{
  "tools": [
    {
      "name": "convert_length",
      "title": "Feet-inch-fraction converter",
      "description": "Parse a construction dimension (e.g. \"12' 4-3/8\\\"\", \"3810 mm\", \"4.5'\") and convert between feet-inch-fraction, decimal feet, decimal inches, and metric. A bare number is read as inches.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "raw": {
            "type": "string",
            "description": "The dimension to parse, e.g. \"12' 6\\\"\", \"148.375\\\"\", \"3/8\\\"\", or \"3810 mm\"."
          },
          "roundDen": {
            "type": "integer",
            "enum": [
              2,
              4,
              8,
              16,
              32,
              64
            ],
            "default": 16,
            "description": "Round the imperial result to the nearest 1/den inch (2, 4, 8, 16, 32, 64)."
          }
        },
        "required": [
          "raw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "convert_scale",
      "title": "Architectural scale converter",
      "description": "Convert a length between a real-world dimension and its drawn (paper) size at a chosen architectural scale, in either direction.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "raw": {
            "type": "string",
            "description": "The length to convert, e.g. \"24'\" or \"3810 mm\"."
          },
          "scaleId": {
            "type": "string",
            "enum": [
              "1-16in",
              "3-32in",
              "1-8in",
              "3-16in",
              "1-4in",
              "3-8in",
              "1-2in",
              "3-4in",
              "1in",
              "1-5in",
              "3in",
              "1-5",
              "1-10",
              "1-20",
              "1-50",
              "1-100",
              "1-200",
              "1-500",
              "1-1000"
            ],
            "description": "Architectural scale id. Options — 1-16in = 1/16\" = 1'-0\"; 3-32in = 3/32\" = 1'-0\"; 1-8in = 1/8\" = 1'-0\"; 3-16in = 3/16\" = 1'-0\"; 1-4in = 1/4\" = 1'-0\"; 3-8in = 3/8\" = 1'-0\"; 1-2in = 1/2\" = 1'-0\"; 3-4in = 3/4\" = 1'-0\"; 1in = 1\" = 1'-0\"; 1-5in = 1-1/2\" = 1'-0\"; 3in = 3\" = 1'-0\"; 1-5 = 1:5; 1-10 = 1:10; 1-20 = 1:20; 1-50 = 1:50; 1-100 = 1:100; 1-200 = 1:200; 1-500 = 1:500; 1-1000 = 1:1000"
          },
          "direction": {
            "type": "string",
            "enum": [
              "realToDrawing",
              "drawingToReal"
            ],
            "default": "realToDrawing",
            "description": "realToDrawing = how large a real dimension is drawn on paper; drawingToReal = what a measured-on-paper length represents in reality."
          }
        },
        "required": [
          "raw",
          "scaleId"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "ada_ramp_slope",
      "title": "ADA ramp slope calculator",
      "description": "Ramp run, sloped length, landings, and handrail requirement for a given rise, with 2010 ADA §405 compliance flags.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "riseRaw": {
            "type": "string",
            "description": "Total vertical rise, e.g. \"30\\\"\" or \"760 mm\"."
          },
          "slope": {
            "type": "number",
            "description": "Running slope as a rise/run ratio (default 0.08333 = 1:12, the ADA max). e.g. 0.05 for 1:20."
          }
        },
        "required": [
          "riseRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "stud_spacing",
      "title": "Stud spacing reference",
      "description": "Field-stud count and bay layout for a wall at 16\" or 24\" on-center. Excludes corner, intersection, and rough-opening studs (IRC R602.3).",
      "inputSchema": {
        "type": "object",
        "properties": {
          "wallLengthRaw": {
            "type": "string",
            "description": "Wall length, e.g. \"24'\" or \"7315 mm\"."
          },
          "spacing": {
            "type": "integer",
            "enum": [
              16,
              24
            ],
            "default": 16,
            "description": "On-center spacing in inches (16 or 24)."
