#coding

Live competitive-programming rating data from AtCoder, the largest Japanese competitive-programming platform, over its public rating-history feed — no key, nothing stored. This is the contest-rating social view for a coder: their AtCoder rating, colour tier, contest record and performance over time, distinct from the other competitive-programming and developer platforms in the catalogue — AtCoder runs its own AGC/ABC contests, its own rating system and its own community. The user endpoint returns a profile snapshot: current rating, peak rating, the AtCoder colour tier (gray, brown, green, cyan, blue, yellow, orange, red), the number of rated contests, the best placing, the best performance and the latest contest. The history endpoint returns the full per-contest rating timeline — each contest with its date, old and new rating, the rating delta, placing, performance and whether it counted as rated. The stats endpoint aggregates a coder's record: rated versus unrated contests, average and best performance, contest wins, podium finishes, the rating range and per-year activity. Build coder leaderboards, rating cards, contest-tracking bots and recruiting signals on top of real AtCoder data. Lookup is by handle; the legendary handle "tourist" is always available.

api.oanor.com/atcoder-api

Live data from LeetCode, the largest coding-interview and competitive-programming community: a member's coding profile (global ranking, reputation, country, problems solved split by easy/medium/hard, total submissions and badges), their competitive standing (contest rating, global ranking, contests attended, top percentage), their activity (current solving streak, total active days, submissions over the past year) and LeetCode's daily coding challenge (today's problem, difficulty, acceptance rate and topic tags).

api.oanor.com/leetcode-api

Live profile, ranking and challenge data from Codewars, the competitive-programming community where developers level up by solving "kata". Get a member's whole standing — honor points, overall rank as a Codewars kyu/dan grade with its score, the per-language ranks they hold, their clan, their global leaderboard position and how many kata they have completed and authored. Pull the paginated list of kata a member has solved with the languages they used, the kata a member has created with rank and popularity, or any code challenge in full — its category, difficulty, tags, available languages and community stats (total completed, attempts, stars and vote score). Live, no key, nothing stored. Distinct from Codeforces, GitHub and Stack Exchange APIs — this is the Codewars honor, kyu-rank, clan, leaderboard and kata-challenge graph. Perfect for developer leaderboards, coding-community, gamification, portfolio and recruiting apps.

api.oanor.com/codewars-api