Paid Search Keyword for a Domain in a Past Month (US, One Row)

{
  "type": "object",
  "required": [
    "domain",
    "display_date"
  ],
  "properties": {
    "domain": {
      "type": "string",
      "minLength": 1,
      "description": "Root domain to look up, without a scheme or path."
    },
    "database": {
      "enum": [
        "us"
      ],
      "type": "string",
      "default": "us",
      "description": "Regional search database: US. The only value offered."
    },
    "display_date": {
      "type": "string",
      "pattern": "^\\d{6}15$",
      "description": "Past month to report on, written as YYYYMM15 (the 15th of that month)."
    },
    "display_limit": {
      "enum": [
        1
      ],
      "type": "integer",
      "default": 1,
      "description": "Number of rows to return. Fixed at 1."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "rows": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "cpc": {
            "type": "string",
            "description": "Average cost per click for the keyword, as a decimal string with no currency sign."
          },
          "trends": {
            "type": "string",
            "description": "Twelve comma-separated monthly search-interest values for the keyword, as one string."
          },
          "keyword": {
            "type": "string",
            "description": "The search term."
          },
          "position": {
            "type": "string",
            "description": "The ad's position for the keyword in paid search results, as a string."
          },
          "visibleUrl": {
            "type": "string",
            "description": "The site address shown in the ad."
          },
          "competition": {
            "type": "string",
            "description": "Advertiser competition level for the keyword, as a decimal string."
          },
          "searchVolume": {
            "type": "string",
            "description": "Average monthly searches for the keyword, as a string."
          },
          "trafficPercent": {
            "type": "string",
            "description": "Share of the domain's estimated paid search traffic that comes from this keyword, as a percentage string."
          },
          "numberOfResults": {
            "type": "string",
            "description": "Number of search results reported for the keyword, as a string."
          },
          "previousPosition": {
            "type": "string",
            "description": "The ad's earlier position for the keyword, as reported, as a string."
          },
          "positionDifference": {
            "type": "string",
            "description": "Change in the ad's position, as reported, as a string."
          },
          "trafficCostPercent": {
            "type": "string",
            "description": "Share of the domain's estimated paid traffic cost that comes from this keyword, as a percentage string."
          }
        }
      },
      "description": "At most one row: the first row of the domain's paid-search keyword report for that month."
    },
    "database": {
      "type": "string",
      "description": "The regional search database the row comes from (us)."
    }
  },
  "description": "The domain's first paid-search keyword row for the chosen month in the US database, as returned after shaping."
}