{
  "lastChecked": "2026-05-30",
  "sources": {
    "official-jr-pass-prices": {
      "name": "JAPAN RAIL PASS official prices",
      "url": "https://japanrailpass.net/en/purchase/price/",
      "usedFor": ["JR Pass benchmark", "rail pass decision checks"]
    },
    "jnto-statistics": {
      "name": "Japan National Tourism Organization visitor statistics",
      "url": "https://www.jnto.go.jp/statistics/eng/visitors/",
      "usedFor": ["visitor trend context", "crowd planning"]
    },
    "narita-airport-access": {
      "name": "Narita International Airport access information",
      "url": "https://www.narita-airport.jp/en/access/",
      "usedFor": ["airport train and bus planning", "arrival-day transfer checks"]
    },
    "keisei-skyliner-fares": {
      "name": "Keisei Skyliner fares",
      "url": "https://www.keisei.co.jp/keisei/tetudou/skyliner/us/traffic/skyliner_fares.php",
      "usedFor": ["Narita to Tokyo rail benchmark"]
    },
    "tokyo-transport-official": {
      "name": "Official Tokyo transport information",
      "url": "https://www.gotokyo.org/en/plan/getting-around/index.html",
      "usedFor": ["local transit planning", "city route checks"]
    }
  }
}