Competing in
Data sources
Where these tournaments come from
There is no public API for upcoming over-the-board calendars. Causey indexes the hubs organizers already publish to — starting with the national feeds below, then registration sites and every USCF state affiliate.
Indexing now
Official USCF-rated tournament directory.
Major US opens — World Open, National Chess Congress, and more.
Adding soon
Organizer registration hub used by many US events.
Global pairings and results (Swiss-Manager publishes here).
FIDE CalendarSoon
Official international events — World Cup, Candidates, Grand Swiss.
All 50 states + DC — scholastic qualifiers and state championships. Opens a full directory.