MineCase/data/minecraft/advancements/adventure/trade.json

{
  "parent": "minecraft:adventure/root",
  "display": {
    "icon": {
      "item": "minecraft:emerald"
    },
    "title": {
      "translate": "advancements.adventure.trade.title"
    },
    "description": {
      "translate": "advancements.adventure.trade.description"
    },
    "frame": "task",
    "show_toast": true,
    "announce_to_chat": true,
    "hidden": false
  },
  "criteria": {
    "traded": {
      "trigger": "minecraft:villager_trade",
      "conditions": {}
    }
  },
  "requirements": [
    [
      "traded"
    ]
  ]
}