Crexi Search API

Please help me write a data collection script with the EveryInfra Crexi Search endpoint (crexi/search).

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 crexi and action to search, and put the parameters inside params.
- Required parameters:
  - keyword: Serves as the required search parameter for Crexi commercial real estate, but functions as a state filter when supplied as a US state postal code (such as TX, CA, or FL) rather than a free-text property title search.
- Optional parameters:
  - max_price: Filters Crexi listings by maximum asking price in USD. The value is converted to an integer before the search request.
  - min_price: Filters listings by minimum asking price in USD. Accepts numeric values, ideally integers. This parameter does not evaluate capitalization rate or price per square foot, and is ignored by direct property_detail requests.
  - property_types: Filters commercial real estate by asset category using a string or array of strings, such as Office, Retail, or Multifamily.
  - sort: Sorts Crexi search results descending by relevance (directory match strength, default) or newest (listing date order). (allowed: newest / relevance)
  - state: Filters by a single US state postal code, such as TX. Read only when states is omitted, and takes precedence over keyword state filtering. To query multiple states simultaneously, use the states array instead.
  - states: Filters search results by US state postal codes using a string or an array of strings, such as TX or ["TX", "CA"], automatically converted to uppercase. Precedence follows states over state over keyword.
  - transaction_type: Filters listings by transaction mode: sale (default) or lease, case-insensitive. Any other value, such as rent, returns 422 instead of switching to sale. (allowed: lease / sale)
  - 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, name, text, address, city, county, state, postal_code, latitude, longitude, price; 22 fields in total, full list at https://api.everyinfra.com/api/v1/social/catalog?platform=crexi.
- Example request body:
{
  "platform": "crexi",
  "action": "search",
  "params": {
    "keyword": "TX"
  }
}
- 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.