The TikTok data engine,
behind your product

# Your backend, 6:00 AM cron
curl 'https://openapi.fastmoss.com/product/v1/rank/topSelling' \
  --header 'Content-Type: application/json' \
  --header 'Authorization: Bearer your-key-here' \
  --data '{
    "filter": {
        "region": "US",
        "category_id": 2,
        "date_info": {
            "type": "day",
            "value": "2026-02-01"
        } },
    "orderby": [{ "field": "gmv", "order": "desc" }],
    "page": 1,
    "pagesize": 10
  }'

200 OK · 84ms
{
  "code": 0,
  "data": {
    "total": 500,
    "list": [
      {
        "product_id": "1729537665891078575",
        "title": "33.81oz Glass Water Cup",
        "real_price": "$10.94",
        "units_sold": 41280,
        "gmv": 451123,
        "growth_rate": 212
      }, ...9 more
    ]
  }
}