x402-seller.onrender.com/ocean/tides
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.
Answeringour last check, 2026-09-25
1 of 1checks answered this week
238 msmedian answer time
$0.001listed price per call
$0.001price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://x402-seller.onrender.com/ocean/tides
| Category | Commerce and shopping |
|---|---|
| Provider host | x402-seller.onrender.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-25 | valid payment request | 402 | $0.001 | 238 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"lat": "37.7749",
"lng": "-122.4194",
"product": "predictions"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"lat": {
"description": "Latitude \u2014 used with lng to find the nearest NOAA station when no station ID is given",
"type": "string"
},
"lng": {
"description": "Longitude \u2014 used with lat to find the nearest NOAA station when no station ID is given",
"type": "string"
},
"product": {
"description": "predictions = next 48h high/low tides (default); water_level = latest observed reading",
"enum": [
"predictions",
"water_level"
],
"type": "string"
},
"station": {
"description": "NOAA CO-OPS station ID (e.g. 9414290 for San Francisco); omit to resolve by lat/lng instead",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"datum": {
"type": "string"
},
"distanceKm": {
"description": "Distance from the requested lat/lng to the station used; only present when resolved by lat/lng",
"type": "number"
},
"heightFt": {
"description": "Observed water level in feet above MLLW; present only when product=water_level",
"type": "number"
},
"lat": {
"type": [
"number",
"null"
]
},
"lng": {
"type": [
"number",
"null"
]
},
"preliminary": {
"description": "True if the reading is preliminary/unverified; present only when product=water_level",
"type": "boolean"
},
"product": {
"type": "string"
},
"source": {
"type": "string"
},
"station": {
"type": "string"
},
"stationName": {
"type": [
"string",
"null"
]
},
"tides": {
"description": "High/low tide predictions for the next 48 hours; present only when product=predictions",
"type": "array"
},
"time": {
"description": "Observation time (GMT); present only when product=water_level",
"type": "string"
},
"timeZone": {
"type": "string"
},
"units": {
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}