[
  {
    "name": "create_sketch",
    "description": "Start a new sketch on an origin plane or on a face of the body.",
    "parameters": {
      "type": "object",
      "properties": {
        "plane": {
          "type": "string",
          "enum": [
            "xy",
            "xz",
            "yz"
          ],
          "default": "xy",
          "description": "origin plane: XY (top plane), XZ (front plane), YZ (right plane)"
        },
        "face": {
          "type": "string",
          "enum": [
            "top",
            "bottom",
            "front",
            "back",
            "left",
            "right"
          ],
          "description": "body face to sketch on instead of a plane"
        },
        "offset": {
          "type": "number",
          "description": "offset from the plane in mm"
        }
      },
      "required": []
    }
  },
  {
    "name": "draw_rectangle",
    "description": "Draw a rectangle in the active sketch, centred on a point.",
    "parameters": {
      "type": "object",
      "properties": {
        "width": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "size along X in mm, the first number of 40x30"
        },
        "height": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "size along Y in mm, the second number of 40x30"
        },
        "center_x": {
          "type": "number",
          "default": 0,
          "description": "centre X in mm"
        },
        "center_y": {
          "type": "number",
          "default": 0,
          "description": "centre Y in mm"
        }
      },
      "required": [
        "width",
        "height"
      ]
    }
  },
  {
    "name": "draw_circle",
    "description": "Draw a circle in the active sketch.",
    "parameters": {
      "type": "object",
      "properties": {
        "diameter": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "diameter in mm, the number after Ø or 'dia'"
        },
        "center_x": {
          "type": "number",
          "default": 0,
          "description": "centre X in mm"
        },
        "center_y": {
          "type": "number",
          "default": 0,
          "description": "centre Y in mm"
        }
      },
      "required": [
        "diameter"
      ]
    }
  },
  {
    "name": "draw_line",
    "description": "Draw a straight line in the active sketch between two points.",
    "parameters": {
      "type": "object",
      "properties": {
        "start_x": {
          "type": "number",
          "description": "start X in mm, the point after 'from'"
        },
        "start_y": {
          "type": "number",
          "description": "start Y in mm, the point after 'from'"
        },
        "end_x": {
          "type": "number",
          "description": "end X in mm, the point after 'to'"
        },
        "end_y": {
          "type": "number",
          "description": "end Y in mm, the point after 'to'"
        }
      },
      "required": [
        "start_x",
        "start_y",
        "end_x",
        "end_y"
      ]
    }
  },
  {
    "name": "draw_slot",
    "description": "Draw a straight slot (obround) in the active sketch; 20x6 = length 20, width 6.",
    "parameters": {
      "type": "object",
      "properties": {
        "length": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "centre-to-centre length in mm"
        },
        "width": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "slot width in mm"
        },
        "center_x": {
          "type": "number",
          "default": 0,
          "description": "centre X in mm"
        },
        "center_y": {
          "type": "number",
          "default": 0,
          "description": "centre Y in mm"
        },
        "angle": {
          "type": "number",
          "default": 0,
          "description": "rotation in degrees"
        }
      },
      "required": [
        "length",
        "width"
      ]
    }
  },
  {
    "name": "add_dimension",
    "description": "Add a driving dimension to entities of the active sketch.",
    "parameters": {
      "type": "object",
      "properties": {
        "kind": {
          "type": "string",
          "enum": [
            "distance",
            "horizontal",
            "vertical",
            "diameter",
            "radius",
            "angle"
          ],
          "description": "type of dimension"
        },
        "value": {
          "type": "number",
          "description": "dimension value in mm, or degrees for angle"
        },
        "entity_one": {
          "type": "integer",
          "minimum": 1,
          "description": "first entity number, e.g. the 2 of line 2"
        },
        "entity_two": {
          "type": "integer",
          "minimum": 1,
          "description": "second entity number"
        }
      },
      "required": [
        "kind",
        "value"
      ]
    }
  },
  {
    "name": "add_constraint",
    "description": "Add a geometric constraint between entities of the active sketch.",
    "parameters": {
      "type": "object",
      "properties": {
        "kind": {
          "type": "string",
          "enum": [
            "horizontal",
            "vertical",
            "parallel",
            "perpendicular",
            "tangent",
            "equal",
            "coincident",
            "concentric",
            "midpoint",
            "symmetric",
            "fix"
          ],
          "description": "type of constraint"
        },
        "entity_one": {
          "type": "integer",
          "minimum": 1,
          "description": "first entity number, e.g. the 2 of line 2"
        },
        "entity_two": {
          "type": "integer",
          "minimum": 1,
          "description": "second entity number"
        }
      },
