minecraft-bedrock-json-schemas/source/behavior/spawn_rules/components/spawns_underground.json

{
  "$id": "blockception.minecraft.behavior.spawn_rules.minecraft.spawns_underground",
  "additionalProperties": false,
  "type": "object",
  "title": "Spawns Underground",
  "description": "This component allows an entity to spawn underground.",
  "properties": {}
}