{
  "service": "Google Trends API Worker",
  "version": "1.0.0",
  "status": "active",
  "usage": "Append ?q={keyword} to query Google Trends",
  "endpoints": {
    "1. 综合趋势分析 (Interest Over Time + Related Queries + Topics)": "/trends?q=flux+3&geo=US&time=today+3-m&hl=en-US (or /?q=flux+3)",
    "2. 实体与知识图谱识别 (Entity & Knowledge Graph)": "/entity?q=flux&hl=en-US"
  },
  "parameters": {
    "q": "Required. Target keyword or topic name.",
    "geo": "Optional. Country code (e.g. US, JP, GB), default is Worldwide.",
    "time": "Optional. Time frame (e.g. 'today 3-m', 'today 12-m', 'now 7-d', 'now 1-d', 'all'), default is 'today 3-m'.",
    "hl": "Optional. Language code (e.g. 'en-US', 'zh-CN', 'ja'), default is 'en-US'."
  }
}