{
  "message": "Welcome to the API toolkit! Here are the available endpoints:",
  "endpoints": [
    {
      "category": "Time & Location",
      "api": "/clock/:tz?",
      "description": "获取时间信息，可选时区(-12到12)。"
    },
    {
      "category": "Network",
      "api": "/ip",
      "description": "获取访客IP和国家。"
    },
    {
      "category": "Network",
      "api": "/headers",
      "description": "获取请求头。"
    },
    {
      "category": "Network",
      "api": "/user-agent",
      "description": "获取访客User-Agent。"
    },
    {
      "category": "Network",
      "api": "/dns/:domain/:type?",
      "description": "DNS查询 (type: A, AAAA, MX, TXT等)。"
    },
    {
      "category": "Generators",
      "api": "/uuid",
      "description": "生成 v4 UUID。"
    },
    {
      "category": "Generators",
      "api": "/random/string/:len?",
      "description": "生成随机字符串。"
    },
    {
      "category": "Cryptography",
      "api": "/hash/:algo/:text",
      "description": "计算文本哈希 (md5, sha1, sha256, sha512)。"
    },
    {
      "category": "Encoding",
      "api": "/base64/:action/:text",
      "description": "Base64 编码/解码。"
    },
    {
      "category": "Graphics",
      "api": "/svg/:dims/:text?",
      "description": "生成SVG占位图。"
    },
    {
      "category": "Graphics",
      "api": "/qrcode/:text",
      "description": "生成二维码图片。"
    },
    {
      "category": "Data Tools",
      "api": "/json",
      "method": "POST",
      "description": "POST原始JSON数据进行格式化和验证。"
    },
    {
      "category": "Data Tools",
      "api": "/timestamp/:value?",
      "description": "时间戳和日期字符串互转。"
    }
  ]
}