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run 20260611T222627Z-f26f

a4-rounded-bar-01 · claude-mcp-claude-opus-4-7

Summary

statusfail
score0.75 (3/4)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-11T22:26:27.653Z
ended2026-06-11T22:28:15.186Z
tokens583,406 in · 5,637 out · 589,043 total
wallclock107.5s
tool calls39
task hash7d784df0d0a20935…
vcad hashdb9a6ea56e5d6e6b…

Prompt

Make a flat bar with a stadium-shaped (rectangle with semicircular ends) footprint, extruded 10mm along Z. Total end-to-end length is 80mm along X; total width is 20mm along Y. The footprint is the union of a 60mm × 20mm rectangle (x in [-30, 30], y in [-10, 10]) and two semicircles of radius 10mm centered at (-30, 0) and (30, 0). The bottom face sits on the XY plane (z = 0 to z = 10). Output a single solid (no holes or other features).

Checks

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

details: {
  "root_count": 4,
  "solids_produced": 4
}
1
bbox
pass
params + details 
params: {
  "type": "bbox",
  "min": [
    -40,
    -10,
    0
  ],
  "max": [
    40,
    10,
    10
  ],
  "tolerance_mm": 0.2
}

details: {
  "actual_max": [
    40,
    10,
    10
  ],
  "actual_min": [
    -40,
    -10,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.2
}
2
mass_props
fail
volume off by 110.3%
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 15141.59,
  "center_of_mass": [
    0,
    0,
    5
  ],
  "tolerance_pct": 1
}