      "required": [
        "kind"
      ]
    }
  },
  {
    "name": "extrude",
    "description": "Extrude (pad) the active sketch profile into a solid, or cut it out of the body (pocket).",
    "parameters": {
      "type": "object",
      "properties": {
        "distance": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "distance in mm: thickness, height or depth"
        },
        "operation": {
          "type": "string",
          "enum": [
            "new_body",
            "join",
            "cut",
            "intersect"
          ],
          "default": "new_body",
          "description": "join adds material (boss), cut removes it (pocket)"
        },
        "direction": {
          "type": "string",
          "enum": [
            "positive",
            "negative",
            "symmetric"
          ],
          "default": "positive",
          "description": "side of the sketch plane; symmetric = both sides"
        },
        "extent": {
          "type": "string",
          "enum": [
            "distance",
            "through_all"
          ],
          "default": "distance",
          "description": "through_all = through everything"
        }
      },
      "required": []
    }
  },
  {
    "name": "create_hole",
    "description": "Drill a hole into a face of the body.",
    "parameters": {
      "type": "object",
      "properties": {
        "diameter": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "hole diameter in mm, the number after Ø or 'dia'"
        },
        "x": {
          "type": "number",
          "default": 0,
          "description": "centre X in mm"
        },
        "y": {
          "type": "number",
          "default": 0,
          "description": "centre Y in mm"
        },
        "depth": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "depth in mm of a blind hole; omit for a through hole"
        },
        "face": {
          "type": "string",
          "enum": [
            "top",
            "bottom",
            "front",
            "back",
            "left",
            "right"
          ],
          "default": "top",
          "description": "face to drill into"
        }
      },
      "required": [
        "diameter"
      ]
    }
  },
  {
    "name": "circular_pattern",
    "description": "Repeat a feature or body around an axis (polar pattern, circular array).",
    "parameters": {
      "type": "object",
      "properties": {
        "count": {
          "type": "integer",
          "minimum": 2,
          "description": "total number of instances, the number after x or ×"
        },
        "axis": {
          "type": "string",
          "enum": [
            "x",
            "y",
            "z"
          ],
          "default": "z",
          "description": "axis to rotate around"
        },
        "angle": {
          "type": "number",
          "default": 360,
          "description": "total angle in degrees"
        },
        "target": {
          "type": "string",
          "enum": [
            "last_feature",
            "body"
          ],
          "default": "last_feature",
          "description": "what to repeat"
        }
      },
      "required": [
        "count"
      ]
    }
  },
  {
    "name": "rectangular_pattern",
    "description": "Repeat a feature or body in a row or grid along X and Y (linear pattern).",
    "parameters": {
      "type": "object",
      "properties": {
        "x_count": {
          "type": "integer",
          "minimum": 1,
          "description": "instances along X"
        },
        "x_spacing": {
          "type": "number",
          "description": "spacing along X in mm"
        },
        "y_count": {
          "type": "integer",
          "minimum": 1,
          "default": 1,
          "description": "instances along Y"
        },
        "y_spacing": {
          "type": "number",
          "description": "spacing along Y in mm"
        },
        "target": {
          "type": "string",
          "enum": [
            "last_feature",
            "body"
          ],
          "default": "last_feature",
          "description": "what to repeat"
        }
      },
      "required": [
        "x_count",
        "x_spacing"
      ]
    }
  },
  {
    "name": "mirror",
    "description": "Mirror a feature or body across an origin plane.",
    "parameters": {
      "type": "object",
      "properties": {
        "plane": {
          "type": "string",
          "enum": [
            "xy",
            "xz",
            "yz"
          ],
          "description": "mirror plane"
        },
        "target": {
          "type": "string",
          "enum": [
            "last_feature",
            "body"
          ],
          "default": "last_feature",
          "description": "what to mirror"
        }
      },
      "required": [
        "plane"
      ]
    }
  },
  {
    "name": "fillet",
    "description": "Round edges of the body with a radius.",
    "parameters": {
      "type": "object",
      "properties": {
        "radius": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "fillet radius in mm, the number after R"
        },
        "edges": {
          "type": "string",
          "enum": [
            "all",
            "top",
            "bottom",
            "vertical"
          ],
          "default": "all",
          "description": "which edges of the body"
        }
      },
      "required": [
        "radius"
      ]
    }
  },
  {
    "name": "chamfer",
    "description": "Bevel edges of the body with an equal-distance chamfer.",
    "parameters": {
      "type": "object",
      "properties": {
        "distance": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "chamfer distance in mm"
        },
        "edges": {
