← mecheval / run / a4-stepped-pyramid-with-holes-01 / claude-mcp-claude-opus-4-7 / 20260611T223141Z-518c

run 20260611T223141Z-518c

a4-stepped-pyramid-with-holes-01 · claude-mcp-claude-opus-4-7

Summary

status	fail
score	0.50 (3/6)
submission	self-run
model	claude-mcp-claude-opus-4-7 (anthropic)
started	2026-06-11T22:31:41.856Z
ended	2026-06-11T22:36:01.956Z
tokens	583,436 in · 5,460 out · 588,896 total
wallclock	260.1s
tool calls	42
task hash	`88075d4c0f433c11…`
vcad hash	`dacb6b7e2c210b03…`

Prompt

Make a stepped pyramid composed of three concentric square layers stacked along Z, fused into a single solid. Base layer: 80mm × 80mm × 10mm, centered in X and Y, bottom face on the XY plane (z = 0 to z = 10). Middle layer: 60mm × 60mm × 10mm, centered, sitting on top of the base layer (z = 10 to z = 20). Top layer: 40mm × 40mm × 10mm, centered, sitting on top of the middle layer (z = 20 to z = 30). The base layer has four bolt holes of diameter 6mm, axes parallel to Z, drilled through the full 10mm thickness of the base only (z = 0 to z = 10), located at (30, 30), (-30, 30), (-30, -30), (30, -30). Output a single solid.

Checks

valid_solid

pass

params + details

params: {
  "type": "valid_solid"
}

details: {
  "root_count": 3,
  "solids_produced": 3
}

bbox

pass

params + details

params: {
  "type": "bbox",
  "min": [
    -40,
    -40,
    0
  ],
  "max": [
    40,
    40,
    30
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    40,
    40,
    30
  ],
  "actual_min": [
    -40,
    -40,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.1
}

mass_props

fail

volume off by 1.5%

params + details

params: {
  "type": "mass_props",
  "volume_mm3": 114869.03,
  "tolerance_pct": 0.5
}

details: {
  "volume": {
    "actual_mm3": 116561.86007065944,
    "deviation_pct": 1.4737045056090798,
    "pass": false,
    "spec_mm3": 114869.03,
    "tolerance_pct": 0.5
  }
}

hole_count

fail

found 0/4 holes of ⌀6mm

params + details

params: {
  "type": "hole_count",
  "diameter_mm": 6,
  "expected": 4,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 0,
  "diameter_mm": 6,
  "diameter_tolerance_mm": 0.05,
  "expected": 4,
  "found": []
}

hole_positions

fail

4/4 mispositioned

params + details

params: {
  "type": "hole_positions",
  "diameter_mm": 6,
  "positions": [
    [
      30,
      30,
      0
    ],
    [
      -30,
      30,
      0
    ],
    [
      -30,
      -30,
      0
    ],
    [
      30,
      -30,
      0
    ]
  ],
  "tolerance_mm": 0.15
}

details: {
  "diameter_mm": 6,
  "per_expected": [
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        30,
        30
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -30,
        30
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -30,
        -30
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        30,
        -30
      ]
    }
  ],
  "tolerance_mm": 0.15,
  "unmatched_extras": []
}

step_roundtrip

pass

params + details

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 0.5
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          40,
          30
        ],
        "original_min": [
          -40,
          -40,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          40,
          30
        ],
        "roundtripped_min": [
          -40,
          -40,
          0
        ],
        "tolerance_mm": 0.5852349955359814
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 116000,
        "pass": true,
        "roundtripped_mm3": 116000
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          33,
          33,
          10
        ],
        "original_min": [
          27,
          27,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          33,
          33,
          10
        ],
        "roundtripped_min": [
          27,
          27,
          0
        ],
        "tolerance_mm": 0.06557438524302
      },
      "index": 1,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 280.93000602955726,
        "pass": true,
        "roundtripped_mm3": 280.93000602955726
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          3,
          3,
          10
        ],
        "original_min": [
          -3,
          -3,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          3,
          3,
          10
        ],
        "roundtripped_min": [
          -3,
          -3,
          0
        ],
        "tolerance_mm": 0.06557438524302
      },
      "index": 2,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 280.9300646298918,
        "pass": true,
        "roundtripped_mm3": 280.9300646298918
      }
    }
  ],
  "tolerance_pct": 0.5
}

Tool calls

open_document

2ms

args

{}

create_cad_loon

10ms

args

{
  "source": "[let\n  base [translate -40 -40 0 [cube 80 80 10]]\n  mid  [translate -30 -30 10 [cube 60 60 10]]\n  top  [translate -20 -20 20 [cube 40 40 10]]\n  h1 [translate 30 30 0 [cylinder 3 10]]\n  h2 [translate -30 30 0 [cylinder 3 10]]\n  h3 [translate -30 -30 0 [cylinder 3 10]]\n  h4 [translate 30 -30 0 [cylinder 3 10]]\n  body [union mid [union top base]]\n  drilled [difference h1 [difference h2 [difference h3 [difference h4 body]]]]\n  [root drilled \"steel\"]]",
  "format": "json"
}

create

5ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 80,
      "y": 80,
      "z": 10
    }
  },
  "name": "base_cube"
}

