minecraft-assets/assets/minecraft/advancements/story/iron_tools.json

{
    "display": {
        "icon": {
            "item": "minecraft:iron_pickaxe"
        },
        "title": "Isn't It Iron Pick",
        "description": "Upgrade your pickaxe"
    },
    "parent": "minecraft:story/smelt_iron",
    "criteria": {
        "iron_pickaxe": {
            "trigger": "minecraft:inventory_changed",
            "conditions": {
                "items": [
                    {
                        "item": "minecraft:iron_pickaxe"
                    }
                ]
            }
        }
    }
}