          "type": "string",
          "enum": [
            "all",
            "top",
            "bottom",
            "vertical"
          ],
          "default": "all",
          "description": "which edges of the body"
        }
      },
      "required": [
        "distance"
      ]
    }
  },
  {
    "name": "shell",
    "description": "Hollow out the body, leaving walls of a given thickness and one face open.",
    "parameters": {
      "type": "object",
      "properties": {
        "thickness": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "wall thickness in mm"
        },
        "open_face": {
          "type": "string",
          "enum": [
            "top",
            "bottom",
            "front",
            "back",
            "left",
            "right"
          ],
          "default": "top",
          "description": "face to remove"
        }
      },
      "required": [
        "thickness"
      ]
    }
  },
  {
    "name": "undo",
    "description": "Undo the most recent operation.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "redo",
    "description": "Redo the most recently undone operation.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "draw_polygon",
    "description": "Draw a regular polygon such as a hexagon in the active sketch.",
    "parameters": {
      "type": "object",
      "properties": {
        "shape": {
          "type": "string",
          "enum": [
            "triangle",
            "pentagon",
            "hexagon",
            "octagon"
          ],
          "description": "which polygon"
        },
        "size": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "size in mm"
        },
        "measure": {
          "type": "string",
          "enum": [
            "flats",
            "corners",
            "side"
          ],
          "default": "flats",
          "description": "size is across flats, across corners or one side"
        },
        "center_x": {
          "type": "number",
          "default": 0,
          "description": "centre X in mm"
        },
        "center_y": {
          "type": "number",
          "default": 0,
          "description": "centre Y in mm"
        },
        "angle": {
          "type": "number",
          "default": 0,
          "description": "rotation in degrees"
        }
      },
      "required": [
        "shape",
        "size"
      ]
    }
  },
  {
    "name": "draw_arc",
    "description": "Draw a circular arc in the active sketch, counter-clockwise from a start to an end angle.",
    "parameters": {
      "type": "object",
      "properties": {
        "radius": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "radius in mm, the number after R"
        },
        "start_angle": {
          "type": "number",
          "default": 0,
          "description": "start angle in degrees"
        },
        "end_angle": {
          "type": "number",
          "default": 180,
          "description": "end angle in degrees"
        },
        "center_x": {
          "type": "number",
          "default": 0,
          "description": "centre X in mm"
        },
        "center_y": {
          "type": "number",
          "default": 0,
          "description": "centre Y in mm"
        }
      },
      "required": [
        "radius"
      ]
    }
  },
  {
    "name": "revolve",
    "description": "Revolve the active sketch profile around an origin axis into a solid (turned part).",
    "parameters": {
      "type": "object",
      "properties": {
        "axis": {
          "type": "string",
          "enum": [
            "x",
            "y",
            "z"
          ],
          "description": "axis to revolve around"
        },
        "angle": {
          "type": "number",
          "exclusiveMinimum": 0,
          "maximum": 360,
          "default": 360,
          "description": "angle in degrees"
        },
        "operation": {
          "type": "string",
          "enum": [
            "new_body",
            "join",
            "cut",
            "intersect"
          ],
          "default": "new_body",
          "description": "join adds material, cut removes it"
        }
      },
      "required": [
        "axis"
      ]
    }
  },
  {
    "name": "combine",
    "description": "Boolean of bodies: join the other bodies to the first body, subtract them from it, or keep the overlap.",
    "parameters": {
      "type": "object",
      "properties": {
        "operation": {
          "type": "string",
          "enum": [
            "join",
            "cut",
            "intersect"
          ],
          "default": "join",
          "description": "join merges, cut subtracts, intersect keeps the overlap"
        }
      },
      "required": []
    }
  },
  {
    "name": "move_body",
    "description": "Move the body by a distance along X, Y and Z.",
    "parameters": {
      "type": "object",
      "properties": {
        "x": {
          "type": "number",
          "minimum": -10000,
          "maximum": 10000,
          "default": 0,
          "description": "distance along X in mm"
        },
        "y": {
          "type": "number",
          "minimum": -10000,
          "maximum": 10000,
          "default": 0,
          "description": "distance along Y in mm"
        },
        "z": {
          "type": "number",
          "minimum": -10000,
          "maximum": 10000,
          "default": 0,
          "description": "distance along Z (up) in mm"
        }
      },
      "required": []
    }
  },
  {
    "name": "set_material",
    "description": "Assign a physical material to the body.",
    "parameters": {
      "type": "object",
      "properties": {
        "material": {
          "type": "string",
          "enum": [
            "steel",
