← US Tides & Water Levels
environment by fourzerotwo
High and low tides
Predicted high and low tide times (local) and heights for up to 7 days from today.
High and low tides Free
Predicted high and low tide times (local) and heights for up to 7 days from today.
- cost
- Free then $0.002 / call
- MCP tool
- tides__predictions
- method
- GET
Free up to 100 calls a day over MCP (500 with a free key), then $0.002 per call by card credit or USDC. Free key · Pay by card
GET https://fourzerotwo.si/v1/tides/predictions
| Param | Type | Description |
|---|---|---|
| station | string | NOAA CO-OPS station id |
| days? | integer | Days (1–7, default 2) |
| datum? | string | MLLW (default) | MLW | MSL | MHW | MHHW | NAVD |
| units? | string | metric (default) | english |
# free: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/tides/predictions?station=9414290" # no key: returns 402 with the price, for x402 agents curl -i "https://fourzerotwo.si/v1/tides/predictions?station=9414290"
by fourzerotwo
Report this endpoint
Use it from an AI agent (MCP)
Add the server once, then ask for this data in plain English. The agent finds the endpoint with search_apis and runs it with call_api.
{
"mcpServers": {
"fourzerotwo": { "type": "http", "url": "https://fourzerotwo.si/mcp" }
}
}
# the call the agent makes
call_api {"tool": "tides__predictions", "arguments": {"station":"9414290","days":2}}
More from US Tides & Water Levels
- Tide stations near a point — NOAA tide-prediction stations within a radius (default 50 km) of a point, nearest first.
- Find tide stations — Search NOAA tide stations by name and/or state.
- Tide station details — A station's location, time zone, products offered and tidal datums.
- Observed water level — Observed 6-minute water levels for the last hours (default 6, max 72) with the latest reading.
- Station conditions now — Latest water temperature, air temperature, wind and air pressure reported at a station (whichever it measures)...
Source: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS). Public domain; not an official NOAA product.