Tide predictions (high and low water, metres above MLLW, UTC times) for 1 to 7 d
Tide predictions (high and low water, metres above MLLW, UTC times) for 1 to 7 days at the NOAA station nearest a point, or at a station id, from NOAA CO-OPS (US public domain). Give lat and lon, or a place name. Coverage is US coasts, Great Lakes and territories only; a point more than 100 km from a station is a 404, not charged. search=name lists stations.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
20 msmedian answer time
$0.002listed price per call
$0.002price 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://api.sitecheck-api.workers.dev/api/tides
| Category | Search and research |
|---|---|
| Provider host | api.sitecheck-api.workers.dev |
| Networks | eip155:5042, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.002 | 20 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"days": "2",
"station": "8518750"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"days": {
"description": "Days of predictions, 1 to 7, default 2",
"type": "string"
},
"lat": {
"description": "Latitude (with lon)",
"type": "string"
},
"lon": {
"description": "Longitude (with lat)",
"type": "string"
},
"place": {
"description": "Place name, geocoded (instead of lat and lon)",
"type": "string"
},
"search": {
"description": "Name fragment to list stations instead of predictions, at least 3 characters",
"type": "string"
},
"station": {
"description": "NOAA station id, 7 digits, e.g. 8518750 (one of station, place, lat and lon, or search)",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}