Previous value: -nullNew value: +{
+  "additionalProperties": false,
+  "anyOf": [
+    {
+      "required": [
+        "id",
+        "name",
+        "state",
+        "bookingSystem",
+        "provider",
+        "depth",
+        "pageUrl",
+        "bookingUrl",
+        "totalSites",
+        "siteTypes",
+        "amenities",
+        "maxStayNights",
+        "reservationWindowDays",
+        "priceRange",
+        "releaseRule",
+        "alert",
+        "season",
+        "description",
+        "checkedAt"
+      ]
+    },
+    {
+      "required": [
+        "found"
+      ]
+    }
+  ],
+  "description": "The details of one US campground, or found: false.",
+  "properties": {
+    "alert": {
+      "additionalProperties": false,
+      "properties": {
+        "available": {
+          "description": "True only when PermitSnag can send an alert for this place right now.",
+          "type": "boolean"
+        },
+        "pageUrl": {
+          "description": "The PermitSnag page where an alert is set up, or where to read what to do instead.",
+          "type": "string"
+        },
+        "reason": {
+          "description": "Why an alert is or is not on offer.",
+          "enum": [
+            "eligible",
+            "lottery_period",
+            "out_of_season",
+            "closed",
+            "no_quota_now",
+            "lottery_draw_only",
+            "not_sold_online",
+            "not_tracked"
+          ]
+        }
+      },
+      "required": [
+        "available",
+        "reason",
+        "pageUrl"
+      ],
+      "type": "object"
+    },
+    "amenities": {
+      "items": {
+        "type": "string"
+      },
+      "maxItems": 8,
+      "type": "array"
+    },
+    "bookingSystem": {
+      "type": "string"
+    },
+    "bookingUrl": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "checkedAt": {
+      "type": "string"
+    },
+    "depth": {
+      "description": "site_level: our checks count individual sites. campground_level: the booking system reports the campground as a whole.",
+      "enum": [
+        "site_level",
+        "campground_level"
+      ]
+    },
+    "description": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "found": {
+      "const": false,
+      "description": "Present, and false, only when nothing matched."
+    },
+    "id": {
+      "type": "string"
+    },
+    "maxStayNights": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "name": {
+      "type": "string"
+    },
+    "pageUrl": {
+      "type": "string"
+    },
+    "priceRange": {
+      "additionalProperties": false,
+      "properties": {
+        "max": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "min": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "required": [
+        "min",
+        "max"
+      ],
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "provider": {
+      "type": "string"
+    },
+    "releaseRule": {
+      "additionalProperties": false,
+      "description": "When sites go on sale, from the listing itself.",
+      "properties": {
+        "agencyQuote": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "daysAhead": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "kind": {
+          "type": "string"
+        },
+        "monthsAhead": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "readAt": {
+          "type": "string"
+        },
+        "sourceUrl": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "required": [
+        "kind",
+        "monthsAhead",
+        "daysAhead",
+        "sourceUrl",
+        "agencyQuote",
+        "readAt"
+      ],
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "reservationWindowDays": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "season": {
+      "additionalProperties": true,
+      "description": "The agency's season or closure state, with agency words in quoted fields.",
+      "properties": {
+        "agency": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "agencyQuote": {
+          "description": "The agency's own words, capped.",
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "closedParts": {
+          "description": "Named parts that are closed while the rest stays open.",
+          "items": {
+            "additionalProperties": true,
+            "properties": {
+              "agencyQuote": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "name": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "reopensOn": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "since": {
+                "type": "string"
+              },
+              "url": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              }
+            },
+            "type": "object"
+          },
+          "maxItems": 5,
+          "type": "array"
+        },
+        "closesOn": {
+          "description": "YYYY-MM-DD the agency says the season closes.",
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "closure": {
+          "additionalProperties": true,
+          "description": "A closure of the whole place, when the agency posted one.",
+          "properties": {
+            "agency": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "incident": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "readAt": {
+              "type": "string"
+            },
+            "reopensOn": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "since": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "url": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
+          },
+          "type": "object"
+        },
+        "offer": {
+          "description": "What the page offers in this season.",
+          "type": "string"
+        },
+        "opensOn": {
+          "description": "YYYY-MM-DD the agency says the season opens.",
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "sourceUrl": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "state": {
+          "description": "The season state code, or null when nothing is published.",
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "required": [
+        "offer",
+        "state"
+      ],
+      "type": "object"
+    },
+    "siteTypes": {
+      "items": {
+        "type": "string"
+      },
+      "maxItems": 6,
+      "type": "array"
+    },
+    "state": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "totalSites": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    }
+  },
+  "type": "object"
+}