          }
        },
        "required": [
          "wallLengthRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "stair_calculator",
      "title": "Stair calculator",
      "description": "Riser count, riser height, tread run, pitch, and the 2R+T comfort check for a straight flight, with IRC R311.7 compliance flags.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "totalRiseRaw": {
            "type": "string",
            "description": "Total floor-to-floor rise, e.g. \"9' 0\\\"\" or \"2740 mm\"."
          },
          "treadDepthIn": {
            "type": "number",
            "default": 11,
            "description": "Tread (run) depth in inches (default 11; code minimum is 10)."
          }
        },
        "required": [
          "totalRiseRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "stair_stringer",
      "title": "Stair stringer calculator",
      "description": "Stringer slope length, plumb/level cut angles, framing-square rise & run, and the cut-stringer throat check. Reuses the code-checked stair layout (IRC R311.7).",
      "inputSchema": {
        "type": "object",
        "properties": {
          "totalRiseRaw": {
            "type": "string",
            "description": "Total floor-to-floor rise, e.g. \"9' 0\\\"\" or \"2740 mm\"."
          },
          "treadDepthIn": {
            "type": "number",
            "default": 11,
            "description": "Tread (run) depth in inches."
          },
          "boardWidthIn": {
            "type": "number",
            "default": 11.25,
            "description": "Stringer board actual width in inches — 2×10 = 9.25, 2×12 = 11.25, 2×14 = 13.25."
          }
        },
        "required": [
          "totalRiseRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "roof_pitch",
      "title": "Roof pitch converter",
      "description": "Convert a roof slope between rise-in-12 (\"6:12\"), degrees, and percent grade. Pure geometry.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "value": {
            "type": "string",
            "description": "The slope value, interpreted per \"unit\". For unit=pitch accepts \"6\" or \"6:12\"; for degrees a number of degrees; for percent a grade %."
          },
          "unit": {
            "type": "string",
            "enum": [
              "pitch",
              "degrees",
              "percent"
            ],
            "default": "pitch",
            "description": "How to interpret value: pitch (rise-in-12), degrees, or percent."
          }
        },
        "required": [
          "value"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "rafter_length",
      "title": "Rafter length calculator",
      "description": "Common-rafter run, rise, line length, plumb/seat cut angles, and per-foot length factors for a symmetric gable from a span and pitch.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "spanRaw": {
            "type": "string",
            "description": "Total building width, out-to-out of the wall plates, e.g. \"24'\"."
          },
          "pitchRaw": {
            "type": "string",
            "description": "Roof pitch as rise-in-12, e.g. \"6\" or \"6:12\"."
          },
          "overhangRaw": {
            "type": "string",
            "description": "Horizontal eave projection past the wall (optional)."
          },
          "ridgeThicknessRaw": {
            "type": "string",
            "description": "Ridge board thickness — rafter shortens by half of it (optional)."
          }
        },
        "required": [
          "spanRaw",
          "pitchRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "roofing_estimate",
      "title": "Roofing calculator",
      "description": "Roof surface area, \"squares\" (100 sq ft), and shingle bundles from a building footprint and roof pitch, with a waste allowance.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "lengthRaw": {
            "type": "string",
            "description": "Footprint length, e.g. \"40'\"."
          },
          "widthRaw": {
            "type": "string",
            "description": "Footprint width, e.g. \"28'\"."
          },
          "pitchRaw": {
            "type": "string",
            "description": "Roof pitch as rise-in-12, e.g. \"6\" or \"6:12\"."
          },
          "waste": {
            "type": "number",
            "default": 0.1,
            "minimum": 0,
            "description": "Waste allowance as a fraction (e.g. 0.1 for 10%)."
          }
        },
        "required": [
          "lengthRaw",
          "widthRaw",
          "pitchRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "drywall_paint_takeoff",
      "title": "Drywall & paint takeoff",
      "description": "Drywall sheets and paint gallons for a rectangular wall or ceiling area. Sheet sizes are physical; paint coverage is a ~350 sf/gal rule of thumb.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "widthRaw": {
            "type": "string",
            "description": "Surface width, e.g. \"24'\"."
          },
          "heightRaw": {
            "type": "string",
            "description": "Surface height, e.g. \"9'\"."
