← mecheval / run / a2-flanged-cap-01 / claude-mcp-claude-opus-4-7 / 20260611T174133Z-2beb

run 20260611T174133Z-2beb

a2-flanged-cap-01 · claude-mcp-claude-opus-4-7

Summary

statusfail
score0.43 (3/7)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-11T17:41:33.349Z
ended2026-06-11T17:43:44.397Z
tokens653,384 in · 6,936 out · 660,320 total
wallclock131.0s
tool calls41
task hasha438f2e4d00d25d7…
vcad hash0bbf7f5a40cde74f…

Prompt

Make a circular flanged cap. Outer cylinder: outside diameter 60mm, height 8mm, axis along Z, base on the XY plane (z = 0 to z = 8). Concentric central through-hole of diameter 40mm, axis along Z. Six bolt holes of diameter 5mm on a 50mm bolt circle (radius 25mm from the axis), evenly spaced starting at 0 degrees, all parallel to Z and going fully through. Output a single solid.

Checks

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

details: {
  "root_count": 3,
  "solids_produced": 3
}
1
bbox
fail
Z off by +2.00mm
params + details 
params: {
  "type": "bbox",
  "min": [
    -30,
    -30,
    0
  ],
  "max": [
    30,
    30,
    8
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    30,
    30,
    10
  ],
  "actual_min": [
    -30,
    -30,
    -1
  ],
  "deviation_max": [
    0,
    0,
    2
  ],
  "deviation_min": [
    0,
    0,
    -1
  ],
  "max_abs_deviation_mm": 2,
  "tolerance_mm": 0.1
}
2
mass_props
fail
volume off by 11.3%
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 11623.89,
  "center_of_mass": [
    0,
    0,
    4
  ],
  "tolerance_pct": 0.5
}

details: {
  "center_of_mass": {
    "actual": [
      0.37701892313032787,
      1.3230403909808912e-15,
      4.0150807569754186
    ],
    "bbox_diagonal_mm": 85.56284240252891,
    "deviation": [
      0.37701892313032787,
      1.3230403909808912e-15,
      0.015080756975418552
    ],
    "max_abs_deviation_mm": 0.37701892313032787,
    "pass": true,
    "spec": [
      0,
      0,
      4
    ],
    "tolerance_mm": 0.4278142120126446
  },
  "volume": {
    "actual_mm3": 12936.37465192491,
    "deviation_pct": 11.291268688235276,
    "pass": false,
    "spec_mm3": 11623.89,
    "tolerance_pct": 0.5
  }
}
3
hole_count
pass
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 40,
  "expected": 1,
  "diameter_tolerance_mm": 0.1
}

details: {
  "actual": 1,
  "diameter_mm": 40,
  "diameter_tolerance_mm": 0.1,
  "expected": 1,
  "found": [
    [
      0,
      0,
      40
    ]
  ]
}
4
hole_count
fail
found 0/6 holes of ⌀5mm
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 5,
  "expected": 6,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 0,
  "diameter_mm": 5,
  "diameter_tolerance_mm": 0.05,
  "expected": 6,
  "found": []
}
5
hole_positions
fail
6/6 mispositioned
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 5,
  "positions": [
    [
      25,
      0,
      0
    ],
    [
      12.5,
      21.65,
      0
    ],
    [
      -12.5,
      21.65,
      0
    ],
    [
      -25,
      0,
      0
    ],
    [
      -12.5,
      -21.65,
      0
    ],
    [
      12.5,
      -21.65,
      0
    ]
  ],
  "tolerance_mm": 0.15
}

