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Greeneris Sea State & Marine Weather Forecast
x402
Greeneris Sea State & Marine Weather Forecast is a paid API for AI agents from data.greeneris.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns Mediterranean marine weather forecasts including wave height, period, and direction for named ports or custom lat/lon coordinates, covering up to 7 days ahead.
Price / call$0.005
Success—
StatusUnknown
How this service works
Hourly sea-state forecast from Open-Meteo Marine wave models: wave height/direction/period, wind waves and swell, up to 7 days, UTC. Query: ?port=marseille|ajaccio|nice|... (12 Mediterranean presets) or ?latitude=43.3&longitude=5.4, plus ?days=1-7 (default 2). Includes a summary block (max wave height next 24h / full horizon). 1h cache. For sailing go/no-go, port ops and routing.
Output
Returns a JSON object with source attribution, a summary of first-hours wave heights, max wave height over 24h and the full forecast window, the resolved location (port name or lat/lon), hourly units, and the number of forecast days. Hourly breakdowns include wave height in metres, wave period in seconds, and wave direction in degrees.
Example use cases
Example prompt
“What will the sea conditions be like at Marseille over the next 3 days — specifically wave height and direction?”
Technical details
Endpoint
GEThttps://data.greeneris.io/v1/sea/stateWhen to prefer
Choose this endpoint when you need structured, machine-readable Mediterranean marine weather forecasts for named ports (Marseille, Ajaccio, Genoa, etc.) or arbitrary lat/lon coordinates, with wave height summaries and hourly breakdowns. Prefer this over generic weather APIs when nautical or marine-specific variables (wave period, wave direction) are required. Pay-per-call at $0.005 USDC with no account setup needed.
Side effects
- Invalid or out-of-range latitude/longitude returns an error
- Unsupported port name returns an error or empty result
- Forecast days value outside 1-7 range may be rejected or clamped
- HTTP 402 returned if payment not attached — endpoint requires x402 USDC payment before data is served
- Network timeout if upstream Open-Meteo service is unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"source": "Open-Meteo Marine (wave models ECMWF/MeteoFrance/DWD, CC-BY 4.0)",
"summary": {
"first_hours_wave_m": [
0.38,
0.4,
0.44,
0.5,
0.54,
0.58
],
"max_wave_height_m_24h": 0.62,
"max_wave_height_m_all": 0.88
},
"location": {
"port": "marseille",
"latitude": 43.25,
"longitude": 5.375
},
"hourly_units": {
"wave_height": "m",
"wave_period": "s",
"wave_direction": "°"
},
"forecast_days": 2
}
}Tags
x402
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