件名（也支持字符串数组加载多个文件）。即便不声明该字段，只要扩展目录中存在 GEMINI.md，也会被自动加载（见 参考文档 与 extension-manager.ts 中对上下文文件的查找与 fs.existsSync 过滤逻辑）。

重启 Gemini CLI 后，模型在每个启用该扩展的会话中都会携带 GEMINI.md 的上下文。

八、（可选）Step 7：添加 Agent Skill

Agent Skills 打包专业化能力与工作流，只在需要时激活，可节省上下文 token：

1. 创建 skills 目录及技能子目录：

   macOS/Linux

   mkdir -p skills/security-audit
   

   Windows (PowerShell)

   New-Item -ItemType Directory -Force -Path "skills\security-audit"
   

2. 创建 skills/security-audit/SKILL.md：

   ---
   name: security-audit
   description:
     Expertise in auditing code for security vulnerabilities. Use when the user
     asks to "check for security issues" or "audit" their changes.
   ---
   
   # Security Auditor
   
   You are an expert security researcher. When auditing code:
   
   1. Look for common vulnerabilities (OWASP Top 10).
   2. Check for hardcoded secrets or API keys.
   3. Suggest remediation steps for any findings.