docs/examples/extrusion/style.json

{
  "version": 8,
  "center": [
    0.1278,
    51.5074
  ],
  "zoom": 14,
  "sources": {
    "baremaps": {
      "type": "vector",
      "url": "http://localhost:9000/tiles.json"
    }
  },
  "layers": [
    {
      "id": "building",
      "type": "fill-extrusion",
      "source": "baremaps",
      "source-layer": "building",
      "paint": {
        "fill-extrusion-color": "rgb(152, 174, 221)",
        "fill-extrusion-height": [
          "get",
          "building:height"
        ],
        "fill-extrusion-base": 0,
        "fill-extrusion-opacity": 0.9
      }
    }
  ]
}