mutation createCoin { createCoin(input: { name: "Bitcoin" symbol: "BTC" price: 9000 }) { id name symbol price } }
query listCoins { listCoins { items { id name symbol price } } }
query listCoins { listCoins(filter: { price: { gt: 2000 } }) { items { id name symbol price } } }
mutation createNote { createNote(input: { title: "Note" description: "Note desc" }) { id title description } }
query listNotes { listNotes { items { id title description } } }