← mecheval / run / a4-rounded-bar-01 / claude-mcp-claude-opus-4-7 / 20260611T222434Z-a4d3

run 20260611T222434Z-a4d3

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)
started2026-06-11T22:24:34.522Z
ended2026-06-11T22:26:27.621Z
tokens604,028 in · 6,063 out · 610,091 total
wallclock112.9s
tool calls41
task hash7d784df0d0a20935…
vcad hash0fb1951dd15b85a4…

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": 2,
  "solids_produced": 2
}
1
bbox
fail
X off by -10.00mm
params + details 
params: {
  "type": "bbox",
  "min": [
    -40,
    -10,
    0
  ],
  "max": [
    40,
    10,
    10
  ],
  "tolerance_mm": 0.2
}

details: {
  "actual_max": [
    30,
    10,
    10
  ],
  "actual_min": [
    -30,
    -10,
    0
  ],
  "deviation_max": [
    -10,
    0,
    0
  ],
  "deviation_min": [
    10,
    0,
    0
  ],
  "max_abs_deviation_mm": 10,
  "tolerance_mm": 0.2
}
2
mass_props
pass
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 15141.59,
  "center_of_mass": [
    0,
    0,
    5
  ],
  "tolerance_pct": 1
}

details: {
  "center_of_mass": {
    "actual": [
      -5.633062800478753e-18,
      4.1739430611880755e-17,
      5
    ],
    "bbox_diagonal_mm": 64.03124237432849,
    "deviation": [
      -5.633062800478753e-18,
      4.1739430611880755e-17,
      0
    ],
    "max_abs_deviation_mm": 4.1739430611880755e-17,
    "pass": true,
    "spec": [
      0,
      0,
      5
    ],
    "tolerance_mm": 0.6403124237432849
  },
  "volume": {
    "actual_mm3": 15136.548501459163,
    "deviation_pct": 0.03329570105145485,
    "pass": true,
    "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": [
          10,
          10,
          10
        ],
        "original_min": [
          -10,
          -10,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          10,
          10,
          10
        ],
        "roundtripped_min": [
          -10,
          -10,
          0
        ],
        "tolerance_mm": 0.3
      },
      "index": 1,
      "pass": true,
      "volume": {
        "deviation_pct": 0.48152755025717725,
        "original_mm3": 3136.548501459163,
        "pass": true,
        "roundtripped_mm3": 3121.4451562974587
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create
err
5ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "union",
  "name": "Stadium Bar",
  "params": {
    "children": [
      {
        "type": "translate",
        "params": {
          "x": -30,
          "y": -10,
          "z": 0,
          "child": {
            "type": "cube",
            "params": {
              "x": 60,
              "y": 20,
              "z": 10
            }
          }
        }
      },
      {
        "type": "translate",
        "params": {
          "x": -30,
          "y": 0,
          "z": 0,
          "child": {
            "type": "cylinder",
            "params": {
              "r": 10,
              "h": 10
            }
          }
        }
      },
      {
        "type": "translate",
        "params": {
          "x": 30,
          "y": 0,
          "z": 0,
          "child": {
            "type": "cylinder",
            "params": {
              "r": 10,
              "h": 10
            }
          }
        }
      }
    ]
  }
}
2
create_cad_loon
ok
11ms
args
{
  "source": "[root [union [translate -30 -10 0 [cube 60 20 10]] [union [translate -30 0 0 [cylinder 10 10]] [translate 30 0 0 [cylinder 10 10]]]] \"steel\"]",
  "format": "json"
}
3
create
err
4ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cylinder",
  "name": "cyl_left",
  "params": {
    "radius": 10,
    "height": 10
  }
}
4
create
ok
5ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cylinder",
  "name": "cyl_left",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  }
}
5
create
ok
4ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cylinder",
  "name": "cyl_right",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  }
}
6
create
ok
2ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cube",
  "name": "center_rect",
  "params": {
    "size": {
      "x": 60,
      "y": 20,
      "z": 10
    }
  }
}
7
delete
ok
6ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "1"
}
8
delete
ok
1ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "2"
}
9
delete
ok
1ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "3"
}
10
create
err
4ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "union",
  "name": "Stadium Bar",
  "params": {
    "left": {
      "type": "translate",
      "params": {
        "offset": {
          "x": -30,
          "y": -10,
          "z": 0
        },
        "child": {
          "type": "cube",
          "params": {
            "size": {
              "x": 60,
              "y": 20,
              "z": 10
            }
