← mecheval / run / a4-stepped-pyramid-with-holes-01 / claude-mcp-claude-opus-4-7 / 20260611T223156Z-ddf8

run 20260611T223156Z-ddf8

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

Summary

statusfail
score0.83 (5/6)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-11T22:31:56.966Z
ended2026-06-11T22:35:07.407Z
tokens612,395 in · 7,769 out · 620,164 total
wallclock190.4s
tool calls59
task hash88075d4c0f433c11…
vcad hash3aa82d71747adcb4…

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

0
valid_solid
pass
params + details 
params: {
  "type": "valid_solid"
}

details: {
  "root_count": 1,
  "solids_produced": 1
}
1
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
}
2
mass_props
pass
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 114869.03,
  "tolerance_pct": 0.5
}

details: {
  "volume": {
    "actual_mm3": 115063.56671987216,
    "deviation_pct": 0.16935523863322005,
    "pass": true,
    "spec_mm3": 114869.03,
    "tolerance_pct": 0.5
  }
}
3
hole_count
pass
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 6,
  "expected": 4,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 4,
  "diameter_mm": 6,
  "diameter_tolerance_mm": 0.05,
  "expected": 4,
  "found": [
    [
      30,
      30,
      6
    ],
    [
      -30,
      30,
      6
    ],
    [
      -30,
      -30,
      6
    ],
    [
      30,
      -30,
      6
    ]
  ]
}
4
hole_positions
pass
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": [
    {
      "distance_mm": 0,
      "matched_hole": [
        30,
        30
      ],
      "pass": true,
      "spec_xy": [
        30,
        30
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        -30,
        30
      ],
      "pass": true,
      "spec_xy": [
        -30,
        30
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        -30,
        -30
      ],
      "pass": true,
      "spec_xy": [
        -30,
        -30
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        30,
        -30
      ],
      "pass": true,
      "spec_xy": [
        30,
        -30
      ]
    }
  ],
  "tolerance_mm": 0.15,
  "unmatched_extras": []
}
5
step_roundtrip
fail
STEP drift on 1/1 solid
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": false,
      "volume": {
        "deviation_pct": 0.7173657531279704,
        "original_mm3": 115063.56671987216,
        "pass": false,
        "roundtripped_mm3": 115888.99334184808
      }
    }
  ],
  "tolerance_pct": 0.5
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create_cad_loon
err
9ms
args
{
  "source": "[let\n  base [difference\n    [union\n      [translate -20 -30 10 [cube 40 60 10]]\n      [translate -30 -20 10 [cube 60 40 10]]\n      [union\n        [translate -30 -30 0 [cube 60 60 10]]\n        [union\n          [translate -20 -20 20 [cube 40 40 10]]\n          [translate -40 -40 0 [cube 80 80 10]]]]]\n    [union\n      [translate 30 30 0 [cylinder 3 10]]\n      [union\n        [translate -30 30 0 [cylinder 3 10]]\n        [union\n          [translate -30 -30 0 [cylinder 3 10]]\n          [translate 30 -30 0 [cylinder 3 10]]]]]]\n  [root base \"steel\"]]",
  "format": "json"
}
2
create_cad_loon
ok
8ms
args
{
  "source": "[let base\n  [translate -40 -40 0 [cube 80 80 10]]\n  [let mid\n    [translate -30 -30 10 [cube 60 60 10]]\n    [let top\n      [translate -20 -20 20 [cube 40 40 10]]\n      [let h1 [translate 30 30 0 [cylinder 3 10]]\n        [let h2 [translate -30 30 0 [cylinder 3 10]]\n          [let h3 [translate -30 -30 0 [cylinder 3 10]]\n            [let h4 [translate 30 -30 0 [cylinder 3 10]]\n              [let holes [union h1 [union h2 [union h3 h4]]]\n                [let solid [union top [union mid base]]\n                  [root [difference holes solid] \"steel\"]]]]]]]]]]",
  "format": "json"
}
3
create
ok
8ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 80,
      "y": 80,
      "z": 10
    }
  },
  "name": "base cube"
}
4
create
ok
5ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "translate",
  "params": {
    "child": 1,
    "offset": {
      "x": -40,
      "y": -40,
      "z": 0
    }
  },
  "name": "base translate",
  "parent_part_id": "1"
}
5
create
ok
2ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 60,
      "z": 10
    }
  },
  "name": "mid cube"
}
6
create
