code: def get_xgboost_json(model):
      
      fnames = model.feature_names
      model.feature_names = None
      json_trees = model.get_dump(with_stats=True, dump_format="json")
      model.feature_names = fnames
  
      # this fixes a bug where XGBoost can return invalid JSON
      json_trees = [t.replace(": inf,", ": 1000000000000.0,") for t in json_trees]
      json_trees = [t.replace(": -inf,", ": -1000000000000.0,") for t in json_trees]
  
      return json_trees
docs: This gets a JSON dump of an XGBoost model while ensuring the features names are their indexes.