details: {
  "diameter_mm": 5,
  "per_expected": [
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        25,
        0
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        12.5,
        21.65
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -12.5,
        21.65
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -25,
        0
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -12.5,
        -21.65
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        12.5,
        -21.65
      ]
    }
  ],
  "tolerance_mm": 0.15,
  "unmatched_extras": []
}
6
step_roundtrip
pass
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          30,
          30,
          8
        ],
        "original_min": [
          -30,
          -30,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          30,
          30,
          8
        ],
        "roundtripped_min": [
          -30,
          -30,
          0
        ],
        "tolerance_mm": 0.8522910301065006
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0.6099319923047886,
        "original_mm3": 12546.194008037162,
        "pass": true,
        "roundtripped_mm3": 12469.670756965517
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          2.5,
          2.5,
          10
        ],
        "original_min": [
          -2.5,
          -2.5,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          2.5,
          2.5,
          10
        ],
        "roundtripped_min": [
          -2.5,
          -2.5,
          0
        ],
        "tolerance_mm": 0.1224744871391589
      },
      "index": 1,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 195.09032226859117,
        "pass": true,
        "roundtripped_mm3": 195.09032226859117
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          27.5,
          2.5,
          9
        ],
        "original_min": [
          22.5,
          -2.5,
          -1
        ],
        "pass": true,
        "roundtripped_max": [
          27.5,
          2.5,
          9
        ],
        "roundtripped_min": [
          22.5,
          -2.5,
          -1
        ],
        "tolerance_mm": 0.1224744871391589
      },
      "index": 2,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 195.0903216191682,
        "pass": true,
        "roundtripped_mm3": 195.0903216191682
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

