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FreightGate Demurrage & Detention Calculator
x402
FreightGate Demurrage & Detention Calculator is a paid API for AI agents from api.shippingrates.org, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-13).
Calculates demurrage and detention costs for a specific shipping line, country, container type, and number of days, returning a slab-by-slab cost breakdown with free days and per-diem rates.
Price / call$0.1
Success—
StatusUnknown
How this service works
Calculate demurrage & detention costs for a shipping line, country, container type, and number of days. Returns slab breakdown with free days, per-diem rates, and total cost.
Output
A JSON object containing the shipping line, country, container type, number of days, the number of free days included, a list of cost slabs (each with from/to day range, rate per day, days in slab, and cost), the currency (USD), and the total cost across all chargeable days.
Example use cases
Example prompt
“What are the demurrage and detention costs for a 40HC container on Maersk in India if it's held for 14 days — show me the full slab breakdown with free days and per-diem rates?”
Technical details
Endpoint
POSThttps://api.shippingrates.org/api/dd/calculate?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a precise, slab-by-slab demurrage and detention cost calculation for a specific shipping line in a specific country, rather than a cross-line comparison. Ideal for logistics agents, freight forwarders, or importers who know their shipping line and need an exact liability estimate before container return.
Side effects
- Unsupported shipping line slug returns validation error
- Country code not covered by the dataset returns empty or error response
- Container type not in supported enum returns 400 bad request
- Days value outside 1–365 range is rejected
- Missing required fields returns schema validation error
- Payment failure (x402 USDC) blocks request from being processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| days | number | Number of detention days (1-365) |
| line | string | Shipping line slug: maersk, msc, cma-cgm, hapag-lloyd, one, cosco, zim |
| country | string | ISO 2-letter country code (e.g. IN, AE, SG, CN, MY, LK, PK, BD, TH) |
| container_type | string | Container type: 20DV, 40DV, 40HC, 20RF, 40RF, 20OT, 40OT, 20FR, 40FR |
Output
Schema · Response
{
"type": "json",
"example": {
"days": 14,
"line": "maersk",
"slabs": [
{
"to": 7,
"cost": 22.5,
"days": 3,
"from": 5,
"rate_per_day": 7.5
},
{
"to": 14,
"cost": 105,
"days": 7,
"from": 8,
"rate_per_day": 15
}
],
"country": "IN",
"currency": "USD",
"free_days": 4,
"total_cost": 127.5,
"container_type": "40HC"
}
}Tags
x402
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