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.

Resource: x402-seller.onrender.com/ocean/tides

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0xbd61dfb01f81c91f02b0ccd51b0220e0c8918639

Payment methods: — · Last validation: 2026-09-14 16:42:07.533+00

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      "queryParams": {
        "type": "object",
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        "properties": {
          "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": {
            "enum": [
              "predictions",
              "water_level"
            ],
            "type": "string",
            "description": "predictions = next 48h high/low tides (default); water_level = latest observed reading"
          },
          "station": {
            "type": "string",
            "description": "NOAA CO-OPS station ID (e.g. 9414290 for San Francisco); omit to resolve by lat/lng instead"
          }
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    "properties": {
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      "example": {
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        "properties": {
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          },
          "lng": {
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              "number",
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            ]
          },
          "time": {
            "type": "string",
            "description": "Observation time (GMT); present only when product=water_level"
          },
          "datum": {
            "type": "string"
          },
          "tides": {
            "type": "array",
            "description": "High/low tide predictions for the next 48 hours; present only when product=predictions"
          },
          "units": {
            "type": "string"
          },
          "source": {
            "type": "string"
          },
          "product": {
            "type": "string"
          },
          "station": {
            "type": "string"
          },
          "heightFt": {
            "type": "number",
            "description": "Observed water level in feet above MLLW; present only when product=water_level"
          },
          "timeZone": {
            "type": "string"
          },
          "distanceKm": {
            "type": "number",
            "description": "Distance from the requested lat/lng to the station used; only present when resolved by lat/lng"
          },
          "preliminary": {
            "type": "boolean",
            "description": "True if the reading is preliminary/unverified; present only when product=water_level"
          },
          "stationName": {
            "type": [
              "string",
              "null"
            ]
          }
        }
      }
    }
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Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.