#ranking

Live rankings and comparison of crypto exchanges, served from the public CoinPaprika feed — no key, nothing cached. Rank every crypto exchange by adjusted 24h volume with its 7d/30d volume, number of markets and currencies and confidence score; pull one exchange's full profile (volumes, market count, website and social links, status); list an exchange's trading pairs with price and 24h volume; and search exchanges by name. A cross-exchange comparison layer, distinct from single-exchange ticker feeds and whole-market price feeds — it answers which venues are biggest and what they trade. Volumes in USD; adjusted = wash-trade-filtered.

api.oanor.com/cryptoexchanges-api

The all-time Olympic medal table as an API — cumulative Summer and Winter Olympic results for every National Olympic Committee. For each country: its NOC code and, split into Summer / Winter / Combined, the number of Games attended and the gold, silver, bronze and total medals won. Look a country up by name or NOC code, rank countries by any medal metric (all-time gold, winter gold, totals and more), or search. A stable sports reference for quiz, media, sports and data-viz apps. Distinct from single-Games results.

api.oanor.com/olympicmedals-api

Compute Elo ratings — the rating system behind chess, esports, games and competitive leaderboards. The expected endpoint takes two players' ratings and returns each side's win probability using the classic logistic formula 1 / (1 + 10^((Rb − Ra) / 400)), names the favourite and reports the rating gap. The match endpoint applies a result — a win, loss or draw for player A — and returns both players' updated ratings, the exact points each one gained or lost, and the expected scores, using a configurable K-factor (32 by default; lower for established players, higher for newcomers, so ratings settle or move quickly as you choose). An upset is rewarded with a bigger swing and a draw shifts points toward the underdog, exactly as Elo intends. Everything is computed locally and deterministically, so it is instant and private — no players or leaderboard are stored. Ideal for games and esports matchmaking, chess and board-game apps, tournament and ladder systems, ranking and reputation features, and A/B-style skill comparisons. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This computes ratings from inputs you provide; it does not store a leaderboard or look up a player's rating.

api.oanor.com/elo-api