We stand on other people's open data. Here's all of it.
OpenGolfAPI is a commons built out of other commons. Every source below is named, licensed, and linked — that's not a courtesy, it's the deal we accepted when we used the data. If you redistribute anything you got from us, you inherit these obligations too.
© OpenStreetMap contributors (ODbL 1.0) via OpenGolfAPI
Anywhere you display course data from OpenGolfAPI — a map, a list, an app screen, an export —
that line (or an equivalent that names OpenStreetMap) has to be visible or one click away.
The same string ships in every API response as _attribution.
Course discovery, coordinates, boundaries, hole and hazard geometry, and much of the surrounding points-of-interest data. This is the backbone of the dataset.
© OpenStreetMap contributors · openstreetmap.org/copyright · ODbL 1.0 full text
Course descriptions and history, plus Wikidata identifiers used to match courses. Every
description carries its own source link and licence in the API as description_source.
Text is available under CC BY-SA 4.0. Wikidata is CC0. Images from Wikimedia Commons carry their own per-file licences.
Fills in contact and identity facts — phone numbers, websites, social links, city — where no open feed covered them. Used under the Apache License 2.0.
Addresses and postal codes, geocoded from OpenStreetMap data. © OpenStreetMap contributors.
Monthly climate normals, "best months to play", and live on-course conditions.
Weather data by Open-Meteo.com. The credit travels with the payload — every
climate response carries a source object naming Open-Meteo and CC BY 4.0.
30-year monthly temperature and precipitation normals used to backfill U.S. courses. A work of the U.S. federal government — no attribution required, credited anyway.
Live U.S. forecasts on the per-course weather endpoint. National Weather Service, U.S. federal government — public domain.
Sunrise, sunset, day length and golden-hour windows — used to work out how much daylight is left for a round. Free public API, used within its terms.
Ground elevation per hole, via the free Open-Elevation lookup API. The terrain underneath it is NASA SRTM — public domain.
LiDAR elevation used to derive course terrain. U.S. Geological Survey — public domain.
Corrections, submissions, photos and local knowledge sent in by people who play these courses. Contributions go back into the open dataset under the same licence everyone else gets — nobody's edit gets locked up.
The dataset is ODbL 1.0 — the same licence as OpenStreetMap. Use it commercially, build a business on it; just attribute the sources and share alike if you publish a derived database. Our open standards (OpenShot, Moments, OpenMatch, OpenJoin, the OpenGolf ID schema) are CC0 — take them, no strings.
If we've used your data and failed to credit it properly, that's a bug and we'll fix it fast — info@opengolfapi.org or open an issue.