          }
        }
      }
    },
    "right": {
      "type": "union",
      "params": {
        "left": {
          "type": "translate",
          "params": {
            "offset": {
              "x": -30,
              "y": 0,
              "z": 0
            },
            "child": {
              "type": "cylinder",
              "params": {
                "radius": 10,
                "height": 10,
                "segments": 64
              }
            }
          }
        },
        "right": {
          "type": "translate",
          "params": {
            "offset": {
              "x": 30,
              "y": 0,
              "z": 0
            },
            "child": {
              "type": "cylinder",
              "params": {
                "radius": 10,
                "height": 10,
                "segments": 64
              }
            }
          }
        }
      }
    }
  }
}
11
create
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 20,
      "z": 10
    }
  }
}
12
create
ok
6ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "translate",
  "parent_part_id": "1",
  "params": {
    "child": 1,
    "offset": {
      "x": -30,
      "y": -10,
      "z": 0
    }
  }
}
13
read
ok
3ms
args
{
  "document_id": "doc_1781216674693_1"
}
14
read
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "2"
}
15
delete
ok
1ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "1"
}
16
read
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "2"
}
17
create
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cylinder",
  "parent_part_id": "2",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  }
}
18
read
ok
2ms
args
{
  "document_id": "doc_1781216674693_1"
}
19
read
ok
2ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "3"
}
20
delete
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "2"
}
21
delete
ok
1ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "3"
}
22
create
ok
2ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cube",
  "name": "Stadium Bar",
  "params": {
    "size": {
      "x": 60,
      "y": 20,
      "z": 10
    }
  }
}
23
create
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "translate",
  "parent_part_id": "1",
  "params": {
    "child": 1,
    "offset": {
      "x": -30,
      "y": -10,
      "z": 0
    }
  }
}
24
read
ok
3ms
args
{
  "document_id": "doc_1781216674693_1"
}
25
read
ok
2ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "1"
}
26
read
ok
1ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "2"
}
27
delete
ok
4ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "1"
}
28
create
ok
2ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cylinder",
  "parent_part_id": "2",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  }
}
29
read
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "3"
}
30
delete
ok
2ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "2"
}
31
delete
ok
1ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "3"
}
32
create
ok
2ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 20,
      "z": 10
    }
  }
}
33
create
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "translate",
  "parent_part_id": "1",
  "params": {
    "child": 1,
    "offset": {
      "x": -30,
      "y": -10,
      "z": 0
    }
  }
}
34
delete
ok
2ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "1"
}
35
create
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cylinder",
  "parent_part_id": "2",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  }
}
36
read
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "3"
}
37
delete
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "3"
}
38
read
ok
1ms
args
{
  "document_id": "doc_1781216674693_1",
  "part_id": "2"
}
39
create
ok
3ms
args
{
  "document_id": "doc_1781216674693_1",
  "type": "cylinder",
  "params": {
    "radius": 10,
    "height": 10,
    "segments": 64
  }
}
40
get_document
ok
1ms
args
{
  "document_id": "doc_1781216674693_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T222434Z-a4d3.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": null,
      "op": {
        "type": "Cube",
        "size": {
          "x": 60,
          "y": 20,
          "z": 10
        }
      }
    },
    "2": {
      "id": 2,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -30,
          "y": -10,
          "z": 0
        }
      }
    },
    "3": {
      "id": 3,
      "name": null,
      "op": {
        "type": "Cylinder",
        "radius": 10,
        "height": 10,
        "segments": 64
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 2,
      "material": "default"
    },
    {
      "root": 3,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:56.122Z · static site, regenerate with npm run build -w @mecheval/leaderboard