          },
          "sheet": {
            "type": "string",
            "enum": [
              "4x8",
              "4x9",
              "4x10",
              "4x12"
            ],
            "default": "4x8",
            "description": "Drywall sheet size — 4x8 = 4 × 8 ft; 4x9 = 4 × 9 ft; 4x10 = 4 × 10 ft; 4x12 = 4 × 12 ft"
          }
        },
        "required": [
          "widthRaw",
          "heightRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "square_footage",
      "title": "Square footage calculator",
      "description": "Area in sq ft, sq yd, m², and acres from length × width, optionally repeated (quantity) and costed ($/sq ft).",
      "inputSchema": {
        "type": "object",
        "properties": {
          "lengthRaw": {
            "type": "string",
            "description": "Length, e.g. \"12'\" or \"3.66 m\"."
          },
          "widthRaw": {
            "type": "string",
            "description": "Width, e.g. \"10'\"."
          },
          "quantity": {
            "type": "integer",
            "default": 1,
            "minimum": 1,
            "description": "Number of identical areas (whole number ≥ 1)."
          },
          "price": {
            "type": "number",
            "minimum": 0,
            "description": "Optional price per square foot for a cost estimate."
          }
        },
        "required": [
          "lengthRaw",
          "widthRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "tile_flooring",
      "title": "Tile & flooring calculator",
      "description": "Tiles (and boxes) to cover a floor or wall area, with a waste allowance for cuts and breakage.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "areaLengthRaw": {
            "type": "string",
            "description": "Area length, e.g. \"12'\"."
          },
          "areaWidthRaw": {
            "type": "string",
            "description": "Area width, e.g. \"10'\"."
          },
          "tileWidthRaw": {
            "type": "string",
            "description": "Single tile width, e.g. \"12\\\"\"."
          },
          "tileHeightRaw": {
            "type": "string",
            "description": "Single tile height, e.g. \"24\\\"\"."
          },
          "waste": {
            "type": "number",
            "default": 0.1,
            "minimum": 0,
            "description": "Waste allowance as a fraction (e.g. 0.1 for 10%)."
          },
          "perBox": {
            "type": "integer",
            "minimum": 1,
            "description": "Optional tiles per box, to compute box count."
          }
        },
        "required": [
          "areaLengthRaw",
          "areaWidthRaw",
          "tileWidthRaw",
          "tileHeightRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "concrete_takeoff",
      "title": "Concrete takeoff",
      "description": "Concrete volume (cubic yards, cubic metres) and bag counts for slabs, footings, walls, columns, and round piers, with a waste allowance. Dimensions per shape — slab: Length × Width × Thickness; footing: Length × Width × Depth; wall: Length × Height × Thickness; column: Width × Depth × Height; round: Diameter × Height.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "shape": {
            "type": "string",
            "enum": [
              "slab",
              "footing",
              "wall",
              "column",
              "round"
            ],
            "description": "Pour shape. slab = Slab; footing = Footing; wall = Wall; column = Column (rectangular); round = Round pier / sonotube"
          },
          "d1Raw": {
            "type": "string",
            "description": "First dimension (see shape legend in the description)."
          },
          "d2Raw": {
            "type": "string",
            "description": "Second dimension (see shape legend)."
          },
          "d3Raw": {
            "type": "string",
            "description": "Third dimension — required for box shapes (slab/footing/wall/column), ignored for round."
          },
          "count": {
            "type": "integer",
            "default": 1,
            "minimum": 1,
            "description": "Number of identical elements."
          },
          "wastePct": {
            "type": "number",
            "default": 0.1,
            "minimum": 0,
            "description": "Waste allowance as a fraction (default 0.1 = 10%)."
          }
        },
        "required": [
          "shape",
          "d1Raw",
          "d2Raw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "tributary_area",
      "title": "Tributary area & load takedown",
      "description": "Floor/roof area a column carries and the load it takes down (interior/edge/corner), using ASCE 7-22 minimum live loads.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "position": {
            "type": "string",
            "enum": [
              "interior",
              "edge",
              "corner"
            ],
            "description": "Column position: interior (full bay), edge (half), or corner (quarter)."
