MapComplete/assets/layers/matchpoint/matchpoint.json

{
  "id": "matchpoint",
  "description": "The default rendering for a locationInput which snaps onto another object",
  "source": "special",
  "mapRendering": [
    {
      "location": [
        "point",
        "centroid"
      ],
      "icon": "./assets/svg/crosshair-empty.svg"
    }
  ]
}