{
  "criteria": {
    "trade": {
      "trigger": "minecraft:villager_trade",
      "conditions": {
        "villager": {
          "nbt": "{Tags:[\"dnt_librarian_sealing\"],VillagerData:{profession:\"minecraft:librarian\"}}"
        }
      }
    }
  },
  "rewards": {
    "function": "nova_structures:librarians/start_sealing_trader"
  }
}
