Xing Jobs API

Please help me write a data collection script with the EveryInfra Xing Jobs endpoint (xing/jobs).

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 xing and action to jobs, and put the parameters inside params.
- Required parameters:
  - keyword: Specifies job title or skill keywords for the XING jobs action. This parameter applies to job listings and is distinct from personal profile searches.
- Optional parameters:
  - discipline: Filters job listings by functional discipline for the XING jobs action. Must be a free-text string matching the category label in the target XING interface language, such as Technology, rather than an arbitrary skill key…
  - employment_type: Filters XING job listings by employment arrangement. Accepts a single value or array: FULL_TIME, PART_TIME, INTERN, CONTRACTOR, FREELANCE, TEMPORARY, or OTHER. Unrecognized values are ignored.
  - location: Sets the target city for the XING jobs action. Explicitly specifying a city is recommended; when omitted, the platform defaults to Berlin rather than the broader DACH region.
  - radius: Defines the search radius around location in integer kilometers for the XING jobs action. Defaults to 10; passing 0 is the same as omitting it.
  - salary_max: Sets the upper annual salary threshold for the XING jobs action in EUR as a non-negative integer, where 0 indicates no maximum limit. Whether amounts are gross or net is not stated.
  - salary_min: Sets the lower annual salary threshold for the XING jobs action in EUR as a non-negative integer, where 0 indicates no minimum limit. Hourly rates should not be entered directly into this parameter.
  - 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, title, company, company_url, location, country, salary_min, salary_max, salary_median, salary_currency, employment_type; 24 fields in total, full list at https://api.everyinfra.com/api/v1/social/catalog?platform=xing.
- Example request body:
{
  "platform": "xing",
  "action": "jobs",
  "params": {
    "keyword": "Data Engineer"
  }
}
- 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.