Moltline Shipping Maths
Dimensional weight, parcel fit, landed cost and freight class. 4 of 6 tools free.
| Endpoint | https://mcp.moltlinestudio.com/shipping (streamable-http) |
|---|---|
| Registry version | 1.2.0 |
| Now | 6 tools · grade A (95) · pin ts_33442a6cea0b75e249f7c23aa506cd62 · protocol 2025-06-18 |
| First / last listed | 2026-10-26 08:13 UTC / 2026-10-26 08:13 UTC |
| Grade over time | 2026-10-26: A (95), 6 tools |
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Tools: dim_weight parcel_fit landed_cost freight_class rate_card free_shipping_threshold
dim_weight | Work out whether a parcel bills on its size or its weight. FREE.
Carriers charge the greater of actual weight and dimensional weight, so a
light bulky box costs more than the scale suggests. Typical input
{"length": 18, "width": 12, "height": 10, "actual_weight": 6} returns
{"cubic": 2160.0, "dim_weight": 15.54, "actual_weight": 6.0,
"billable_weight": 15.54, "billed_on": "dimensional", "overage" params: length*, width*, height*, actual_weight*, divisor, custom_divisor |
parcel_fit | Pick the smallest box an item actually fits in, allowing for padding. FREE.
Tries every rotation of the item against every box, so an item that only
fits diagonally-oriented is still found. Typical input {"item_length": 10,
"item_width": 6, "item_height": 4, "box_options": [[12, 9, 4], [14, 10,
6]]} returns {"fits": [{"box": [14, 10, 6], "cubic": 840.0, "slack": [2,
2, 0]}], "best": [14, 10, 6], params: item_length*, item_width*, item_height*, box_options*, padding |
landed_cost | Total what a unit really costs once freight, duty and fees are in. FREE.
Duty is applied to goods value, tax to goods plus duty plus freight (the
common import treatment), and the order is spelled out in the response so
you can check it against your own broker's method. Typical input
{"unit_cost": 8.5, "quantity": 200, "freight_total": 640, "duty_pct": 6.5,
"tax_pct": 0} returns {"goods": 1700.0, params: unit_cost*, quantity, freight_total, duty_pct, tax_pct, other_fees |
freight_class | Derive a US LTL freight class from density. FREE.
Density in pounds per cubic foot maps to a class on the published NMFC
density scale. Typical input {"length": 48, "width": 40, "height": 36,
"weight": 400} returns {"cubic_feet": 40.0, "density_pcf": 10.0,
"density_class": "100", "caveat": "..."}.
Use for a first estimate before a carrier quote. Not as a final
classification: NMFC also weighs st params: length*, width*, height*, weight*, units |
rate_card | Turn a cost model into a customer-facing weight-banded price table. PREMIUM (license).
Prices each band at its upper bound so you never under-charge inside a
band, then rounds up to a tidy increment. Typical input {"base_cost": 4.2,
"cost_per_lb": 0.65, "bands_lb": [1, 2, 5, 10], "margin_pct": 25} returns
{"bands": [{"up_to_lb": 1, "cost": 4.85, "price": 6.5}, ...],
"over_top_band": "quote indivi params: base_cost*, cost_per_lb*, bands_lb*, margin_pct, round_to |
free_shipping_threshold | Find the order value at which free shipping stops costing you money. PREMIUM (license).
Break-even is where the gross margin on the order covers the shipping you
absorb. Typical input {"gross_margin_pct": 45, "ship_cost": 7.5,
"current_aov": 38, "target_uplift_pct": 15} returns {"break_even": 16.67,
"suggested_threshold": 43.7, "above_current_aov_by": 5.7, "rationale":
"..."}.
Use when setting o params: gross_margin_pct*, ship_cost*, current_aov*, target_uplift_pct |
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