0
open_document
ok
3ms
args
{}
1
create
err
6ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "difference",
  "name": "Flanged Cap",
  "params": {
    "children": [
      {
        "type": "translate",
        "params": {
          "x": 30,
          "y": 30,
          "z": 0,
          "children": [
            {
              "type": "cylinder",
              "params": {
                "radius": 30,
                "height": 8
              }
            }
          ]
        }
      },
      {
        "type": "translate",
        "params": {
          "x": 30,
          "y": 30,
          "z": -1,
          "children": [
            {
              "type": "cylinder",
              "params": {
                "radius": 20,
                "height": 10
              }
            }
          ]
        }
      },
      {
        "type": "circular_pattern",
        "params": {
          "origin": {
            "x": 30,
            "y": 30,
            "z": 0
          },
          "axis": {
            "x": 0,
            "y": 0,
            "z": 1
          },
          "count": 6,
          "angle": 360,
          "children": [
            {
              "type": "translate",
              "params": {
                "x": 55,
                "y": 30,
                "z": -1,
                "children": [
                  {
                    "type": "cylinder",
                    "params": {
                      "radius": 2.5,
                      "height": 10
                    }
                  }
                ]
              }
            }
          ]
        }
      }
    ]
  }
}
2
read
ok
2ms
args
{
  "document_id": "doc_1781199693530_1"
}
3
create_cad_loon
ok
13ms
args
{
  "source": "[root\n  [difference\n    [union\n      [translate 25 0 -1 [cylinder 2.5 10]]\n      [union\n        [rotate 0 0 60 [translate 25 0 -1 [cylinder 2.5 10]]]\n        [union\n          [rotate 0 0 120 [translate 25 0 -1 [cylinder 2.5 10]]]\n          [union\n            [rotate 0 0 180 [translate 25 0 -1 [cylinder 2.5 10]]]\n            [union\n              [rotate 0 0 240 [translate 25 0 -1 [cylinder 2.5 10]]]\n              [union\n                [rotate 0 0 300 [translate 25 0 -1 [cylinder 2.5 10]]]\n                [translate 0 0 -1 [cylinder 20 10]]]]]]]]\n    [cylinder 30 8]]\n  \"steel\"]",
  "format": "json"
}
4
create
err
5ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "Outer Body",
  "params": {
    "radius": 30,
    "height": 8
  }
}
5
create
err
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "Center Hole Cyl",
  "params": {
    "radius": 20,
    "height": 10
  }
}
6
create
err
1ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "Bolt Hole Cyl",
  "params": {
    "radius": 2.5,
    "height": 10
  }
}
7
create
ok
4ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "Outer Body",
  "params": {
    "radius": 30,
    "height": 8,
    "segments": 64
  }
}
8
delete
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "1"
}
9
create
ok
5ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "body",
  "params": {
    "radius": 30,
    "height": 8,
    "segments": 64
  }
}
10
create
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "center_hole",
  "params": {
    "radius": 20,
    "height": 10,
    "segments": 64
  }
}
11
create
ok
4ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "translate",
  "name": "center_hole_tr",
  "parent_part_id": "2",
  "params": {
    "child": 2,
    "offset": {
      "x": 0,
      "y": 0,
      "z": -1
    }
  }
}
12
read
ok
3ms
args
{
  "document_id": "doc_1781199693530_1"
}
13
read
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "2"
}
14
read
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "3"
}
15
delete
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "1"
}
16
delete
ok
1ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "2"
}
17
delete
ok
1ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "3"
}
18
read
ok
2ms
args
{
  "document_id": "doc_1781199693530_1"
}
19
create
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "body",
  "params": {
    "radius": 30,
    "height": 8,
    "segments": 64
  }
}
20
create
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "ctr_hole",
  "parent_part_id": "1",
  "params": {
    "radius": 20,
    "height": 10,
    "segments": 64
  }
}
21
read
ok
1ms
args
{
  "document_id": "doc_1781199693530_1"
}
22
read
ok
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "2"
}
23
delete
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "1"
}
24
delete
ok
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "2"
}
25
create
ok
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "body",
  "params": {
    "radius": 30,
    "height": 8,
    "segments": 64
  }
}
26
create
ok
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "ctr_hole_raw",
  "params": {
    "radius": 20,
    "height": 10,
    "segments": 64
  }
}
27
create
err
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "translate",
  "name": "ctr_hole_pos",
  "parent_part_id": "2",
  "params": {
    "offset": {
      "x": 0,
      "y": 0,
      "z": -1
    }
  }
}
28
create
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "translate",
  "name": "ctr_hole_pos",
  "parent_part_id": "2",
  "params": {
    "child": 2,
    "offset": {
      "x": 0,
      "y": 0,
      "z": -1
    }
  }
}
29
read
ok
2ms
args
{
  "document_id": "doc_1781199693530_1"
}
30
delete
ok
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "2"
}
31
create
ok
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "difference",
  "name": "body_minus_ctr",
  "parent_part_id": "1",
  "params": {
    "left": 1,
    "right": 3
  }
}
32
read
ok
2ms
args
{
  "document_id": "doc_1781199693530_1"
}
33
read
ok
1ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "4"
}
34
delete
ok
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "1"
}
35
delete
ok
1ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "3"
}
36
read
ok
2ms
args
{
  "document_id": "doc_1781199693530_1",
  "part_id": "4"
}
37
create
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "cylinder",
  "name": "bolt_hole_raw",
  "params": {
    "radius": 2.5,
    "height": 10,
    "segments": 32
  }
}
38
create
ok
3ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "translate",
  "name": "bolt_hole_pos",
  "parent_part_id": "5",
  "params": {
    "child": 5,
    "offset": {
      "x": 25,
      "y": 0,
      "z": -1
    }
  }
}
39
create
err
4ms
args
{
  "document_id": "doc_1781199693530_1",
  "type": "circular_pattern",
  "name": "bolt_holes",
  "parent_part_id": "6",
  "params": {
    "child": 6,
    "origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "axis": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "count": 6,
    "angle": 360
  }
}
40
get_document
ok
2ms
args
{
  "document_id": "doc_1781199693530_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T174133Z-2beb.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "body",
      "op": {
        "type": "Cylinder",
        "radius": 30,
        "height": 8,
        "segments": 64
      }
    },
    "2": {
      "id": 2,
      "name": "ctr_hole_raw",
      "op": {
        "type": "Cylinder",
        "radius": 20,
        "height": 10,
        "segments": 64
      }
    },
    "3": {
      "id": 3,
      "name": "ctr_hole_pos",
      "op": {
        "type": "Translate",
        "child": 2,
        "offset": {
          "x": 0,
          "y": 0,
          "z": -1
        }
      }
    },
    "4": {
      "id": 4,
      "name": "body_minus_ctr",
      "op": {
        "type": "Difference",
        "left": 1,
        "right": 3
      }
    },
    "5": {
      "id": 5,
      "name": "bolt_hole_raw",
      "op": {
        "type": "Cylinder",
        "radius": 2.5,
        "height": 10,
        "segments": 32
      }
    },
    "6": {
      "id": 6,
      "name": "bolt_hole_pos",
      "op": {
        "type": "Translate",
        "child": 5,
        "offset": {
          "x": 25,
          "y": 0,
          "z": -1
        }
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 4,
      "material": "default"
    },
    {
      "root": 5,
      "material": "default"
    },
    {
      "root": 6,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:55.597Z · static site, regenerate with npm run build -w @mecheval/leaderboard