Build it in minutes — the data lives forever.
OpenGolfAPI is building the open data commons for golf — every U.S. golf course, free, via REST API and MCP; open standards any developer or AI agent can build on; free and open, not a walled garden. Think Wikipedia, for golf course data.
Founded by Chicago tech entrepreneur Julian Pretto, OpenGolfAPI gives the data back to the game: free to read, free to build on, community-owned (ODbL). A developer — or an AI agent — can stand up a working golf app in minutes, and the data underneath is a permanent open commons that can't be rug-pulled.
We're glad to talk — the open standard, the AI-first vision, the data, or the story behind it.
Julian Pretto — Chicago tech entrepreneur and founder of OpenGolfAPI. He started OpenGolfAPI to make golf's course data open, permanent, and free for everyone to build on.
An open developer platform + data commons for golf — REST API and MCP.
16,800+ U.S. courses, free — scorecards, tees, weather, nearby; fully downloadable.
Open commons. Data: ODbL. Standards: CC0. Free forever, regardless.
OpenShot · Moments · OpenMatch · OpenJoin · OpenGolf ID (the glue).
A 56-tool MCP — agents read data, score games, and build apps against it.
"Sign in with OpenGolf" — one portable golfer ID across every app.
Press & media: info@opengolfapi.org
Developers & partnerships: info@opengolfapi.org