          },
          "bayXRaw": {
            "type": "string",
            "description": "Bay spacing in the X direction, e.g. \"24'\"."
          },
          "bayYRaw": {
            "type": "string",
            "description": "Bay spacing in the Y direction, e.g. \"30'\"."
          },
          "loadPsf": {
            "type": "number",
            "description": "Uniform load in psf. ASCE 7-22 T.4.3-1 minimum live loads: residential 40, office 50, assembly/lobby 100, light storage 125, roof 20."
          }
        },
        "required": [
          "position",
          "bayXRaw",
          "bayYRaw",
          "loadPsf"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "beam_span_depth",
      "title": "Beam span quick-reference",
      "description": "Rough member depth from a span using typical span-to-depth (L/d) ratios. Preliminary sizing only — not a span table or code check.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "memberId": {
            "type": "string",
            "enum": [
              "wood-joist",
              "wood-beam",
              "steel-beam",
              "steel-joist",
              "concrete-beam",
              "concrete-slab"
            ],
            "description": "Member type — wood-joist = Wood floor joist; wood-beam = Glulam / LVL beam; steel-beam = Steel beam; steel-joist = Open-web steel joist; concrete-beam = Concrete beam; concrete-slab = One-way concrete slab"
          },
          "spanRaw": {
            "type": "string",
            "description": "Clear span, e.g. \"16'\" or \"4.9 m\"."
          }
        },
        "required": [
          "memberId",
          "spanRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "guardrail_balusters",
      "title": "Guardrail baluster spacing",
      "description": "Even baluster/picket count and clear gap for a guard span under the 4\" sphere rule (a sphere of the max size must NOT pass, so gaps come out strictly under the limit).",
      "inputSchema": {
        "type": "object",
        "properties": {
          "spanRaw": {
            "type": "string",
            "description": "Clear span between guard posts, e.g. \"72\\\"\"."
          },
          "balusterWidthRaw": {
            "type": "string",
            "description": "Width of one baluster/picket, e.g. \"1.5\\\"\" for a 2×2 or \"0.75\\\"\" for metal."
          },
          "maxGapRaw": {
            "type": "string",
            "default": "4\"",
            "description": "Maximum allowed clear gap — the code sphere (default 4\")."
          }
        },
        "required": [
          "spanRaw",
          "balusterWidthRaw"
        ],
        "additionalProperties": false
      }
    },
    {
      "name": "guardrail_code_reference",
      "title": "Guardrail code reference",
      "description": "Cited guard height and opening (sphere) limits for residential (IRC §R312.1) and commercial (IBC §1015). Reference only — DatumSpot does not re-host code tables.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "code": {
            "type": "string",
            "enum": [
              "residential",
              "commercial"
            ],
            "description": "Optional filter: residential (IRC) or commercial (IBC). Omit for both."
          }
        },
        "additionalProperties": false
      }
    },
    {
      "name": "ada_dimension_reference",
      "title": "ADA dimensions reference",
      "description": "Cited dimensional requirements from the 2010 ADA Standards (turning space, clear floor space, reach ranges, doors, toilets, parking, and more). Omit category to list all categories.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "category": {
            "type": "string",
            "enum": [
              "turning-space",
              "clear-floor-space",
              "knee-toe",
              "reach-ranges",
              "protruding-objects",
              "doors",
              "water-closet",
              "lavatory",
              "drinking-fountain",
              "parking",
              "service-counter",
              "handrails"
            ],
            "description": "Category id — turning-space (Wheelchair turning space); clear-floor-space (Clear floor or ground space); knee-toe (Knee & toe clearance); reach-ranges (Reach ranges); protruding-objects (Protruding objects); doors (Doors & maneuvering clearance); water-closet (Toilet (water closet)); lavatory (Lavatory & sink); drinking-fountain (Drinking fountain); parking (Accessible parking); service-counter (Counters & work surfaces); handrails (Handrails)"
          },
          "variant": {
            "type": "string",
            "description": "Optional variant id within the category (e.g. approach direction). Omit for all variants."
          }
        },
        "additionalProperties": false
      }
    }
  ]
}