← mecheval / run / a2-l-bracket-01 / claude-mcp-claude-opus-4-7 / 20260611T220542Z-fdb0

run 20260611T220542Z-fdb0

a2-l-bracket-01 · claude-mcp-claude-opus-4-7

Summary

statusfail
score0.17 (1/6)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-11T22:05:42.720Z
ended2026-06-11T22:07:52.497Z
tokens581,395 in · 6,615 out · 588,010 total
wallclock129.9s
tool calls38
task hashc8efa8964b7ad82a…
vcad hash36c7bf0b0ce941d4…

Prompt

Make an L-shaped mounting bracket. The base lies in the XY plane, occupying x in [0, 50], y in [0, 30], z in [0, 4] (50mm long, 30mm wide, 4mm thick). A vertical wall stands on the +X edge: x in [46, 50], y in [0, 30], z in [4, 30] (4mm thick, 30mm wide, rising to z = 30). Two through-holes of diameter 5mm pierce the base parallel to Z, centered at (10, 15) and (35, 15) on the top face. Output a single solid.

Checks

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

details: {
  "root_count": 5,
  "solids_produced": 5
}
1
bbox
fail
X off by -2.50mm
params + details 
params: {
  "type": "bbox",
  "min": [
    0,
    0,
    0
  ],
  "max": [
    50,
    30,
    30
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    50,
    30,
    30
  ],
  "actual_min": [
    -2.5,
    -2.5,
    -1
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    -2.5,
    -2.5,
    -1
  ],
  "max_abs_deviation_mm": 2.5,
  "tolerance_mm": 0.1
}
2
mass_props
fail
volume off by 39.2%
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 8962.92,
  "tolerance_pct": 0.5
}

details: {
  "volume": {
    "actual_mm3": 12475.241151284496,
    "deviation_pct": 39.18724200689614,
    "pass": false,
    "spec_mm3": 8962.92,
    "tolerance_pct": 0.5
  }
}
3
hole_count
fail
found 0/2 holes of ⌀5mm
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 5,
  "expected": 2,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 0,
  "diameter_mm": 5,
  "diameter_tolerance_mm": 0.05,
  "expected": 2,
  "found": []
}
4
hole_positions
fail
2/2 mispositioned
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 5,
  "positions": [
    [
      10,
      15,
      0
    ],
    [
      35,
      15,
      0
    ]
  ],
  "tolerance_mm": 0.1
}