details: {
  "center_of_mass": {
    "actual": [
      -1.686448959374055,
      -4.258460985627112e-17,
      5.000000000000001
    ],
    "bbox_diagonal_mm": 83.06623862918075,
    "deviation": [
      -1.686448959374055,
      -4.258460985627112e-17,
      8.881784197001252e-16
    ],
    "max_abs_deviation_mm": 1.686448959374055,
    "pass": false,
    "spec": [
      0,
      0,
      5
    ],
    "tolerance_mm": 0.8306623862918074
  },
  "volume": {
    "actual_mm3": 31841.371612546936,
    "deviation_pct": 110.29080573801653,
    "pass": false,
    "spec_mm3": 15141.59,
    "tolerance_pct": 1
  }
}
3
step_roundtrip
pass
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          30,
          10,
          10
        ],
        "original_min": [
          -30,
          -10,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          30,
          10,
          10
        ],
        "roundtripped_min": [
          -30,
          -10,
          0
        ],
        "tolerance_mm": 0.6403124237432849
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 12000,
        "pass": true,
        "roundtripped_mm3": 12000
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          -20,
          10,
          10
        ],
        "original_min": [
          -40,
          -10,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          -20,
          10,
          10
        ],
        "roundtripped_min": [
          -40,
          -10,
          0
        ],
        "tolerance_mm": 0.3
      },
      "index": 1,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815266787723419,
        "original_mm3": 3136.5486199324764,
        "pass": true,
        "roundtripped_mm3": 3121.445301534836
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          10,
          10
        ],
        "original_min": [
          20,
          -10,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          10,
          10
        ],
        "roundtripped_min": [
          20,
          -10,
          0
        ],
        "tolerance_mm": 0.3
      },
      "index": 2,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815266787723419,
        "original_mm3": 3136.5486199324764,
        "pass": true,
        "roundtripped_mm3": 3121.445301534836
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          30,
          10,
          10
        ],
        "original_min": [
          -40,
          -10,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          30,
          10,
          10
        ],
        "roundtripped_min": [
          -40,
          -10,
          0
        ],
        "tolerance_mm": 0.7348469228349535
      },
      "index": 3,
      "pass": true,
      "volume": {
        "deviation_pct": 0.27790434932945707,
        "original_mm3": 13568.274372681984,
        "pass": true,
        "roundtripped_mm3": 13530.567548071347
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create
ok
6ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cube",
  "params": {
    "size": [
      60,
      20,
      10
    ],
    "center": [
      0,
      0,
      5
    ]
  },
  "name": "Rect"
}
2
create
err
6ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cylinder",
  "params": {
    "radius": 10,
    "height": 10,
    "center": [
      -30,
      0,
      0
    ]
  },
  "name": "EndLeft"
}
3
create
err
2ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cylinder",
  "params": {
    "radius": 10,
    "height": 10,
    "center": [
      30,
      0,
      0
    ]
  },
  "name": "EndRight"
}
4
read
ok
4ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "1"
}
5
delete
ok
2ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "1"
}
6
create
ok
4ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cube",
  "params": {
    "size": [
      60,
      20,
      10
    ]
  },
  "name": "RectRaw"
}
7
create
err
5ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "translate",
  "params": {
    "offset": [
      -30,
      -10,
      0
    ]
  },
  "name": "RectMove",
  "parent_part_id": "1"
}
8
delete
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "1"
}
9
create_cad_loon
ok
13ms
args
{
  "source": "[root\n  [union\n    [translate -30 0 0 [cylinder 10 10]]\n    [union\n      [translate 30 0 0 [cylinder 10 10]]\n      [translate -30 -10 0 [cube 60 20 10]]]]\n  \"steel\"]",
  "format": "json"
}
10
create
ok
4ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 20,
      "z": 10
    }
  },
  "name": "RectRaw"
}
11
create
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -30,
      "y": -10,
      "z": 0
    },
    "child": 1
  },
  "name": "RectMove",
  "parent_part_id": "1"
}
12
create
ok
2ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cylinder",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  },
  "name": "CylL",
  "parent_part_id": "1"
}
13
read
ok
3ms
args
{
  "document_id": "doc_1781216787822_1"
}
14
delete
ok
4ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "1"
}
15
delete
ok
1ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "2"
}
16
delete
ok
1ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "3"
}
17
create
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 20,
      "z": 10
    }
  },
  "name": "Body"
}
18
create
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -30,
      "y": -10,
      "z": 0
    },
    "child": 1
  },
  "parent_part_id": "1",
  "name": "CenterRect"
}
19
read
ok
5ms
args
{
  "document_id": "doc_1781216787822_1"
}
20
read
ok
2ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "2"
}
21
read
ok
1ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "1"
}
22
delete
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "1"
}
23
read
ok
4ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "2"
}
24
create
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cylinder",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  },
  "parent_part_id": "2",
  "name": "CylLraw"
}
25
read
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "3"
}
26
delete
ok
2ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "2"
}
27
delete
ok
1ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "3"
}
28
create
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 20,
      "z": 10
    }
  },
  "name": "RectRaw"
}
29
create
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -30,
      "y": -10,
      "z": 0
    },
    "child": 1
  },
  "parent_part_id": "1",
  "name": "Rect"
}
30
delete
ok
2ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "1"
}
31
create
ok
4ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cylinder",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  },
  "name": "CylLraw"
}
32
create
ok
4ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -30,
      "y": 0,
      "z": 0
    },
    "child": 3
  },
  "parent_part_id": "3",
  "name": "CylL"
}
33
delete
ok
2ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "3"
}
34
create
ok
2ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "cylinder",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  },
  "name": "CylRraw"
}
35
create
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": 30,
      "y": 0,
      "z": 0
    },
    "child": 5
  },
  "parent_part_id": "5",
  "name": "CylR"
}
36
delete
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "part_id": "5"
}
37
create
ok
3ms
args
{
  "document_id": "doc_1781216787822_1",
  "type": "union",
  "params": {
    "left": 2,
    "right": 4
  },
  "parent_part_id": "2",
  "name": "U1"
}
38
get_document
ok
1ms
args
{
  "document_id": "doc_1781216787822_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T222627Z-f26f.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "RectRaw",
      "op": {
        "type": "Cube",
        "size": {
          "x": 60,
          "y": 20,
          "z": 10
        }
      }
    },
    "2": {
      "id": 2,
      "name": "Rect",
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -30,
          "y": -10,
          "z": 0
        }
      }
    },
    "3": {
      "id": 3,
      "name": "CylLraw",
      "op": {
        "type": "Cylinder",
        "radius": 10,
        "height": 10,
        "segments": 64
      }
    },
    "4": {
      "id": 4,
      "name": "CylL",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": -30,
          "y": 0,
          "z": 0
        }
      }
    },
    "5": {
      "id": 5,
      "name": "CylRraw",
      "op": {
        "type": "Cylinder",
        "radius": 10,
        "height": 10,
        "segments": 64
      }
    },
    "6": {
      "id": 6,
      "name": "CylR",
      "op": {
        "type": "Translate",
        "child": 5,
        "offset": {
          "x": 30,
          "y": 0,
          "z": 0
        }
      }
    },
    "7": {
      "id": 7,
      "name": "U1",
      "op": {
        "type": "Union",
        "left": 2,
        "right": 4
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 2,
      "material": "default"
    },
    {
      "root": 4,
      "material": "default"
    },
    {
      "root": 6,
      "material": "default"
    },
    {
      "root": 7,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:56.126Z · static site, regenerate with npm run build -w @mecheval/leaderboard