            "stainless_steel",
            "aluminum",
            "brass",
            "copper",
            "titanium",
            "abs",
            "nylon"
          ],
          "description": "material named in the request"
        }
      },
      "required": [
        "material"
      ]
    }
  },
  {
    "name": "set_parameter",
    "description": "Create a named user parameter or change its value.",
    "parameters": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string",
          "pattern": "^[A-Za-z_][A-Za-z0-9_]{0,31}$",
          "maxLength": 32,
          "description": "parameter name exactly as written, e.g. wall_t"
        },
        "value": {
          "type": "number",
          "minimum": -100000,
          "maximum": 100000,
          "description": "the number after = or 'to'"
        },
        "unit": {
          "type": "string",
          "enum": [
            "mm",
            "cm",
            "inch",
            "deg",
            "none"
          ],
          "default": "mm",
          "description": "unit of the value; none for a plain count"
        }
      },
      "required": [
        "name",
        "value"
      ]
    }
  },
  {
    "name": "list_parameters",
    "description": "List the user parameters with their values.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "measure_body",
    "description": "Report the size (bounding box), volume and mass of each body.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "check_timeline",
    "description": "Check the timeline for features with errors or warnings.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "capture_view",
    "description": "Take a screenshot of the model, optionally from a standard view direction.",
    "parameters": {
      "type": "object",
      "properties": {
        "direction": {
          "type": "string",
          "enum": [
            "current",
            "front",
            "back",
            "bottom",
            "top",
            "left",
            "right",
            "iso-bottom-left",
            "iso-bottom-right",
            "iso-top-left",
            "iso-top-right"
          ],
          "default": "current",
          "description": "view to capture from; iso = isometric corner"
        }
      },
      "required": []
    }
  },
  {
    "name": "fit_view",
    "description": "Zoom the view so the whole model fits the window.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "export_model",
    "description": "Export the design to a file in a named format.",
    "parameters": {
      "type": "object",
      "properties": {
        "format": {
          "type": "string",
          "enum": [
            "step",
            "stl",
            "3mf",
            "iges",
            "f3d"
          ],
          "description": "file format named in the request"
        },
        "name": {
          "type": "string",
          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]{0,39}$",
          "maxLength": 40,
          "description": "file name without extension, exactly as written"
        }
      },
      "required": [
        "format"
      ]
    }
  },
  {
    "name": "new_document",
    "description": "Create a new empty design document.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "save_document",
    "description": "Save the active document.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "open_document",
    "description": "Find a saved document by name and open it.",
    "parameters": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string",
          "pattern": "^[A-Za-z0-9][A-Za-z0-9 _.-]{0,39}$",
          "maxLength": 40,
          "description": "document name or part of it, exactly as written"
        }
      },
      "required": [
        "name"
      ]
    }
  },
  {
    "name": "create_box",
    "description": "Create a box (block, cube) in one step, centred on the origin.",
    "parameters": {
      "type": "object",
      "properties": {
        "width": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "size along X in mm, the first number of 40x30x10"
        },
        "depth": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "size along Y in mm, the second number"
        },
        "height": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "size along Z (up) in mm, the third number"
        }
      },
      "required": [
        "width",
        "depth",
        "height"
      ]
    }
  },
  {
    "name": "create_cylinder",
    "description": "Create a cylinder (rod, disc) in one step, standing on the origin.",
    "parameters": {
      "type": "object",
      "properties": {
        "diameter": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "diameter in mm, the number after Ø or 'dia'"
        },
        "height": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "height or length in mm"
        }
      },
      "required": [
        "diameter",
        "height"
      ]
    }
  },
  {
    "name": "center_hole",
    "description": "Drill a hole at the centre (middle) of a face of the body.",
    "parameters": {
      "type": "object",
      "properties": {
        "diameter": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "hole diameter in mm, the number after Ø or 'dia'"
        },
        "depth": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "depth in mm of a blind hole; omit for a through hole"
        },
        "face": {
          "type": "string",
          "enum": [
            "top",
            "bottom",
            "front",
            "back",
            "left",
            "right"
          ],
          "default": "top",
          "description": "face to drill into"
        }
      },
      "required": [
        "diameter"
      ]
