Open Topo Data
Geocodingapi.opentopodata.org
Elevation and bathymetry lookup for one or many coordinates from open raster datasets — SRTM, ASTER, NED, EU-DEM, Mapzen, ETOPO1, GEBCO, EMOD, BKG, Swisstopo and NZ DEM — returning a JSON elevation per point in a Google Elevation API-compatible shape.
Capabilities (2)
GET /v1/data/opentopodata/datasets1 creditReturns the datasets this instance is configured with, each with its name and any child datasets, so a caller can pick a valid dataset path segment.
GET /v1/data/opentopodata/elevation1 creditReturns one elevation in metres per requested location, read from the chosen raster dataset, with the resolved latitude and longitude echoed back; supports pipe-separated point lists, polyline input, path sampling and nearest/bilinear/cubic interpolation.
Licence
Open Topo Data publishes no licence for the API output. The documentation's only terms for the free public instance are limits: "Max 100 locations per request. Max 1 call per second. Max 1000 calls per day." The server software is MIT-licensed on GitHub (ajnisbet/opentopodata), but that grant covers the code, not the elevation data and not the responses. The elevation itself comes from third-party rasters which the site names by provider - USGS, NASA, NOAA, EEA, LINZ, BKG, Swisstopo, GEBCO, EMODnet, Mapzen - and their individual licences are not restated as a grant to us. Because the service grants nothing explicit over its output, we claim no rights: commercialUse and redistribution are both false.
https://www.opentopodata.org/api/Attribution
Display this wherever you show the data. It arrives on every response as provenance.attribution_text.
Elevation data via Open Topo Data (api.opentopodata.org). Underlying datasets belong to their respective providers (USGS, NASA, NOAA, EEA, LINZ, BKG, Swisstopo, GEBCO, EMODnet, Mapzen). Not affiliated with or endorsed by Open Topo Data.
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