← mecheval / run / a4-slotted-bracket-01 / claude-mcp-claude-opus-4-7 / 20260611T222815Z-79b6

run 20260611T222815Z-79b6

a4-slotted-bracket-01 · claude-mcp-claude-opus-4-7

Summary

statusfail
score0.83 (5/6)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-11T22:28:15.219Z
ended2026-06-11T22:30:29.113Z
tokens639,312 in · 7,849 out · 647,161 total
wallclock133.8s
tool calls51
task hash42dec6ce3ad22666…
vcad hash46454ddda0ae4f64…

Prompt

Make a flat rectangular plate 80mm × 40mm × 8mm thick, centered in X and Y with the bottom face on the XY plane (so it spans x in [-40, 40], y in [-20, 20], z in [0, 8]). Cut a stadium-shaped (rectangle with semicircular ends) slot all the way through the plate, axes along the X direction. The slot has total end-to-end length 50mm and width 10mm: the centers of the two semicircular ends are at (-20, 0) and (20, 0), each of radius 5mm, joined by a 40mm-long, 10mm-wide rectangular section (x in [-20, 20], y in [-5, 5]). The slot is cut through the full plate thickness. Output a single solid.

Checks

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

details: {
  "root_count": 7,
  "solids_produced": 7
}
1
bbox
pass
params + details 
params: {
  "type": "bbox",
  "min": [
    -40,
    -20,
    0
  ],
  "max": [
    40,
    20,
    8
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    40,
    20,
    8
  ],
  "actual_min": [
    -40,
    -20,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.1
}
2
mass_props
fail
volume off by 171.8%
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 21771.68,
  "tolerance_pct": 1
}

details: {
  "volume": {
    "actual_mm3": 59168.27434003836,
    "deviation_pct": 171.76715044515794,
    "pass": false,
    "spec_mm3": 21771.68,
    "tolerance_pct": 1
  }
}
3
hole_count
pass
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 10,
  "expected": 2,
  "diameter_tolerance_mm": 0.1
}

details: {
  "actual": 2,
  "diameter_mm": 10,
  "diameter_tolerance_mm": 0.1,
  "expected": 2,
  "found": [
    [
      -20,
      0,
      10
    ],
    [
      20,
      0,
      10
    ]
  ]
}
4
hole_positions
pass
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 10,
  "positions": [
    [
      -20,
      0,
      0
    ],
    [
      20,
      0,
      0
    ]
  ],
  "tolerance_mm": 0.2
}

