Using filters

GET /api/v1/Contact?$select=name,category,number&$filter=category oneOf (3)

{
  value = [
    {
      "PrimaryKey": "25",
      "EntityName": "contact",
      "name": "Lena Trevare AS",
      "category": "Leverandør",
      "number": "10033"
    }, {
      "PrimaryKey": "26",
      "EntityName": "contact",
      "name": "Liumseter Hyttegrend",
      "category": "Leverandør",
      "number": "10034"
    }, {
      "PrimaryKey": "27",
      "EntityName": "contact",
      "name": "Mosjøen Boligbyggerlag AS",
      "category": "Leverandør",
      "number": "10035"
    }
  ]
}

GET /api/v1/Contact?$select=name,category,number&$filter=category%20oneOf%20(3)&$mode=FULL

{
  value = [
    {
      "PrimaryKey": 25,
      "EntityName": "contact",
      "StyleHint": "",
      "LinkHint": "nav=contact&contact_id=25",
      "TableRight": {
        "Mask": 1,
        "Reason": "[SR_ACTIVITY_BLOCKED_FIND]"
      },
      "Column": {
        "name": {
          "RawValue": "Lena Trevare AS",
          "DisplayValue": "Lena Trevare AS",
          "LinkHint": "",
          "TooltipHint": "{contact_id=25}"
        },
        "category": {
          "RawValue": 3,
          "DisplayValue": "US:\"Vendor\";NO:\"Leverandør\";",
          "LinkHint": "",
          "TooltipHint": "{category_id=3}"
        },
        "number": {
          "RawValue": "10033",
          "DisplayValue": "10033",
          "LinkHint": "",
          "TooltipHint": "{contact_id=25}"
        }
      }
    },
    {
      "PrimaryKey": 26,
      "EntityName": "contact",
      "StyleHint": "",
      "LinkHint": "nav=contact&contact_id=26",
      "TableRight": {
        "Mask": 1,
        "Reason": "[SR_ACTIVITY_BLOCKED_FIND]"
      },
      "Column": {
        "name": {
          "RawValue": "Liumseter Hyttegrend",
          "DisplayValue": "Liumseter Hyttegrend",
          "LinkHint": "",
          "TooltipHint": "{contact_id=26}"
        },
        "category": {
          "RawValue": 3,
          "DisplayValue": "US:\"Vendor\";NO:\"Leverandør\";",
          "LinkHint": "",
          "TooltipHint": "{category_id=3}"
        },
        "number": {
          "RawValue": "10034",
          "DisplayValue": "10034",
          "LinkHint": "",
          "TooltipHint": "{contact_id=26}"
        }
      }
    },
    {
      "PrimaryKey": 27,
      "EntityName": "contact",
      "StyleHint": "",
      "LinkHint": "nav=contact&contact_id=27",
      "TableRight": {
        "Mask": 1,
        "Reason": "[SR_ACTIVITY_BLOCKED_FIND]"
      },
      "Column": {
        "name": {
          "RawValue": "Mosjøen Boligbyggerlag AS",
          "DisplayValue": "Mosjøen Boligbyggerlag AS",
          "LinkHint": "",
          "TooltipHint": "{contact_id=27}"
        },
        "category": {
          "RawValue": 3,
          "DisplayValue": "US:\"Vendor\";NO:\"Leverandør\";",
          "LinkHint": "",
          "TooltipHint": "{category_id=3}"
        },
        "number": {
          "RawValue": "10035",
          "DisplayValue": "10035",
          "LinkHint": "",
          "TooltipHint": "{contact_id=27}"
        }
      }
    }
  ]
}