[
  {"op": "doc", "text": "splice agree once, NO instance name — instance should default to authored name"},
  {"op": "source", "role": "price", "kind": "F64"},
  {"op": "use", "ref": {"name": "agree"}},
  {"op": "feed", "role": "price", "into": ["agree.x"]},
  {"op": "expose", "from": "agree.smoothed", "as": "out"}
]