TikTok Shop creator details API

Please help me write a data collection script with the EveryInfra TikTok Shop creator details endpoint (tiktok/shop_creator).

Endpoint contract:
- 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 tiktok and action to shop_creator, and put the parameters inside params.
- Required parameters:
  - username: Public TikTok handle, which may optionally include the leading @. Do not supply Douyin secUid tokens or full profile URLs. In followers, this returns follower counts.
- Optional parameters:
  - country: Market region code for shop_search and shop_creator actions, defaulting to US or us. It does not filter creator nationality or platform-wide content location. See the catalog for supported markets.
- Returns one object. Main fields: id, username, url, name, text, avatar_url, country, categories, follower_count, video_count, product_count, sold_count; 13 fields in total, full list at https://api.everyinfra.com/api/v1/social/catalog?platform=tiktok.
- Example request body:
{
  "platform": "tiktok",
  "action": "shop_creator",
  "params": {
    "username": "dealswithty"
  }
}
- Price: $0.56 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.