An open almanac of American golf, est. 2026

Every US golf course, in one open dataset.

Scorecards, tee data, locations, and recent edits across thousands of courses. ODbL-licensed, community-maintained — for golfers, developers, and anyone building on open golf data.

Browse Courses → Read the API docs

For golfers and developers alike

Built for two audiences. The same dataset.

If you're a golfer

Find courses, scan scorecards, plan a round. Every course has a page with rates, hours, and the actual yardages.

Browse by state or search by name
Compare tee sets and slope ratings
Edit anything that's outdated — community maintained
Claim your course if you're an owner or pro

Open the course browser →

If you're a developer

One REST endpoint, one MCP server, the full dataset on GitHub. No API key required.

1,000 calls/day, no signup
MCP server for Claude, ChatGPT, Gemini, Cursor
Bulk GeoJSON + CSV exports updated weekly
ODbL — same license as OpenStreetMap

See the API →

Try it now — no signup

The whole thing is just `curl` away.

# Search curl "https://api.opengolfapi.org/v1/courses/search?q=pebble" # All courses in a state curl "https://api.opengolfapi.org/v1/courses/state/CA" # Single course with scorecard curl "https://api.opengolfapi.org/v1/courses/{id}" # MCP server for AI agents npx @opengolfapi/mcp-server

What's in the dataset

The almanac, fielded.

Field	Coverage	Records
Course name, location, type	All 50 states + DC	14,708
Hole-by-hole scorecards	OSM-mapped + community-edited	13,151
Tee ratings, slopes, yardages	From scorecards + public sources	13,571
Architect, year built	Where known + community-edited	13,469
Phone, website, address	Verified through public sources	14,646
Climate normals (NOAA, 30-year)	All 50 states + DC	14,668
Nearby hotels + restaurants	OSM-sourced	14,277
MCP tools for AI agents	Search, by-state, detail, climate, nearby	5

Counts as of 2026-06-10. Updated as the crawler keeps walking — 205,000+ holes mapped to date.

Where the data comes from

Open all the way down.

Sources

OpenStreetMap — course locations and boundaries
NOAA — 30-year climate normals (public domain)
Nominatim — addresses and postal codes
Course websites — phone, email, hours (public facts)
Community contributions — anything you submit

License

ODbL-1.0 Same license as OpenStreetMap. You can use it commercially, just attribute us.

If you'd like to support the work — keeping the API running, adding new countries, paying weather + geocoding bills — donations help.

Support the project →