The "summary" flag is meant to be used with one of the following: city, county, zip, polygon, multi_polygon, lat/lng+radius, address+radius

When using "summary" with "count", there will be a 0 credit charge for the API call

{
   "count": true,
   "summary": true,
   "zip": "22205"
}

sample summary response sample:

{
    "auction": 0,
    "highEquity": 5557,
    "freeClear": 1570,
    "preForeclosure": 3,
    "vacant": 45,
    "ownerOccupied": 4894,
    "absenteeOwner": 1015,
    "inStateAbsenteeOwner": 757,
    "outOfStateAbsenteeOwner": 241,
    "corporateOwned": 340,
    "cashBuyer": 845,
    "investorBuyer": 1015,
    "reo": 32,
    "mlsActive": 18,
    "mlsPending": 4,
    "privateLender": 0,
    "MFH2to4": 8,
    "MFH5plus": 51,
    "medianListingPrice": 1287000,
    "medianDaysOnMarket": 32.5
}