details: {
  "diameter_mm": 10,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        -20,
        0
      ],
      "pass": true,
      "spec_xy": [
        -20,
        0
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        20,
        0
      ],
      "pass": true,
      "spec_xy": [
        20,
        0
      ]
    }
  ],
  "tolerance_mm": 0.2,
  "unmatched_extras": []
}
5
step_roundtrip
pass
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          20,
          8
        ],
        "original_min": [
          -40,
          -20,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          20,
          8
        ],
        "roundtripped_min": [
          -40,
          -20,
          0
        ],
        "tolerance_mm": 0.897997772825746
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 25600,
        "pass": true,
        "roundtripped_mm3": 25600
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          20,
          5,
          8
        ],
        "original_min": [
          -20,
          -5,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          20,
          5,
          8
        ],
        "roundtripped_min": [
          -20,
          -5,
          0
        ],
        "tolerance_mm": 0.42
      },
      "index": 1,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 3200,
        "pass": true,
        "roundtripped_mm3": 3200
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          -15,
          5,
          8
        ],
        "original_min": [
          -25,
          -5,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          -15,
          5,
          8
        ],
        "roundtripped_min": [
          -25,
          -5,
          0
        ],
        "tolerance_mm": 0.16248076809271922
      },
      "index": 2,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815261197030395,
        "original_mm3": 627.3097320215611,
        "pass": true,
        "roundtripped_mm3": 624.2890718104381
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          25,
          5,
          8
        ],
        "original_min": [
          15,
          -5,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          25,
          5,
          8
        ],
        "roundtripped_min": [
          15,
          -5,
          0
        ],
        "tolerance_mm": 0.16248076809271922
      },
      "index": 3,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815261197030395,
        "original_mm3": 627.3097320215611,
        "pass": true,
        "roundtripped_mm3": 624.2890718104381
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          20,
          5,
          8
        ],
        "original_min": [
          -25,
          -5,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          20,
          5,
          8
        ],
        "roundtripped_min": [
          -25,
          -5,
          0
        ],
        "tolerance_mm": 0.4678675026115834
      },
      "index": 4,
      "pass": true,
      "volume": {
        "deviation_pct": 0.027760954272166675,
        "original_mm3": 3513.6548759953016,
        "pass": true,
        "roundtripped_mm3": 3512.679451871895
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          25,
          5,
          8
        ],
        "original_min": [
          -25,
          -5,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          25,
          5,
          8
        ],
        "roundtripped_min": [
          -25,
          -5,
          0
        ],
        "tolerance_mm": 0.5161395160225576
      },
      "index": 5,
      "pass": true,
      "volume": {
        "deviation_pct": 0.05179391060549848,
        "original_mm3": 3827.3097519906028,
        "pass": true,
        "roundtripped_mm3": 3825.327438599061
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          20,
          8
        ],
        "original_min": [
          -40,
          -20,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          20,
          8
        ],
        "roundtripped_min": [
          -40,
          -20,
          0
        ],
        "tolerance_mm": 0.897997772825746
      },
      "index": 6,
      "pass": true,
      "volume": {
        "deviation_pct": 0.009249102951307417,
        "original_mm3": 21772.690248009345,
        "pass": true,
        "roundtripped_mm3": 21774.704026545653
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create_cad_loon
ok
5ms
args
{
  "source": "[let plate [translate -40 -20 0 [cube 80 40 8]]\n  [let rect [translate -20 -5 0 [cube 40 10 8]]\n    [let cyl1 [translate -20 0 0 [cylinder 5 8]]\n      [let cyl2 [translate 20 0 0 [cylinder 5 8]]\n        [let slot [union cyl1 [union cyl2 rect]]\n          [difference slot plate]]]]]]",
  "format": "json"
}
2
create
ok
7ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cube",
  "name": "PlateBox",
  "params": {
    "size": {
      "x": 80,
      "y": 40,
      "z": 8
    }
  }
}
3
create
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cube",
  "name": "SlotRect",
  "params": {
    "size": {
      "x": 40,
      "y": 10,
      "z": 8
    }
  }
}
4
create
err
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cylinder",
  "name": "SlotCyl1",
  "params": {
    "radius": 5,
    "height": 8
  }
}
5
create
err
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cylinder",
  "name": "SlotCyl2",
  "params": {
    "radius": 5,
    "height": 8
  }
}
6
create
ok
4ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cylinder",
  "name": "SlotCyl1",
  "params": {
    "radius": 5,
    "height": 8,
    "segments": 64
  }
}
7
create
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cylinder",
  "name": "SlotCyl2",
  "params": {
    "radius": 5,
    "height": 8,
    "segments": 64
  }
}
8
read
ok
4ms
args
{
  "document_id": "doc_1781216895390_1"
}
9
delete
ok
4ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "1"
}
10
delete
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "2"
}
11
delete
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "3"
}
12
delete
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "4"
}
13
create
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cube",
  "name": "Plate",
  "params": {
    "size": {
      "x": 80,
      "y": 40,
      "z": 8
    }
  }
}
14
create
err
4ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -40,
      "y": -20,
      "z": 0
    }
  },
  "parent_part_id": "1"
}
15
create
ok
5ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -40,
      "y": -20,
      "z": 0
    },
    "child": 1
  },
  "parent_part_id": "1"
}
16
read
ok
2ms
args
{
  "document_id": "doc_1781216895390_1"
}
17
read
ok
3ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "2"
}
18
delete
ok
4ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "2"
}
19
create
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cube",
  "name": "Plate",
  "params": {
    "size": {
      "x": 80,
      "y": 40,
      "z": 8
    }
  }
}
20
create
ok
3ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -40,
      "y": -20,
      "z": 0
    },
    "child": 2
  },
  "parent_part_id": "2"
}
21
create
ok
3ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cube",
  "name": "SlotRect",
  "params": {
    "size": {
      "x": 40,
      "y": 10,
      "z": 8
    }
  },
  "parent_part_id": "3"
}
22
read
ok
3ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "4"
}
23
read
ok
3ms
args
{
  "document_id": "doc_1781216895390_1"
}
24
delete
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "1"
}
25
delete
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "2"
}
26
delete
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "3"
}
27
delete
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "4"
}
28
create
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cube",
  "name": "PlateBox",
  "params": {
    "size": {
      "x": 80,
      "y": 40,
      "z": 8
    }
  }
}
29
create
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cube",
  "name": "SlotRect",
  "params": {
    "size": {
      "x": 40,
      "y": 10,
      "z": 8
    }
  }
}
30
create
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cylinder",
  "name": "SlotCyl1",
  "params": {
    "radius": 5,
    "height": 8,
    "segments": 64
  }
}
31
create
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "cylinder",
  "name": "SlotCyl2",
  "params": {
    "radius": 5,
    "height": 8,
    "segments": 64
  }
}
32
create
ok
3ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -40,
      "y": -20,
      "z": 0
    },
    "child": 1
  },
  "parent_part_id": "1"
}
33
create
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -20,
      "y": -5,
      "z": 0
    },
    "child": 2
  },
  "parent_part_id": "2"
}
34
create
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": -20,
      "y": 0,
      "z": 0
    },
    "child": 3
  },
  "parent_part_id": "3"
}
35
create
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": 20,
      "y": 0,
      "z": 0
    },
    "child": 4
  },
  "parent_part_id": "4"
}
36
read
ok
3ms
args
{
  "document_id": "doc_1781216895390_1"
}
37
delete
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "1"
}
38
delete
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "2"
}
39
delete
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "3"
}
40
delete
ok
1ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "4"
}
41
read
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "5"
}
42
create
err
3ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "union",
  "name": "SlotUnion1",
  "params": {
    "children": [
      6,
      7
    ]
  },
  "parent_part_id": "6"
}
43
create
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "union",
  "name": "SlotUnion1",
  "params": {
    "left": 6,
    "right": 7
  },
  "parent_part_id": "6"
}
44
read
ok
3ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "9"
}
45
create
ok
3ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "union",
  "name": "SlotUnion2",
  "params": {
    "left": 9,
    "right": 8
  },
  "parent_part_id": "9"
}
46
read
ok
2ms
args
{
  "document_id": "doc_1781216895390_1"
}
47
read
ok
2ms
args
{
  "document_id": "doc_1781216895390_1",
  "part_id": "10"
}
48
create
ok
3ms
args
{
  "document_id": "doc_1781216895390_1",
  "type": "difference",
  "name": "PlateWithSlot",
  "params": {
    "left": 5,
    "right": 10
  },
  "parent_part_id": "5"
}
49
read
ok
3ms
args
{
  "document_id": "doc_1781216895390_1"
}
50
get_document
ok
1ms
args
{
  "document_id": "doc_1781216895390_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T222815Z-79b6.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "PlateBox",
      "op": {
        "type": "Cube",
        "size": {
          "x": 80,
          "y": 40,
          "z": 8
        }
      }
    },
    "2": {
      "id": 2,
      "name": "SlotRect",
      "op": {
        "type": "Cube",
        "size": {
          "x": 40,
          "y": 10,
          "z": 8
        }
      }
    },
    "3": {
      "id": 3,
      "name": "SlotCyl1",
      "op": {
        "type": "Cylinder",
        "radius": 5,
        "height": 8,
        "segments": 64
      }
    },
    "4": {
      "id": 4,
      "name": "SlotCyl2",
      "op": {
        "type": "Cylinder",
        "radius": 5,
        "height": 8,
        "segments": 64
      }
    },
    "5": {
      "id": 5,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -40,
          "y": -20,
          "z": 0
        }
      }
    },
    "6": {
      "id": 6,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 2,
        "offset": {
          "x": -20,
          "y": -5,
          "z": 0
        }
      }
    },
    "7": {
      "id": 7,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": -20,
          "y": 0,
          "z": 0
        }
      }
    },
    "8": {
      "id": 8,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 4,
        "offset": {
          "x": 20,
          "y": 0,
          "z": 0
        }
      }
    },
    "9": {
      "id": 9,
      "name": "SlotUnion1",
      "op": {
        "type": "Union",
        "left": 6,
        "right": 7
      }
    },
    "10": {
      "id": 10,
      "name": "SlotUnion2",
      "op": {
        "type": "Union",
        "left": 9,
        "right": 8
      }
    },
    "11": {
      "id": 11,
      "name": "PlateWithSlot",
      "op": {
        "type": "Difference",
        "left": 5,
        "right": 10
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 5,
      "material": "default"
    },
    {
      "root": 6,
      "material": "default"
    },
    {
      "root": 7,
      "material": "default"
    },
    {
      "root": 8,
      "material": "default"
    },
    {
      "root": 9,
      "material": "default"
    },
    {
      "root": 10,
      "material": "default"
    },
    {
      "root": 11,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:56.144Z · static site, regenerate with npm run build -w @mecheval/leaderboard