NDBC 46054
Neptun covers NDBC 46054 (United States) through the NOAA NDBC network. One GET request returns its readings as JSON — in the same shape as every other network Neptun serves, so you write the parsing once.
Source: NOAA NDBC · Position: 34.2740, -120.4680
Request
curl -H "Authorization: Bearer mapi_YOUR_KEY" \
"https://neptun.marine-api.com/v1/levels?lat=34.2740&lon=-120.4680&radius=5"