Threads Comments API

Please help me write a data collection script with the EveryInfra Threads Comments endpoint (threads/comments).

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 threads and action to comments, and put the parameters inside params.
- Required parameters:
  - url: Specifies the full post URL (e.g., https://www.threads.com/@username/post/POST_CODE) for post_detail and comments actions. The comments action does not guarantee extraction of all nested comment threads.
- Optional parameters:
  - limit: The most rows to return in this call, an integer of 1 or more. The default applies when you leave it out, and a call can return fewer rows.
- Returns a list of records. Main fields of each record: id, url, text, author_username, author_name, author_is_verified, like_count, comment_count, reply_to, posted_at.
- Example request body:
{
  "platform": "threads",
  "action": "comments",
  "params": {
    "url": "https://www.threads.com/@openai/post/DW7RXR7EnRC"
  }
}
- 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.