create

6ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "translate",
  "params": {
    "child": 1,
    "offset": {
      "x": -40,
      "y": -40,
      "z": 0
    }
  },
  "parent_part_id": "1",
  "name": "base"
}

create

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 60,
      "z": 10
    }
  },
  "parent_part_id": "1",
  "name": "mid_cube"
}

read

1ms

args

{
  "document_id": "doc_1781217102026_1"
}

read

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "3"
}

delete

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "1"
}

delete

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "2"
}

delete

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "3"
}

read

3ms

args

{
  "document_id": "doc_1781217102026_1"
}

create

5ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 80,
      "y": 80,
      "z": 10
    }
  },
  "name": "base_cube"
}

create

err

5ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -40,
      "y": -40,
      "z": 0
    }
  },
  "parent_part_id": "1",
  "name": "base"
}

create

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "translate",
  "params": {
    "child": 1,
    "offset": {
      "x": -40,
      "y": -40,
      "z": 0
    }
  },
  "parent_part_id": "1",
  "name": "base_t"
}

read

2ms

args

{
  "document_id": "doc_1781217102026_1"
}

read

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "2"
}

read

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "1"
}

delete

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "1"
}

read

1ms

args

{
  "document_id": "doc_1781217102026_1"
}

read

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "2"
}

create

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 60,
      "z": 10
    }
  },
  "name": "mid_cube"
}

create

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "translate",
  "params": {
    "child": 3,
    "offset": {
      "x": -30,
      "y": -30,
      "z": 10
    }
  },
  "parent_part_id": "3",
  "name": "mid_t"
}

delete

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "3"
}

create

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 40,
      "y": 40,
      "z": 10
    }
  },
  "name": "top_cube"
}

create

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "translate",
  "params": {
    "child": 5,
    "offset": {
      "x": -20,
      "y": -20,
      "z": 20
    }
  },
  "parent_part_id": "5",
  "name": "top_t"
}

delete

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "5"
}

read

1ms

args

{
  "document_id": "doc_1781217102026_1"
}

create

err

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "union",
  "params": {
    "children": [
      2,
      4,
      6
    ]
  },
  "name": "stack"
}

create

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "union",
  "params": {
    "left": 2,
    "right": 4
  },
  "name": "u1"
}

create

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "union",
  "params": {
    "left": 7,
    "right": 6
  },
  "name": "stack"
}

read

3ms

args

{
  "document_id": "doc_1781217102026_1"
}

delete

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "2"
}

delete

1ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "4"
}

delete

1ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "6"
}

delete

1ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "7"
}

read

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "8"
}

create

err

4ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 10
  },
  "name": "hole_proto"
}

create

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 10,
    "segments": 32
  },
  "name": "hole_proto"
}

create

4ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "translate",
  "params": {
    "child": 9,
    "offset": {
      "x": 30,
      "y": 30,
      "z": 0
    }
  },
  "parent_part_id": "9",
  "name": "h1"
}

delete

3ms

args

{
  "document_id": "doc_1781217102026_1",
  "part_id": "9"
}

create

2ms

args

{
  "document_id": "doc_1781217102026_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 10,
    "segments": 32
  },
  "name": "c2"
}

get_document

1ms

args

{
  "document_id": "doc_1781217102026_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T223141Z-518c.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "base_cube",
      "op": {
        "type": "Cube",
        "size": {
          "x": 80,
          "y": 80,
          "z": 10
        }
      }
    },
    "2": {
      "id": 2,
      "name": "base_t",
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -40,
          "y": -40,
          "z": 0
        }
      }
    },
    "3": {
      "id": 3,
      "name": "mid_cube",
      "op": {
        "type": "Cube",
        "size": {
          "x": 60,
          "y": 60,
          "z": 10
        }
      }
    },
    "4": {
      "id": 4,
      "name": "mid_t",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": -30,
          "y": -30,
          "z": 10
        }
      }
    },
    "5": {
      "id": 5,
      "name": "top_cube",
      "op": {
        "type": "Cube",
        "size": {
          "x": 40,
          "y": 40,
          "z": 10
        }
      }
    },
    "6": {
      "id": 6,
      "name": "top_t",
      "op": {
        "type": "Translate",
        "child": 5,
        "offset": {
          "x": -20,
          "y": -20,
          "z": 20
        }
      }
    },
    "7": {
      "id": 7,
      "name": "u1",
      "op": {
        "type": "Union",
        "left": 2,
        "right": 4
      }
    },
    "8": {
      "id": 8,
      "name": "stack",
      "op": {
        "type": "Union",
        "left": 7,
        "right": 6
      }
    },
    "9": {
      "id": 9,
      "name": "hole_proto",
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 10,
        "segments": 32
      }
    },
    "10": {
      "id": 10,
      "name": "h1",
      "op": {
        "type": "Translate",
        "child": 9,
        "offset": {
          "x": 30,
          "y": 30,
          "z": 0
        }
      }
    },
    "11": {
      "id": 11,
      "name": "c2",
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 10,
        "segments": 32
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 8,
      "material": "default"
    },
    {
      "root": 10,
      "material": "default"
    },
    {
      "root": 11,
      "material": "default"
    }
  ]
}

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