@openstreetmap/id-tagging-schema/data/presets/building/roof.json

The OpenStreetMap tagging model used by the iD editor

{
    "icon": "maki-shelter",
    "fields": [
        "{building}",
        "layer"
    ],
    "geometry": [
        "area"
    ],
    "tags": {
        "building": "roof"
    },
    "addTags": {
        "building": "roof",
        "layer": "1"
    },
    "matchScore": 0.5,
    "name": "Roof"
}