{
  "criteria": {
    "empty": {
      "trigger": "minecraft:inventory_changed",
      "conditions": {
        "player": [
          {
            "condition": "minecraft:entity_properties",
            "entity": "this",
            "predicate": {
              "equipment": {
                "chest": {
                  "items": [
                    "minecraft:air"
                  ]
                }
              }
            }
          }
        ]
      }
    },
    "chest": {
      "trigger": "minecraft:inventory_changed",
      "conditions": {
        "player": [
          {
            "condition": "minecraft:entity_properties",
            "entity": "this",
            "predicate": {
              "type_specific": {
                "type": "player",
                "advancements": {
                  "mt:technical/armor/chest_durability": false
                }
              },
              "equipment": {
                "chest": {
                  "items": ["minecraft:leather_chestplate","minecraft:chainmail_chestplate","minecraft:iron_chestplate","minecraft:golden_chestplate","minecraft:diamond_chestplate","minecraft:netherite_chestplate","minecraft:elytra"]
                }
              }
            }
          }
        ],
        "items": [
          {
            "items": ["minecraft:leather_chestplate","minecraft:chainmail_chestplate","minecraft:iron_chestplate","minecraft:golden_chestplate","minecraft:diamond_chestplate","minecraft:netherite_chestplate","minecraft:elytra"]
          }
        ]
      }
    }
  },
  "requirements": [
    [
      "empty",
      "chest"
    ]
  ],
  "rewards": {
    "function": "mt:technical/armor/chest_check"
  }
}
