← mecheval / run / a4-stepped-pyramid-with-holes-01 / claude-mcp-claude-opus-4-7 / 20260611T223136Z-b182

run 20260611T223136Z-b182

a4-stepped-pyramid-with-holes-01 · claude-mcp-claude-opus-4-7

Summary

statusfail
score0.33 (2/6)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-11T22:31:36.909Z
ended2026-06-11T22:33:37.004Z
tokens619,952 in · 6,879 out · 626,831 total
wallclock120.1s
tool calls41
task hash88075d4c0f433c11…
vcad hash578943e260b20990…

Prompt

Make a stepped pyramid composed of three concentric square layers stacked along Z, fused into a single solid. Base layer: 80mm × 80mm × 10mm, centered in X and Y, bottom face on the XY plane (z = 0 to z = 10). Middle layer: 60mm × 60mm × 10mm, centered, sitting on top of the base layer (z = 10 to z = 20). Top layer: 40mm × 40mm × 10mm, centered, sitting on top of the middle layer (z = 20 to z = 30). The base layer has four bolt holes of diameter 6mm, axes parallel to Z, drilled through the full 10mm thickness of the base only (z = 0 to z = 10), located at (30, 30), (-30, 30), (-30, -30), (30, -30). Output a single solid.

Checks

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

details: {
  "root_count": 4,
  "solids_produced": 4
}
1
bbox
fail
Z off by -18.00mm
params + details 
params: {
  "type": "bbox",
  "min": [
    -40,
    -40,
    0
  ],
  "max": [
    40,
    40,
    30
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    40,
    40,
    12
  ],
  "actual_min": [
    -40,
    -40,
    -1
  ],
  "deviation_max": [
    0,
    0,
    -18
  ],
  "deviation_min": [
    0,
    0,
    -1
  ],
  "max_abs_deviation_mm": 18,
  "tolerance_mm": 0.1
}
2
mass_props
fail
volume off by 11.3%
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 114869.03,
  "tolerance_pct": 0.5
}

details: {
  "volume": {
    "actual_mm3": 127830.62647540602,
    "deviation_pct": 11.28380423810145,
    "pass": false,
    "spec_mm3": 114869.03,
    "tolerance_pct": 0.5
  }
}
3
hole_count
fail
found 2/4 holes of ⌀6mm
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 6,
  "expected": 4,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 2,
  "diameter_mm": 6,
  "diameter_tolerance_mm": 0.05,
  "expected": 4,
  "found": [
    [
      30,
      30,
      6
    ],
    [
      -30,
      30,
      6
    ]
  ]
}
4
hole_positions
fail
2/4 mispositioned
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 6,
  "positions": [
    [
      30,
      30,
      0
    ],
    [
      -30,
      30,
      0
    ],
    [
      -30,
      -30,
      0
    ],
    [
      30,
      -30,
      0
    ]
  ],
  "tolerance_mm": 0.15
}

details: {
  "diameter_mm": 6,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        30,
        30
      ],
      "pass": true,
      "spec_xy": [
        30,
        30
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        -30,
        30
      ],
      "pass": true,
      "spec_xy": [
        -30,
        30
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -30,
        -30
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        30,
        -30
      ]
    }
  ],
  "tolerance_mm": 0.15,
  "unmatched_extras": []
}
5
step_roundtrip
pass
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 0.5
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          40,
          10
        ],
        "original_min": [
          -40,
          -40,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          40,
          10
        ],
        "roundtripped_min": [
          -40,
          -40,
          0
        ],
        "tolerance_mm": 0.5678908345800274
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0.0014222202173922453,
        "original_mm3": 63717.710684725454,
        "pass": true,
        "roundtripped_mm3": 63718.61689088887
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          3,
          3,
          12
        ],
        "original_min": [
          -3,
          -3,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          3,
          3,
          12
        ],
        "roundtripped_min": [
          -3,
          -3,
          0
        ],
        "tolerance_mm": 0.07348469228349534
      },
      "index": 1,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815287441195381,
        "original_mm3": 338.7472429003483,
        "pass": true,
        "roundtripped_mm3": 337.1160775558707
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          -27,
          33,
          11
        ],
        "original_min": [
          -33,
          27,
          -1
        ],
        "pass": true,
        "roundtripped_max": [
          -27,
          33,
          11
        ],
        "roundtripped_min": [
          -33,
          27,
          -1
        ],
        "tolerance_mm": 0.07348469228349534
      },
      "index": 2,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815305331390859,
        "original_mm3": 338.74717832927126,
        "pass": true,
        "roundtripped_mm3": 337.1160072354687
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          40,
          10
        ],
        "original_min": [
          -40,
          -40,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          40,
          10
        ],
        "roundtripped_min": [
          -40,
          -40,
          0
        ],
        "tolerance_mm": 0.5678908345800274
      },
      "index": 3,
      "pass": true,
      "volume": {
        "deviation_pct": 0.0028570982702774725,
        "original_mm3": 63435.42136945096,
        "pass": true,
        "roundtripped_mm3": 63437.23378177765
      }
    }
  ],
  "tolerance_pct": 0.5
}

