Airbnb Availability calendar API

Please help me write a data collection script with the EveryInfra Airbnb Availability calendar endpoint (airbnb/calendar).

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 airbnb and action to calendar, and put the parameters inside params.
- Required parameters:
  - url: Identifies the target resource based on the action: pass a /rooms/<property_id> URL or property ID for property_detail, reviews, or calendar, or a /users/show/<host_id> URL or host ID for host.
- Optional parameters:
  - check_in: Sets a compatibility YYYY-MM-DD start date for the calendar action. If start_date is also supplied, start_date takes precedence; providing since overrides both. Querying calendar dates does not initiate a booking.
  - check_out: Sets a compatibility YYYY-MM-DD end date for the calendar action. If end_date is also supplied, end_date takes precedence; providing until overrides both. Querying calendar dates does not hold property availability.
  - end_date: Sets the YYYY-MM-DD end date for calendar availability queries. If omitted, the request falls back to check_out or 30 days from the query date (not start_date plus 30 days). Providing until overrides this parameter.
  - since: Sets a YYYY-MM-DD start date with action-dependent scope: for reviews, it sets the starting review date; for calendar, it sets the date window start and overrides start_date and check_in.
  - start_date: Sets the YYYY-MM-DD start date for calendar availability queries. If omitted, the request falls back to check_in or the current date. Providing since overrides this parameter.
  - until: Sets the YYYY-MM-DD end date for the calendar action and overrides end_date and check_out. This parameter controls calendar date windows and does not filter review publication dates.
  - 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, date, available, available_for_checkin, available_for_checkout, bookable, min_nights, max_nights, price, currency.
- Example request body:
{
  "platform": "airbnb",
  "action": "calendar",
  "params": {
    "url": "https://www.airbnb.com/rooms/12937"
  }
}
- Price: $1.39 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.