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 40,
      "y": 40,
      "z": 10
    }
  },
  "name": "top cube"
}
7
read
ok
4ms
args
{
  "document_id": "doc_1781217117139_1"
}
8
delete
ok
4ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "1"
}
9
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "2"
}
10
delete
ok
2ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "3"
}
11
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "4"
}
12
create
ok
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 80,
      "y": 80,
      "z": 10
    }
  },
  "name": "base"
}
13
create
err
5ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -40,
      "y": -40,
      "z": 0
    }
  },
  "parent_part_id": "1",
  "name": "base translate"
}
14
create
ok
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -40,
      "y": -40,
      "z": 0
    },
    "child": 1
  },
  "parent_part_id": "1",
  "name": "base translate"
}
15
create
ok
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 60,
      "z": 10
    }
  },
  "name": "mid"
}
16
create
ok
5ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -30,
      "y": -30,
      "z": 10
    },
    "child": 3
  },
  "parent_part_id": "3",
  "name": "mid translate"
}
17
create
ok
4ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 40,
      "y": 40,
      "z": 10
    }
  },
  "name": "top"
}
18
create
ok
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -20,
      "y": -20,
      "z": 20
    },
    "child": 5
  },
  "parent_part_id": "5",
  "name": "top translate"
}
19
create
err
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "union",
  "params": {
    "children": [
      2,
      4,
      6
    ]
  },
  "name": "pyramid solid"
}
20
create
ok
2ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "union",
  "params": {
    "left": 2,
    "right": 4
  },
  "name": "union base+mid"
}
21
read
ok
2ms
args
{
  "document_id": "doc_1781217117139_1"
}
22
get_document
ok
2ms
args
{
  "document_id": "doc_1781217117139_1"
}
23
create
ok
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "union",
  "params": {
    "left": 7,
    "right": 6
  },
  "name": "pyramid"
}
24
create
err
2ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 10
  },
  "name": "hole1 cyl"
}
25
create
ok
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 10,
    "segments": 32
  },
  "name": "hole1 cyl"
}
26
create
ok
4ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": 30,
      "y": 30,
      "z": 0
    },
    "child": 9
  },
  "parent_part_id": "9",
  "name": "hole1"
}
27
create
ok
2ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 10,
    "segments": 32
  },
  "name": "hole2 cyl"
}
28
create
ok
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -30,
      "y": 30,
      "z": 0
    },
    "child": 11
  },
  "parent_part_id": "11",
  "name": "hole2"
}
29
create
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 10,
    "segments": 32
  },
  "name": "hole3 cyl"
}
30
create
ok
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -30,
      "y": -30,
      "z": 0
    },
    "child": 13
  },
  "parent_part_id": "13",
  "name": "hole3"
}
31
create
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 10,
    "segments": 32
  },
  "name": "hole4 cyl"
}
32
create
ok
3ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": 30,
      "y": -30,
      "z": 0
    },
    "child": 15
  },
  "parent_part_id": "15",
  "name": "hole4"
}
33
create
ok
4ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "union",
  "params": {
    "left": 10,
    "right": 12
  },
  "name": "holes12"
}
34
create
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "union",
  "params": {
    "left": 14,
    "right": 16
  },
  "name": "holes34"
}
35
create
ok
4ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "union",
  "params": {
    "left": 17,
    "right": 18
  },
  "name": "all holes"
}
36
create
ok
2ms
args
{
  "document_id": "doc_1781217117139_1",
  "type": "difference",
  "params": {
    "left": 8,
    "right": 19
  },
  "name": "final"
}
37
get_document
ok
3ms
args
{
  "document_id": "doc_1781217117139_1"
}
38
delete
ok
4ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "1"
}
39
get_document
ok
2ms
args
{
  "document_id": "doc_1781217117139_1"
}
40
delete
ok
2ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "2"
}
41
