Toutiao Posts by user API

Please help me write a data collection script with the EveryInfra Toutiao Posts by user endpoint (toutiao/user_posts).

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 toutiao and action to user_posts, and put the parameters inside params.
- Required parameters:
  - user_id: Target user profile token or secUid, typically starting with MS4w. A full Toutiao profile URL can also be passed in this field. It does not accept display nicknames or short numeric UIDs.
- Optional parameters:
  - tab: Selects the profile feed tab in user_posts. Allowed values are all (default), article, video, ugc, and short_video. It does not alter item detail types.
  - limit: The most rows to return in this call, an integer from 1 to 100. The default applies when you leave it out, and a call can return fewer rows. Larger values return 422 before any charge. (default: 20)
- Returns a list of records. Main fields of each record: id, url, type, title, text, content_text, cover, read_count, play_count, like_count, comment_count, share_count; 22 fields in total, full list at https://api.everyinfra.com/api/v1/social/catalog?platform=toutiao.
- Example request body:
{
  "platform": "toutiao",
  "action": "user_posts",
  "params": {
    "user_id": "MS4wLjABAAAA3KU9ifwN12G41E6PJRpZgIfzVrXWQ4WPF66ns54c0uw"
  }
}
- 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.