platform notes

Official Codeforces API, so handles 404 cleanly. Missing user is HTTP 404 with detail, not a fake zeroed stats object.

Heatmap also still understands the old days query. Prefer view.

Rate-limit this API politely. Codeforces bans noisy IPs. The local limiter is a courtesy, not a substitute.

rank is the title (specialist, expert, …). globalRanking may be null.

CORS *.