Tool calls

0
open_document
ok
1ms
args
{}
1
create
err
6ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "union",
  "name": "Stepped Pyramid",
  "params": {
    "children": [
      {
        "type": "difference",
        "params": {
          "children": [
            {
              "type": "translate",
              "params": {
                "x": -40,
                "y": -40,
                "z": 0,
                "child": {
                  "type": "cube",
                  "params": {
                    "x": 80,
                    "y": 80,
                    "z": 10
                  }
                }
              }
            },
            {
              "type": "translate",
              "params": {
                "x": 30,
                "y": 30,
                "z": -1,
                "child": {
                  "type": "cylinder",
                  "params": {
                    "r": 3,
                    "h": 12
                  }
                }
              }
            },
            {
              "type": "translate",
              "params": {
                "x": -30,
                "y": 30,
                "z": -1,
                "child": {
                  "type": "cylinder",
                  "params": {
                    "r": 3,
                    "h": 12
                  }
                }
              }
            },
            {
              "type": "translate",
              "params": {
                "x": -30,
                "y": -30,
                "z": -1,
                "child": {
                  "type": "cylinder",
                  "params": {
                    "r": 3,
                    "h": 12
                  }
                }
              }
            },
            {
              "type": "translate",
              "params": {
                "x": 30,
                "y": -30,
                "z": -1,
                "child": {
                  "type": "cylinder",
                  "params": {
                    "r": 3,
                    "h": 12
                  }
                }
              }
            }
          ]
        }
      },
      {
        "type": "translate",
        "params": {
          "x": -30,
          "y": -30,
          "z": 10,
          "child": {
            "type": "cube",
            "params": {
              "x": 60,
              "y": 60,
              "z": 10
            }
          }
        }
      },
      {
        "type": "translate",
        "params": {
          "x": -20,
          "y": -20,
          "z": 20,
          "child": {
            "type": "cube",
            "params": {
              "x": 40,
              "y": 40,
              "z": 10
            }
          }
        }
      }
    ]
  }
}
2
create_cad_loon
ok
17ms
args
{
  "source": "[let\n  base [translate -40 -40 0 [cube 80 80 10]]\n  mid  [translate -30 -30 10 [cube 60 60 10]]\n  top  [translate -20 -20 20 [cube 40 40 10]]\n  h1 [translate 30 30 -1 [cylinder 3 12]]\n  h2 [translate -30 30 -1 [cylinder 3 12]]\n  h3 [translate -30 -30 -1 [cylinder 3 12]]\n  h4 [translate 30 -30 -1 [cylinder 3 12]]\n  drilled [difference h1 [difference h2 [difference h3 [difference h4 base]]]]\n  [root [union top [union mid drilled]] \"steel\"]]",
  "format": "json"
}
3
create
ok
4ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "cube",
  "name": "base_cube",
  "params": {
    "size": {
      "x": 80,
      "y": 80,
      "z": 10
    }
  }
}
4
read
ok
4ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "1"
}
5
delete
ok
4ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "1"
}
6
create
err
6ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "union",
  "name": "Stepped Pyramid",
  "params": {
    "left": {
      "type": "union",
      "params": {
        "left": {
          "type": "difference",
          "params": {
            "left": {
              "type": "translate",
              "params": {
                "offset": {
                  "x": -40,
                  "y": -40,
                  "z": 0
                },
                "child": {
                  "type": "cube",
                  "params": {
                    "size": {
                      "x": 80,
                      "y": 80,
                      "z": 10
                    }
                  }
                }
              }
            },
            "right": {
              "type": "union",
              "params": {
                "left": {
                  "type": "union",
                  "params": {
                    "left": {
                      "type": "translate",
                      "params": {
                        "offset": {
                          "x": 30,
                          "y": 30,
                          "z": -1
                        },
                        "child": {
                          "type": "cylinder",
                          "params": {
                            "radius": 3,
                            "height": 12
                          }
                        }
                      }
                    },
                    "right": {
                      "type": "translate",
                      "params": {
                        "offset": {
                          "x": -30,
                          "y": 30,
                          "z": -1
                        },
                        "child": {
                          "type": "cylinder",
                          "params": {
                            "radius": 3,
                            "height": 12
                          }
                        }
                      }
                    }
                  }
                },
                "right": {
                  "type": "union",
                  "params": {
                    "left": {
                      "type": "translate",
                      "params": {
                        "offset": {
                          "x": -30,
                          "y": -30,
                          "z": -1
                        },
                        "child": {
                          "type": "cylinder",
                          "params": {
