NDBC 42085
Neptun covers NDBC 42085 (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: 17.8700, -66.5370
Request
curl -H "Authorization: Bearer mapi_YOUR_KEY" \
"https://neptun.marine-api.com/v1/levels?lat=17.8700&lon=-66.5370&radius=5"