# Karte Halowerk European Port Throughput Statistics

> Karte Halowerk European Port Throughput Statistics is a paid API for AI agents from karte.halowerk.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns quarterly Eurostat port throughput statistics for European ports — inbound/outbound split, imbalance, year-over-year change, and trend direction — addressable by port name or UN/LOCODE.

## Facts

- Endpoint: POST https://karte.halowerk.com/v1/port-congestion
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/karte-halowerk-european-port-throughput-statistics-98933ce7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CEOWn6rCJTvB-SKYmC73_

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability karte-halowerk-european-port-throughput-statistics-98933ce7 -d '<json body>'
```

Example prompt: Pull the quarterly Eurostat throughput stats for the Port of Rotterdam (UN/LOCODE NLRTM) — I want to see inbound vs outbound volumes, the trade imbalance, and how each quarter compares to the same quarter a year earlier.

## When to prefer this

Choose this endpoint when you need structured, quarterly European port cargo statistics sourced from official Eurostat data across 837 ports. Ideal for logistics analysis, trade flow research, port benchmarking, or monitoring year-over-year throughput trends. Prefer this over general shipping APIs when you need the inbound/outbound imbalance and trend direction for a specific European port by name or standard UN/LOCODE.

## Known failure modes

- Unknown port name or invalid UN/LOCODE returns an error or empty result
- Ports with insufficient Eurostat coverage may return partial or no data
- Requesting quarters outside the available Eurostat time window may return no records
- Ambiguous port names (e.g. common city names with multiple ports) may require UN/LOCODE disambiguation

## How this service works

Reports what actually moves through a European port and how that developed, from the quarterly Eurostat port statistics covering 837 ports, addressable by name or by UN/LOCODE. Throughput is given per quarter split into inbound and outbound, with the imbalance between the two, the change against the same quarter a year earlier, and the direction over the whole observed window.

## Output

Returns quarterly port throughput data including inbound and outbound cargo volumes, the directional imbalance between the two, the percentage or absolute change versus the same quarter one year prior, and an overall trend direction over the full observed window. Data covers up to 837 European ports addressable by name or UN/LOCODE.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "lat": {
   "type": "number",
   "maximum": 90,
   "minimum": -90,
   "description": "Optional: adds the OpenStreetMap handling infrastructure around this point."
  },
  "lon": {
   "type": "number",
   "maximum": 180,
   "minimum": -180,
   "description": "Belongs with lat."
  },
  "port": {
   "type": "string",
   "maxLength": 60,
   "minLength": 3,
   "description": "Port name or UN/LOCODE, for example Hamburg, Rotterdam or DEHAM."
  },
  "quarters": {
   "type": "integer",
   "default": 8,
   "maximum": 20,
   "minimum": 4,
   "description": "How many quarters of history to return."
  },
  "radius_km": {
   "type": "number",
   "default": 6,
   "maximum": 25,
   "minimum": 0.5,
   "description": "Radius for the infrastructure count."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/karte-halowerk-european-port-throughput-statistics-98933ce7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from karte.halowerk.com](https://www.zero.xyz/host/karte.halowerk.com/llms.txt)