details: {
  "diameter_mm": 5,
  "per_expected": [
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        10,
        15
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        35,
        15
      ]
    }
  ],
  "tolerance_mm": 0.1,
  "unmatched_extras": []
}
5
step_roundtrip
fail
STEP drift on 2/5 solids
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 0.1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          50,
          30,
          4
        ],
        "original_min": [
          0,
          0,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          50,
          30,
          4
        ],
        "roundtripped_min": [
          0,
          0,
          0
        ],
        "tolerance_mm": 0.05844655678480983
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 6000,
        "pass": true,
        "roundtripped_mm3": 6000
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          4,
          30,
          26
        ],
        "original_min": [
          0,
          0,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          4,
          30,
          26
        ],
        "roundtripped_min": [
          0,
          0,
          0
        ],
        "tolerance_mm": 0.03989987468652001
      },
      "index": 1,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 3120,
        "pass": true,
        "roundtripped_mm3": 3120
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          2.5,
          2.5,
          6
        ],
        "original_min": [
          -2.5,
          -2.5,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          2.5,
          2.5,
          6
        ],
        "roundtripped_min": [
          -2.5,
          -2.5,
          0
        ],
        "tolerance_mm": 0.01
      },
      "index": 2,
      "pass": false,
      "volume": {
        "deviation_pct": 0.48152755025699195,
        "original_mm3": 117.62056880471842,
        "pass": false,
        "roundtripped_mm3": 117.05419336115472
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          50,
          30,
          30
        ],
        "original_min": [
          46,
          0,
          4
        ],
        "pass": true,
        "roundtripped_max": [
          50,
          30,
          30
        ],
        "roundtripped_min": [
          46,
          0,
          4
        ],
        "tolerance_mm": 0.03989987468652001
      },
      "index": 3,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 3120,
        "pass": true,
        "roundtripped_mm3": 3120
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          12.5,
          17.5,
          5
        ],
        "original_min": [
          7.5,
          12.5,
          -1
        ],
        "pass": true,
        "roundtripped_max": [
          12.5,
          17.5,
          5
        ],
        "roundtripped_min": [
          7.5,
          12.5,
          -1
        ],
        "tolerance_mm": 0.01
      },
      "index": 4,
      "pass": false,
      "volume": {
        "deviation_pct": 0.4815286035203956,
        "original_mm3": 117.62058247977802,
        "pass": false,
        "roundtripped_mm3": 117.05420573151059
      }
    }
  ],
  "tolerance_pct": 0.1
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create_cad_loon
ok
10ms
args
{
  "source": "[let bracket\n  [union\n    [translate 46 0 4 [cube 4 30 26]]\n    [cube 50 30 4]]\n  [difference\n    [translate 35 15 -1 [cylinder 2.5 6]]\n    [difference\n      [translate 10 15 -1 [cylinder 2.5 6]]\n      bracket]]]",
  "format": "json"
}
2
create
ok
7ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cube",
  "name": "Base",
  "params": {
    "size": {
      "x": 50,
      "y": 30,
      "z": 4
    }
  }
}
3
create
ok
5ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cube",
  "name": "WallRaw",
  "params": {
    "size": {
      "x": 4,
      "y": 30,
      "z": 26
    }
  }
}
4
read
ok
4ms
args
{
  "document_id": "doc_1781215542952_1"
}
5
delete
ok
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "1"
}
6
delete
ok
1ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "2"
}
7
create
ok
6ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cube",
  "name": "Base",
  "params": {
    "size": {
      "x": 50,
      "y": 30,
      "z": 4
    }
  }
}
8
create
ok
4ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cube",
  "name": "WallRaw",
  "parent_part_id": "1",
  "params": {
    "size": {
      "x": 4,
      "y": 30,
      "z": 26
    }
  }
}
9
read
ok
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "1"
}
10
read
ok
5ms
args
{
  "document_id": "doc_1781215542952_1"
}
11
read
ok
3ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "2"
}
12
delete
ok
3ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "1"
}
13
delete
ok
1ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "2"
}
14
create
ok
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cube",
  "name": "Base",
  "params": {
    "size": {
      "x": 50,
      "y": 30,
      "z": 4
    }
  }
}
15
create
err
1ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "union",
  "name": "AddWall",
  "parent_part_id": "1",
  "params": {}
}
16
create
err
3ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "translate",
  "name": "WallShift",
  "parent_part_id": "1",
  "params": {
    "offset": {
      "x": 0,
      "y": 0,
      "z": 0
    }
  }
}
17
create
err
4ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "difference",
  "name": "Hole1",
  "parent_part_id": "1",
  "params": {
    "tool": {
      "type": "Translate",
      "offset": {
        "x": 10,
        "y": 15,
        "z": -1
      },
      "child": {
        "type": "Cylinder",
        "radius": 2.5,
        "height": 6
      }
    }
  }
}
18
create
err
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "shell",
  "name": "test",
  "parent_part_id": "1",
  "params": {
    "thickness": 1
  }
}
19
read
ok
1ms
args
{
  "document_id": "doc_1781215542952_1"
}
20
create
err
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cylinder",
  "name": "Hole1Tool",
  "params": {
    "radius": 2.5,
    "height": 6
  },
  "position": {
    "x": 10,
    "y": 15,
    "z": -1
  }
}
21
create
ok
3ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cylinder",
  "name": "Hole1Tool",
  "params": {
    "radius": 2.5,
    "height": 6,
    "segments": 64
  },
  "position": {
    "x": 10,
    "y": 15,
    "z": -1
  }
}
22
create
err
3ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "difference",
  "name": "CutHole1",
  "parent_part_id": "1",
  "params": {
    "right": 2
  }
}
23
create
ok
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "difference",
  "name": "CutHole1",
  "parent_part_id": "1",
  "params": {
    "left": 1,
    "right": 2
  }
}
24
read
ok
2ms
args
{
  "document_id": "doc_1781215542952_1"
}
25
read
ok
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "3"
}
26
get_document
ok
2ms
args
{
  "document_id": "doc_1781215542952_1"
}
27
delete
ok
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "1"
}
28
delete
ok
1ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "2"
}
29
get_document
ok
2ms
args
{
  "document_id": "doc_1781215542952_1"
}
30
delete
ok
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "part_id": "3"
}
31
get_document
ok
1ms
args
{
  "document_id": "doc_1781215542952_1"
}
32
create
ok
3ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cube",
  "name": "Base",
  "params": {
    "size": {
      "x": 50,
      "y": 30,
      "z": 4
    }
  }
}
33
create
ok
1ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cube",
  "name": "WallRaw",
  "params": {
    "size": {
      "x": 4,
      "y": 30,
      "z": 26
    }
  }
}
34
create
ok
1ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "cylinder",
  "name": "HoleCyl",
  "params": {
    "radius": 2.5,
    "height": 6,
    "segments": 64
  }
}
35
create
ok
3ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "translate",
  "name": "WallPos",
  "parent_part_id": "2",
  "params": {
    "child": 2,
    "offset": {
      "x": 46,
      "y": 0,
      "z": 4
    }
  }
}
36
create
ok
2ms
args
{
  "document_id": "doc_1781215542952_1",
  "type": "translate",
  "name": "Hole1Pos",
  "parent_part_id": "3",
  "params": {
    "child": 3,
    "offset": {
      "x": 10,
      "y": 15,
      "z": -1
    }
  }
}
37
get_document
ok
1ms
args
{
  "document_id": "doc_1781215542952_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T220542Z-fdb0.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "Base",
      "op": {
        "type": "Cube",
        "size": {
          "x": 50,
          "y": 30,
          "z": 4
        }
      }
    },
    "2": {
      "id": 2,
      "name": "WallRaw",
      "op": {
        "type": "Cube",
        "size": {
          "x": 4,
          "y": 30,
          "z": 26
        }
      }
    },
    "3": {
      "id": 3,
      "name": "HoleCyl",
      "op": {
        "type": "Cylinder",
        "radius": 2.5,
        "height": 6,
        "segments": 64
      }
    },
    "4": {
      "id": 4,
      "name": "WallPos",
      "op": {
        "type": "Translate",
        "child": 2,
        "offset": {
          "x": 46,
          "y": 0,
          "z": 4
        }
      }
    },
    "5": {
      "id": 5,
      "name": "Hole1Pos",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": 10,
          "y": 15,
          "z": -1
        }
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 1,
      "material": "default"
    },
    {
      "root": 2,
      "material": "default"
    },
    {
      "root": 3,
      "material": "default"
    },
    {
      "root": 4,
      "material": "default"
    },
    {
      "root": 5,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:55.628Z · static site, regenerate with npm run build -w @mecheval/leaderboard