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NOAA Coastal Tide Predictions & Water Level
x402
NOAA Coastal Tide Predictions & Water Level is a paid API for AI agents from x402-seller.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns U.S. coastal tide predictions (next 48h high/low tides) or the latest observed water level from NOAA CO-OPS stations, identified by station ID or lat/lng.
Price / call$0.001
Success—
StatusUnknown
How this service works
U.S. coastal tide data from NOAA — when's the next high or low tide, or what's the water level right now: high/low tide predictions for the next 48 hours (product=predictions, default), or the latest observed water level (product=water_level). Identify the location by NOAA CO-OPS station ID, or just pass lat+lng and the nearest station is used automatically (distanceKm in the response says how far it is). Heights in feet above MLLW datum, times in GMT.
Output
A JSON object with tide predictions (array of high/low events with times in GMT and heights in feet above MLLW) or the latest observed water level reading, along with the resolved NOAA station ID, station name, datum, units, and — if resolved by lat/lng — the distance in km to the nearest station.
Example use cases
Boston Harbor tonight's high tide
“When is tonight's high tide for Boston Harbor? Use lat 42.359 and lng -71.052 to find the nearest NOAA station and give me the time and height.”
Current water level near Miami Beach
“What's the current observed water level near Miami Beach right now? My coordinates are lat 25.79 and lng -80.13 — find the nearest NOAA station and tell me how high the water is.”
Next low tide near Seattle
“When is the next low tide near Seattle? Use lat 47.606 and lng -122.334 to locate the closest NOAA station and show me the upcoming low tide times and heights for the next 48 hours.”
Technical details
Endpoint
GEThttps://x402-seller.onrender.com/ocean/tidesWhen to prefer
Use this endpoint when you need official NOAA tide predictions or observed water levels for U.S. coastal locations. It handles station resolution automatically from coordinates, making it ideal when the user doesn't know the station ID. Prefer it over generic weather APIs for precise maritime/tidal data anchored to MLLW datum.
Side effects
- No NOAA station found near the given lat/lng — response may error or return null station
- Invalid or non-existent station ID — NOAA API returns no data
- Coordinates outside U.S. coastal coverage (inland or non-U.S. waters) — no station resolved
- Missing required location input (neither station nor lat/lng provided) — likely a 400 error
- NOAA data temporarily unavailable — upstream outage
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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