Open Topo Data
opentopodata.org
A REST API that returns elevation and ocean depth for given latitude/longitude points from open elevation datasets.
The Open Topo Data API uses none authentication; has free pricing; offers a free tier (Free public API: max 100 locations per request, max 1 call/second, max 1000 calls/day); rate limits: Max 100 locations per request, max 1 call per second, max 1000 calls per day. Verified 2026-07-12 with per-field source links.
Free tier
Free public API: max 100 locations per request, max 1 call/second, max 1000 calls/day
opentopodata.org ↗Pricing
Public API is free; self-hosting available; paid hosting via sister project GPXZ for high-res data (contact [email protected])
opentopodata.org ↗Rate limits
Max 100 locations per request, max 1 call per second, max 1000 calls per day
opentopodata.org ↗OpenAPI spec
not documented null
no sourceMCP server
not documented null
no source