关键词搜索量 API（KEYWORD_VOLUME）

curl -X POST https://api.querying.ai/v1/async/task \
  -H "Authorization: Bearer $QUERYING_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "taskType": "KEYWORD_VOLUME", "payload": { "keywords": ["sunscreen", "mineral sunscreen"], "country": "US" } }'

{
  "country": "US",
  "source": "google_ads",
  "fetchedAt": "2026-10-09T13:05:12.000Z",
  "keywords": [
    {
      "keyword": "sunscreen",
      "searchVolume": 110000,
      "monthlySearches": [
        { "month": "2025-09", "searchVolume": 74000 },
        { "month": "2026-08", "searchVolume": 135000 }
      ],
      "last30Days": null,
      "competition": "high"
    }
  ]
}