NOAA CO-OPS — water levels, tide predictions, currents, coastal met. No auth. - searchStations ⭐ NWLON 301 + tidepredictions 3.4K / currentpredictions 4.4K / historicwl 2.9K / watertemp / met / harcon - getStation (expand: datums | sensors | harcon | products) - getWaterLevels ⭐ observed (preliminary + verified). 31-day cap. - getTidePredictions ⭐ hi/lo (365d) or 6-min (31d) / hourly (365d). - getMeteorological ⭐ wind / air_temperature / water_temperature / air_pressure - getServiceInfo upstream quirks: HTTP 200 + body {error:{message}} on bad input — check body. 3 response shapes (water_level, predictions, currents_predictions). Datums product removed — discover via mdapi expand. Long-period stations only support hourly_height/high_low; Great Lakes accepts IGLD.
6 methodsFreshness not declared
Knowledge
Know your data sources.
The public data contract for every source PatchOps exposes over MCP: provenance, freshness, coverage, caveats, and per-method schemas. Also available as JSON at /api/knowledge/data-sources.
tag: maritime