TikTok Videos by user API

Please help me write a data collection script with the EveryInfra TikTok Videos by user endpoint (tiktok/user_videos).

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 user_videos, 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:
  - min_likes: Numeric threshold filtering videos by minimum like count. It applies to user_videos only and does not filter author follower counts or comment like thresholds.
  - sort: Sorts author video lists in the user_videos action. Allowed values are newest, oldest, and popular. It applies to user_videos only. (allowed: newest / oldest / popular)
  - until: Sets an upper date bound for video publication time rather than data ingestion time. It applies to user_videos only.
  - limit: The most rows to return in this call, an integer from 1 to 50. The default applies when you leave it out, and a call can return fewer rows. Larger values return 422 before any charge. (default: 10)
- Returns a list of records. Main fields of each record: id, url, text, author_name, author_username, like_count, comment_count, share_count, view_count, posted_at.
- Example request body:
{
  "platform": "tiktok",
  "action": "user_videos",
  "params": {
    "username": "nasa"
  }
}
- 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.