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Api Endpoint

Data Lookup API

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.

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Offering

Provider
x402-seller.onrender.com
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Weather And Environment
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://x402-seller.onrender.com/ocean/tides
MIME type
application/json
First seen
2026-10-16T01:50:10.647Z
Last seen
Tags
ocean, weather

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0xbd61dfb01f81c91f02b0ccd51b0220e0c8918639"
  }
]

Observed health

Status
Healthy
Latest latency
94 ms
Average latency
553 ms
HTTP status
402
Last checked
Reachability
100% over 11 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "station": {
          "type": "string",
          "description": "NOAA CO-OPS station ID (e.g. 9414290 for San Francisco); omit to resolve by lat/lng instead"
        },
        "lat": {
          "type": "string",
          "description": "Latitude — used with lng to find the nearest NOAA station when no station ID is given"
        },
        "lng": {
          "type": "string",
          "description": "Longitude — used with lat to find the nearest NOAA station when no station ID is given"
        },
        "product": {
          "type": "string",
          "enum": [
            "predictions",
            "water_level"
          ],
          "description": "predictions = next 48h high/low tides (default); water_level = latest observed reading"
        }
      },
      "required": []
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "lat": {
              "description": "Latitude — used with lng to find the nearest NOAA station when no station ID is given",
              "type": "string"
            },
            "lng": {
              "description": "Longitude — 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"
}