{
  "name": "bmi",
  "description": "输入身高（cm）和体重（kg），计算 BMI 指数，判断体重状态",
  "category": "实用工具",
  "ui_url": "/tools/bmi/",
  "api_url": "/api/bmi/",
  "method": "POST",
  "parameters": {
    "height": { "type": "number", "required": true, "description": "身高（厘米）" },
    "weight": { "type": "number", "required": true, "description": "体重（公斤）" }
  },
  "response": {
    "bmi": "BMI 值",
    "category": "体重状态",
    "tip": "健康建议",
    "healthy_range": "健康体重范围"
  },
  "example": { "height": 170, "weight": 65 }
}