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "3"
}
42
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "4"
}
43
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "5"
}
44
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "6"
}
45
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "7"
}
46
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "8"
}
47
delete
ok
0ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "9"
}
48
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "10"
}
49
delete
ok
0ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "11"
}
50
delete
ok
0ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "12"
}
51
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "13"
}
52
delete
ok
0ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "14"
}
53
delete
ok
0ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "15"
}
54
delete
ok
0ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "16"
}
55
delete
ok
1ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "17"
}
56
delete
ok
0ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "18"
}
57
delete
ok
0ms
args
{
  "document_id": "doc_1781217117139_1",
  "part_id": "19"
}
58
get_document
ok
0ms
args
{
  "document_id": "doc_1781217117139_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T223156Z-ddf8.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "base",
      "op": {
        "type": "Cube",
        "size": {
          "x": 80,
          "y": 80,
          "z": 10
        }
      }
    },
    "2": {
      "id": 2,
      "name": "base translate",
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -40,
          "y": -40,
          "z": 0
        }
      }
    },
    "3": {
      "id": 3,
      "name": "mid",
      "op": {
        "type": "Cube",
        "size": {
          "x": 60,
          "y": 60,
          "z": 10
        }
      }
    },
    "4": {
      "id": 4,
      "name": "mid translate",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": -30,
          "y": -30,
          "z": 10
        }
      }
    },
    "5": {
      "id": 5,
      "name": "top",
      "op": {
        "type": "Cube",
        "size": {
          "x": 40,
          "y": 40,
          "z": 10
        }
      }
    },
    "6": {
      "id": 6,
      "name": "top translate",
      "op": {
        "type": "Translate",
        "child": 5,
        "offset": {
          "x": -20,
          "y": -20,
          "z": 20
        }
      }
    },
    "7": {
      "id": 7,
      "name": "union base+mid",
      "op": {
        "type": "Union",
        "left": 2,
        "right": 4
      }
    },
    "8": {
      "id": 8,
      "name": "pyramid",
      "op": {
        "type": "Union",
        "left": 7,
        "right": 6
      }
    },
    "9": {
      "id": 9,
      "name": "hole1 cyl",
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 10,
        "segments": 32
      }
    },
    "10": {
      "id": 10,
      "name": "hole1",
      "op": {
        "type": "Translate",
        "child": 9,
        "offset": {
          "x": 30,
          "y": 30,
          "z": 0
        }
      }
    },
    "11": {
      "id": 11,
      "name": "hole2 cyl",
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 10,
        "segments": 32
      }
    },
    "12": {
      "id": 12,
      "name": "hole2",
      "op": {
        "type": "Translate",
        "child": 11,
        "offset": {
          "x": -30,
          "y": 30,
          "z": 0
        }
      }
    },
    "13": {
      "id": 13,
      "name": "hole3 cyl",
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 10,
        "segments": 32
      }
    },
    "14": {
      "id": 14,
      "name": "hole3",
      "op": {
        "type": "Translate",
        "child": 13,
        "offset": {
          "x": -30,
          "y": -30,
          "z": 0
        }
      }
    },
    "15": {
      "id": 15,
      "name": "hole4 cyl",
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 10,
        "segments": 32
      }
    },
    "16": {
      "id": 16,
      "name": "hole4",
      "op": {
        "type": "Translate",
        "child": 15,
        "offset": {
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mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:56.170Z · static site, regenerate with npm run build -w @mecheval/leaderboard