                            "radius": 3,
                            "height": 12
                          }
                        }
                      }
                    },
                    "right": {
                      "type": "translate",
                      "params": {
                        "offset": {
                          "x": 30,
                          "y": -30,
                          "z": -1
                        },
                        "child": {
                          "type": "cylinder",
                          "params": {
                            "radius": 3,
                            "height": 12
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        },
        "right": {
          "type": "translate",
          "params": {
            "offset": {
              "x": -30,
              "y": -30,
              "z": 10
            },
            "child": {
              "type": "cube",
              "params": {
                "size": {
                  "x": 60,
                  "y": 60,
                  "z": 10
                }
              }
            }
          }
        }
      }
    },
    "right": {
      "type": "translate",
      "params": {
        "offset": {
          "x": -20,
          "y": -20,
          "z": 20
        },
        "child": {
          "type": "cube",
          "params": {
            "size": {
              "x": 40,
              "y": 40,
              "z": 10
            }
          }
        }
      }
    }
  }
}
7
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 80,
      "y": 80,
      "z": 10
    }
  }
}
8
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 60,
      "y": 60,
      "z": 10
    }
  }
}
9
create
ok
1ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "cube",
  "params": {
    "size": {
      "x": 40,
      "y": 40,
      "z": 10
    }
  }
}
10
create
err
1ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 12
  }
}
11
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 12,
    "segments": 64
  }
}
12
read
ok
2ms
args
{
  "document_id": "doc_1781217097080_1"
}
13
create
err
4ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "translate",
  "parent_part_id": "1",
  "params": {
    "offset": {
      "x": -40,
      "y": -40,
      "z": 0
    }
  }
}
14
create
ok
2ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "translate",
  "parent_part_id": "1",
  "params": {
    "offset": {
      "x": -40,
      "y": -40,
      "z": 0
    },
    "child": 1
  }
}
15
read
ok
3ms
args
{
  "document_id": "doc_1781217097080_1"
}
16
read
ok
4ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "5"
}
17
delete
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "1"
}
18
delete
ok
2ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "2"
}
19
delete
ok
1ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "3"
}
20
delete
ok
1ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "4"
}
21
delete
ok
1ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "5"
}
22
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "cube",
  "name": "base",
  "params": {
    "size": {
      "x": 80,
      "y": 80,
      "z": 10
    }
  }
}
23
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "translate",
  "parent_part_id": "1",
  "params": {
    "offset": {
      "x": -40,
      "y": -40,
      "z": 0
    },
    "child": 1
  }
}
24
read
ok
2ms
args
{
  "document_id": "doc_1781217097080_1"
}
25
delete
ok
2ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "1"
}
26
read
ok
1ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "2"
}
27
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 12,
    "segments": 64
  }
}
28
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "translate",
  "parent_part_id": "3",
  "params": {
    "offset": {
      "x": 30,
      "y": 30,
      "z": -1
    },
    "child": 3
  }
}
29
delete
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "3"
}
30
create
err
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "difference",
  "parent_part_id": "2",
  "params": {
    "tool_part_id": "4"
  }
}
31
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "difference",
  "parent_part_id": "2",
  "params": {
    "left": 2,
    "right": 4
  }
}
32
read
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "5"
}
33
read
ok
2ms
args
{
  "document_id": "doc_1781217097080_1"
}
34
delete
ok
2ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "2"
}
35
delete
ok
1ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "4"
}
36
read
ok
2ms
args
{
  "document_id": "doc_1781217097080_1",
  "part_id": "5"
}
37
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "cylinder",
  "params": {
    "radius": 3,
    "height": 12,
    "segments": 64
  }
}
38
create
ok
3ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "translate",
  "parent_part_id": "6",
  "params": {
    "offset": {
      "x": -30,
      "y": 30,
      "z": -1
    },
    "child": 6
  }
}
39
create
ok
4ms
args
{
  "document_id": "doc_1781217097080_1",
  "type": "difference",
  "parent_part_id": "5",
  "params": {
    "left": 5,
    "right": 7
  }
}
40
get_document
ok
1ms
args
{
  "document_id": "doc_1781217097080_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T223136Z-b182.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "base",
      "op": {
        "type": "Cube",
        "size": {
          "x": 80,
          "y": 80,
          "z": 10
        }
      }
    },
    "2": {
      "id": 2,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -40,
          "y": -40,
          "z": 0
        }
      }
    },
    "3": {
      "id": 3,
      "name": null,
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 12,
        "segments": 64
      }
    },
    "4": {
      "id": 4,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": 30,
          "y": 30,
          "z": -1
        }
      }
    },
    "5": {
      "id": 5,
      "name": null,
      "op": {
        "type": "Difference",
        "left": 2,
        "right": 4
      }
    },
    "6": {
      "id": 6,
      "name": null,
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mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:56.167Z · static site, regenerate with npm run build -w @mecheval/leaderboard