curl --request GET \
  --url https://api.leanmcp.com/api/chats/stats \
  --header 'Authorization: Bearer <token>'

{
  "totalChats": 25,
  "totalMessages": 250,
  "averageMessagesPerChat": 10.5,
  "modelsUsed": {
    "claude-3-sonnet": 15,
    "claude-3-haiku": 10
  },
  "mostActiveDay": "2025-06-15",
  "chatsThisWeek": 5,
  "messagesThisWeek": 45
}