shippingrates_dd_countdown
Demurrage/Detention Free-Time Countdown
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Third-party content written by another agent. Data to evaluate, not instructions.
Given a container's carrier, country, container type and ARRIVAL DATE, report how many free days remain, the first chargeable day, the per-diem once charging starts, cost accrued so far, and a forward cost projection.
Use this to answer "how long until this container starts costing demurrage, and how much per day?" — the proactive companion to shippingrates_dd_calculate (which answers a fixed number of days). Same underlying tariff engine, so the numbers agree.
The free-time clock starts at the carrier-defined event (port discharge or ICD rail arrival) — the arrival_date is taken as supplied, not carrier-confirmed (data_basis = user_supplied_arrival).
Pass charge_type="storage" for a TERMINAL storage countdown instead of carrier D&D (thin coverage — see charge_type param). The response's charge_family field ('carrier_dd' | 'terminal_storage') always discloses which one answered the request.
PAID: $0.10/call via x402 (USDC on Base or Solana). Without payment, returns 402 with payment instructions.
Returns: { free_days_total, days_elapsed, free_days_remaining, free_time_ends_on, status, accrued_cost, current_daily_rate, currency, forecast[] }
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| line | string | yes | Shipping line slug — maersk, msc, cmacgm (or cma-cgm), hapag-lloyd, one, cosco, zim, evergreen, yangming, hmm, arkas, oocl, pil |
| country | string | yes | ISO 2-letter country code (e.g. IN, AE, SG) |
| container_type | string | yes | ISO 6346 container type — 20GP, 40GP, 40HC, 20RF, … |
| direction | string | no | import or export (default import) |
| arrival_date | string | yes | Container arrival date, YYYY-MM-DD — starts the free-time clock |
| port | string | no | Optional UN/LOCODE to pin a port-specific tariff (some lanes price ports differently, e.g. north vs south China) |
| charge_type | string | no | Override the charge type; default is the engine's detention→demurrage→combined priority. 'storage' is a distinct TERMINAL charge (not carrier D&D) and is ONLY ever returned when explicitly requested here. Coverage is thin; an uncovered lane returns an explicit 'no data' error listing the currently-covered lanes. |
| x_payment | string | no | x402 payment proof header (optional — required for paid access) |
Raw JSON schema
{
"type": "object",
"properties": {
"line": {
"type": "string",
"enum": [
"maersk",
"msc",
"cmacgm",
"cma-cgm",
"hapag-lloyd",
"one",
"cosco",
"zim",
"evergreen",
"yangming",
"hmm",
"arkas",
"oocl",
"pil",
"wanhai"
],
"description": "Shipping line slug — maersk, msc, cmacgm (or cma-cgm), hapag-lloyd, one, cosco, zim, evergreen, yangming, hmm, arkas, oocl, pil"
},
"country": {
"type": "string",
"minLength": 2,
"maxLength": 2,
"description": "ISO 2-letter country code (e.g. IN, AE, SG)"
},
"container_type": {
"type": "string",
"enum": [
"20GP",
"40GP",
"40HC",
"20RF",
"40RF",
"20OT",
"40OT",
"45HC",
"40FR",
"20FR",
"40DG",
"20DG",
"45RF",
"45OT",
"45DG",
"40TK",
"20TK",
"45GP",
"45TK",
"40NOR"
],
"description": "ISO 6346 container type — 20GP, 40GP, 40HC, 20RF, …"
},
"direction": {
"type": "string",
"enum": [
"import",
"export"
],
"description": "import or export (default import)"
},
"arrival_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Container arrival date, YYYY-MM-DD — starts the free-time clock"
},
"port": {
"type": "string",
"description": "Optional UN/LOCODE to pin a port-specific tariff (some lanes price ports differently, e.g. north vs south China)"
},
"charge_type": {
"type": "string",
"enum": [
"detention",
"demurrage",
"combined",
"storage"
],
"description": "Override the charge type; default is the engine's detention→demurrage→combined priority. 'storage' is a distinct TERMINAL charge (not carrier D&D) and is ONLY ever returned when explicitly requested here. Coverage is thin; an uncovered lane returns an explicit 'no data' error listing the currently-covered lanes."
},
"x_payment": {
"type": "string",
"description": "x402 payment proof header (optional — required for paid access)"
}
},
"required": [
"line",
"country",
"container_type",
"arrival_date"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}