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x402-portdwell Port/Chokepoint Congestion Index
x402
x402-portdwell Port/Chokepoint Congestion Index is a paid API for AI agents from x402-portdwell.nobodytools.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Returns daily or live port congestion index metrics (waiting vessels, anchor counts, vessel sizes) computed from public AIS data for major shipping ports and chokepoints.
Price / call$0.01
Success—
StatusUnknown
How this service works
Port/chokepoint congestion index (daily & live, computed from public AIS)
Output
Returns a JSON object with port code, query type, and a result object (or array for ranges) containing: date/timestamp, count of waiting merchant vessels, at-anchor count, cargo vessel count, tanker count, counts of large vessels (>=150m and >=200m LOA), total vessel length in km, data quality rating (USABLE/SPARSE/GAP), and regime (historical vs live). Returns null result with a note if no data exists for the requested day (that case is free).
Example use cases
Example prompt
“What's the latest congestion situation at LALB — how many merchant vessels are currently waiting, how many are at anchor, and what's the data quality look like?”
Technical details
Endpoint
GEThttps://x402-portdwell.nobodytools.com/indexWhen to prefer
Use this endpoint when you need quantitative port congestion metrics derived from AIS vessel positioning data — specifically waiting/anchored vessel counts and size breakdowns at major port/chokepoint sites. Prefer this over general shipping news APIs when you need structured, time-series-compatible numeric data for logistics analytics, supply chain monitoring, or shipping delay forecasting. Choose the 'current' flag for real-time snapshot; 'latest' for most recent completed day; date/range for historical analysis.
Side effects
- No data available for requested date — returns result:null with explanatory note (not charged)
- Data quality is SPARSE or GAP — returned but flagged
- Invalid port site code — error or empty response
- Conflicting selectors provided (e.g. both date and latest) — schema violation
- live/current query on a port without today's rollup yet — may return null
- Payment failure via x402 — 402 response, no data returned
- Future dates or pre-AIS coverage dates — null result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | Query params: port + EXACTLY ONE selector (latest | current | date | from&to | dates). |
| output | object | result is a point, a list (range/dates), or null when no data (GAP; free, not charged). |
Output
Schema · Response
{
"type": "json",
"example": {
"port": "LALB",
"query": "point",
"result": {
"date": "2025-11-15",
"cargo": 39,
"ge150": 54,
"ge200": 38,
"len_km": 14.63,
"regime": "merchant",
"tanker": 19,
"waiting": 58,
"at_anchor": 14,
"data_quality": "USABLE"
},
"source": "NOAA/MarineCadastre AIS"
}
}Tags
x402
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