Douyin Xingtu creator conversion ability API

Please help me write a data collection script with the EveryInfra Douyin Xingtu creator conversion ability endpoint (douyin/xingtu_conversion_ability).

How the endpoint works:
- Request: POST https://api.everyinfra.com/api/v1/social with the header Authorization: Bearer <API key>. Read the key from the EVERYINFRA_API_KEY environment variable and never hard-code it.
- In the request body, set platform to douyin and action to xingtu_conversion_ability, and put the parameters inside params.
- Required parameters:
  - douyin_id: The creator's visible Douyin ID (unique_id, from creator_search) or the 19-digit Xingtu creator_id returned by xingtu_creator_search. A creator who is not on Xingtu gives an empty result, which is not charged.
- Optional parameters:
  - time_window: Period of the Xingtu figures: 7d, 30d (default) or 90d, counted back from today. It is not the ranking period of xingtu_creator_rankings. (allowed: 30d / 7d / 90d)
- Returns one object. Main fields: creator_id, time_window (Period of the figures (xingtu_conversio…), related_video_count (Videos Xingtu used for the conversion f…), video_play_median (Median plays of those videos (xingtu_co…), component_click_count_range (Component click range in Xingtu's wordi…), component_click_rate_range (Component click-rate range (xingtu_conv…), cpc_range_cny (Cost-per-click range in yuan (xingtu_co…), gpm_range_cny (GPM range in yuan, sales per thousand p…), average_sales_range_cny (Average sales range in yuan (xingtu_con…), product_count (Products the creator promoted in the pe…), product_price_range_cny (Price range of those products in yuan (…), categories (On xingtu_conversion_ability, the promo…).
- Example request body:
{
  "platform": "douyin",
  "action": "xingtu_conversion_ability",
  "params": {
    "douyin_id": "XiaoZhenlla"
  }
}
- Price: $1.6 per 1,000 requests; failed and empty results are not charged.
- For dozens or hundreds of targets, add "mode": "async" to the body: you get a job_id at once and poll GET https://api.everyinfra.com/api/v1/jobs/{job_id} for the result.
- On 422, fix the request using the suggested parameter names and allowed values in the error; on 429 or 503, wait for Retry-After and try again.

Before writing code, ask me which targets I need, how many, which fields, and what output format I want; then confirm the plan and the rough cost with me.