Douyin Video details API

Please help me write a data collection script with the EveryInfra Douyin Video details endpoint (douyin/video).

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 douyin and action to video, and put the parameters inside params.
- Required parameters:
  - url: Full URL of the target Douyin video, formatted as https://www.douyin.com/video/<video_id>. Fetches video details in video, comments in comments, or audio transcripts in transcript.
- Returns one object. Main fields: id, url, text, media_type (Media type: video, or image for image p…), video_url (Video playback URL (signed, expires), like_count, comment_count, share_count, collect_count, author_name, author_id, author_douyin_id (The author's Douyin ID); 40 fields in total, full list at https://api.everyinfra.com/api/v1/social/catalog?platform=douyin.
- Example request body:
{
  "platform": "douyin",
  "action": "video",
  "params": {
    "url": "https://www.douyin.com/video/7633646113853104116"
  }
}
- 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.