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    "constructionSegment": {
      "oneOf": [
        {"$ref": "#/$defs/analyticSegment"},
        {"$ref": "#/$defs/constructionBsplineSegment"}
      ]
    },
    "analyticContour": {
      "type": "object",
      "properties": {
        "role": {"enum": ["outer", "inner", "open", "unknown"]},
        "closed": {"type": "boolean"},
        "segments": {"type": "array", "items": {"$ref": "#/$defs/analyticSegment"}}
      },
      "required": ["role", "closed", "segments"],
      "additionalProperties": false
    },
    "analyticProfile": {
      "type": "object",
      "properties": {
        "type": {"const": "analytic_contours"},
        "contours": {"type": "array", "items": {"$ref": "#/$defs/analyticContour"}},
        "construction": {"type": "array", "items": {"$ref": "#/$defs/constructionSegment"}}
      },
      "required": ["type", "contours"],
      "additionalProperties": false
    },
    "feature_atomic_ids": {"enum": ["extrude_add_blind", "extrude_add_two_sided", "extrude_cut_blind", "extrude_cut_two_sided", "extrude_cut_through", "loft_add", "sweep_add", "revolve_add", "revolve_cut", "hole_blind", "hole_countersink", "hole_counterbore", "sphere_add", "box_add", "cylinder_add", "thread_add", "thread_cut", "bend_add", "gear_add", "rack_add", "fillet", "chamfer", "pattern_linear", "pattern_mirror", "pattern_circular", "boolean_bodies", "reference_plane", "reference_axis", "hole_wizard"]},
    "feature": {
      "type": "object",
      "properties": {
        "id": {"type": "string", "pattern": "^[A-Za-z0-9_-]{1,80}$"},
        "name": {"type": "string"},
        "atomic_id": {"$ref": "#/$defs/feature_atomic_ids"},
        "depends_on": {"type": "array", "items": {"type": "string", "pattern": "^[A-Za-z0-9_-]{1,80}$"}},
        "sketch_id": {"type": "string", "pattern": "^[A-Za-z0-9_-]{1,80}$"},
        "params": {"type": "object"},
        "execution_status": {"enum": ["supported", "deferred"]},
        "selectors": {"type": "array", "items": {"$ref": "#/$defs/selectorRef"}},
        "unresolved": {"type": "array", "items": {"type": "string", "minLength": 1}}
      },
      "required": ["id", "atomic_id", "depends_on", "params"],
      "additionalProperties": false,
      "allOf": [
        {"if": {"properties": {"atomic_id": {"const": "extrude_add_blind"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/extrudeParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "extrude_add_blind_with_hole"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/extrudeParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "extrude_add_two_sided"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/extrudeParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "extrude_cut_blind"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/extrudeParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "extrude_cut_through"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/extrudeCutThroughParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "extrude_cut_two_sided"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/extrudeParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "loft_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/loftParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "loft_add_with_cap_face"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/loftCapFaceParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "sweep_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/sweepParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "revolve_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/revolveParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "revolve_cut"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/revolveParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "revolve_surface"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/revolveSurfaceParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "extrude_surface"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/extrudeSurfaceParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "sphere_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/sphereParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "box_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/boxParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "cylinder_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/cylinderParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "bend_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/bendAddParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "gear_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/gearAddParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "rack_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/rackAddParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "thread_add"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/threadAddParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "thread_cut"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/threadCutParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "hole_blind"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/holeBlindParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "hole_countersink"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/holeCountersinkParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "hole_counterbore"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/holeCounterboreParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "fillet"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/filletParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "chamfer"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/chamferParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "shell"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/shellParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "boolean_bodies"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/booleanBodiesParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "pattern_linear"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/linearPatternParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "pattern_mirror"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/mirrorPatternParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "pattern_circular"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/circularPatternParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "reference_plane"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/referencePlaneParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "reference_axis"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/referenceAxisParams"}}}},
        {"if": {"properties": {"atomic_id": {"const": "hole_wizard"}}}, "then": {"properties": {"params": {"$ref": "#/$defs/holeWizardParams"}}}}
      ]
    },
    "profile_type": {"enum": ["circle", "polygon", "analytic_contours"]},
    "profile": {
      "oneOf": [
        {"type": "object", "properties": {"type": {"const": "circle"}, "center": {"$ref": "#/$defs/point2"}, "radius_mm": {"$ref": "#/$defs/positive"}}, "required": ["type", "radius_mm"], "additionalProperties": false},
        {"type": "object", "properties": {"type": {"const": "polygon"}, "vertices": {"type": "array", "minItems": 3, "items": {"$ref": "#/$defs/point2"}}}, "required": ["type", "vertices"], "additionalProperties": false},
        {"$ref": "#/$defs/analyticProfile"}
      ]
    },
    "sketch": {
      "type": "object",
      "properties": {"id": {"type": "string", "pattern": "^[A-Za-z0-9_-]{1,80}$"}, "name": {"type": "string"}, "workplane": {"$ref": "#/$defs/workplane"}, "profile": {"$ref": "#/$defs/profile"}, "role": {"enum": ["profile", "reference"]}, "attachment": {"$ref": "#/$defs/selectorRef"}, "profile_from": {"type": "string", "pattern": "^[A-Za-z0-9_-]{1,80}$"}},
      "required": ["id", "workplane", "profile"],
      "additionalProperties": false
    }
  }
}