    }
  },
  {
    "name": "corner_holes",
    "description": "Drill a hole near each corner of a face of the body.",
    "parameters": {
      "type": "object",
      "properties": {
        "diameter": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "hole diameter in mm"
        },
        "margin": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "inset in mm from the edges"
        },
        "depth": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "depth in mm; omit for through holes"
        },
        "face": {
          "type": "string",
          "enum": [
            "top",
            "bottom",
            "front",
            "back",
            "left",
            "right"
          ],
          "default": "top",
          "description": "face to drill into"
        }
      },
      "required": [
        "diameter",
        "margin"
      ]
    }
  },
  {
    "name": "bolt_hole",
    "description": "Drill a clearance hole for a metric screw such as M6.",
    "parameters": {
      "type": "object",
      "properties": {
        "size": {
          "type": "string",
          "enum": [
            "M3",
            "M4",
            "M5",
            "M6",
            "M8",
            "M10",
            "M12"
          ],
          "description": "screw size"
        },
        "style": {
          "type": "string",
          "enum": [
            "clearance",
            "counterbore",
            "countersink"
          ],
          "default": "clearance",
          "description": "recess for the screw head"
        },
        "x": {
          "type": "number",
          "default": 0,
          "description": "centre X in mm"
        },
        "y": {
          "type": "number",
          "default": 0,
          "description": "centre Y in mm"
        }
      },
      "required": [
        "size"
      ]
    }
  },
  {
    "name": "split_body",
    "description": "Split the body into two bodies at its middle (cut it in half).",
    "parameters": {
      "type": "object",
      "properties": {
        "direction": {
          "type": "string",
          "enum": [
            "vertical",
            "horizontal",
            "lengthwise"
          ],
          "default": "vertical",
          "description": "horizontal = top and bottom halves; vertical = across the longest side; lengthwise = along it"
        },
        "offset": {
          "type": "number",
          "description": "distance in mm of the cut from the middle"
        }
      },
      "required": []
    }
  },
  {
    "name": "copy_body",
    "description": "Duplicate the body: make copies of it in a row.",
    "parameters": {
      "type": "object",
      "properties": {
        "count": {
          "type": "integer",
          "minimum": 1,
          "maximum": 100,
          "default": 1,
          "description": "number of copies, the number before 'times' or 'copies'"
        },
        "spacing": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "distance in mm from one copy to the next; omit for side by side"
        },
        "axis": {
          "type": "string",
          "enum": [
            "x",
            "y",
            "z"
          ],
          "default": "x",
          "description": "direction of the row"
        }
      },
      "required": []
    }
  },
  {
    "name": "set_thickness",
    "description": "Change the thickness (height) of the existing body by editing its extrude.",
    "parameters": {
      "type": "object",
      "properties": {
        "thickness": {
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "new thickness or height in mm"
        }
      },
      "required": [
        "thickness"
      ]
    }
  },
  {
    "name": "scale_body",
    "description": "Scale the body uniformly by a factor (resize, make bigger or smaller).",
    "parameters": {
      "type": "object",
      "properties": {
        "factor": {
          "type": "number",
          "exclusiveMinimum": 0,
          "maximum": 1000,
          "description": "scale factor as written: 2 doubles, 0.5 halves"
        }
      },
      "required": [
        "factor"
      ]
    }
  },
  {
    "name": "rotate_body",
    "description": "Rotate the body in place by an angle around an axis.",
    "parameters": {
      "type": "object",
      "properties": {
        "angle": {
          "type": "number",
          "minimum": -360,
          "maximum": 360,
          "description": "angle in degrees"
        },
        "axis": {
          "type": "string",
          "enum": [
            "x",
            "y",
            "z"
          ],
          "default": "z",
          "description": "axis to rotate around; z is upright"
        }
      },
      "required": [
        "angle"
      ]
    }
  },
  {
    "name": "delete_body",
    "description": "Delete the body from the design.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "hide_body",
    "description": "Hide the body (make it invisible) without deleting it.",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "show_body",
    "description": "Show hidden bodies again (unhide).",
    "parameters": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "set_color",
    "description": "Give the body a colour (appearance).",
    "parameters": {
      "type": "object",
      "properties": {
        "color": {
          "type": "string",
          "enum": [
            "red",
            "orange",
            "yellow",
            "green",
            "blue",
            "purple",
            "pink",
            "brown",
            "black",
            "white",
            "gray"
          ],
          "description": "colour named in the request"
        }
      },
      "required": [
        "color"
      ]
    }
  }
]