{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/cities-database-api/main/json-schema/cities-database-api-city-schema.json",
  "title": "AirLabs City",
  "description": "Single city record returned by the AirLabs Cities Database API.",
  "type": "object",
  "required": ["name", "city_code", "country_code", "lat", "lng"],
  "properties": {
    "name": {
      "type": "string",
      "description": "English name of the city."
    },
    "city_code": {
      "type": "string",
      "pattern": "^[A-Z]{3}$",
      "description": "IATA metropolitan area code."
    },
    "un_code": {
      "type": "string",
      "description": "UN/LOCODE for the city."
    },
    "slug": {
      "type": "string",
      "description": "SEO-friendly slug."
    },
    "country_code": {
      "type": "string",
      "pattern": "^[A-Z]{2}$",
      "description": "ISO 3166-1 alpha-2 country code."
    },
    "lat": {
      "type": "number",
      "minimum": -90,
      "maximum": 90,
      "description": "Latitude in decimal degrees."
    },
    "lng": {
      "type": "number",
      "minimum": -180,
      "maximum": 180,
      "description": "Longitude in decimal degrees."
    },
    "elevation": {
      "type": "integer",
      "description": "Elevation in meters."
    },
    "timezone": {
      "type": "string",
      "description": "IANA timezone identifier."
    },
    "population": {
      "type": "integer",
      "minimum": 0,
      "description": "Population count."
    },
    "wikipedia": {
      "type": "string",
      "format": "uri",
      "description": "Wikipedia article URL."
    },
    "names": {
      "type": "object",
      "additionalProperties": {"type": "string"},
      "description": "Multilingual city names keyed by ISO 639-1 language code."
    }
  }
}