Data

Tide predictions (NOAA CO-OPS) API

Given a NOAA CO-OPS tide station id, fetches today's high/low tide predictions from the keyless tides-and-currents API, normalizes them into clean events (meters and feet) and DERIVES the next upcoming tide and the day's tidal range from the highs and lows. The value-add: turning the raw hi/lo prediction rows into labelled events plus a computed next-tide and range an LLM can't extract. US stations. Answers 'next high tide at station X', 'tide times today', 'when is low tide', 'what is the tidal range here'.

Price$0.01per request

MethodPOST

Route/v1/data/tide

StatusLive

MIME typeapplication/json

Rate limit60/minute

Cache3600s public

datatidetidesnoaaco-opsoceanhigh-tidelow-tide

API URLhttps://x402.hexl.dev/v1/data/tide

Integration docs

Example request

{
  "stationId": "9414290",
  "now": "2025-01-01T08:00:00Z"
}

Example response

{
  "stationId": "9414290",
  "eventCount": 3,
  "tidalRangeMeters": 1.5,
  "nextTide": {
    "time": "2025-01-01T09:30:00Z",
    "heightMeters": 1.8,
    "heightFeet": 5.91,
    "type": "high"
  },
  "events": [
    {
      "time": "2025-01-01T03:12:00Z",
      "heightMeters": 0.5,
      "heightFeet": 1.64,
      "type": "low"
    },
    {
      "time": "2025-01-01T09:30:00Z",
      "heightMeters": 1.8,
      "heightFeet": 5.91,
      "type": "high"
    },
    {
      "time": "2025-01-01T15:40:00Z",
      "heightMeters": 0.3,
      "heightFeet": 0.98,
      "type": "low"
    }
  ]
}

Input schema

{
  "type": "object",
  "required": [
    "stationId"
  ],
  "properties": {
    "stationId": {
      "type": "string",
      "examples": [
        "9414290",
        "8454000"
      ]
    },
    "now": {
      "type": "string",
      "examples": [
        "2025-01-01T08:00:00Z"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}