CodeforcesAn unofficial Codeforces helper made in 2015 by a Codeforces user: it reminds you before each contest, lists…Codeforces with your friends in view: a live scoreboard of the people you follow during a round, with predicted rating changes, reminders in your time zone, a ping when your solution passes system tests, and a summary after the contest. Open source, free, fixed for a Codeforces API change in 2026.
During a Codeforces round the site shows one standings table with thousands of names, while what most people want to know is how their friends are doing. That is the core of this bot, built by two Codeforces users, fjuengermann and tob123, and announced on the Codeforces blog in 2020.
/current_standings posts a scoreboard of just your friends that keeps updating while the contest runs, with predicted rating changes. Friends come from your Codeforces account if you add a Codeforces API key in /settings, or you add them by handle with /add_friend. The bot can tell you when a friend solves a problem, during the round or in upsolving, and when your own solution passes or fails system tests, so there is no need to keep refreshing the page. After the contest it sums up how you and your friends did, with "motivational" remarks that the politeness option in /settings tones down.
Setup starts with the name of your city, which sets the time zone for contest reminders. /upcoming lists the next rounds, and /rating and /friend_ratings show ratings in a table. It also works in groups, where you reply to the bot's messages so it can read your answers.
The code is open under the Apache 2.0 licence, and in May 2026 the authors fixed it after Codeforces changed its API. The interface is in English.
/current_standingsLive standings of your friends/upcomingUpcoming Codeforces contests/add_friendAdd friends by handle/friend_ratingsYour friends' ratings in a table/ratingCurrent rating of a handle/settingsTime zone, reminders, API key, politenessFree
| Criterion | Weight | Points | |
|---|---|---|---|
| Functionality | 25 | 8 / 10 | |
| Reliability & speed | 15 | 7 / 10 | |
| Popularity & trust | 15 | 5 / 10 | |
| Price & free tier | 10 | 10 / 10 | |
| Usability | 10 | 7 / 10 | |
| Safety & privacy | 10 | 7 / 10 | |
| Freshness | 5 | 7 / 10 | |
| Localization | 5 | 10 / 10 | |
| No intrusive ads | 5 | 10 / 10 | |
| Score | 100 | 75.5 |
No. Without a key you add friends by handle with /add_friend; the key only imports the friends you already have on Codeforces.
Yes. In a group, reply to the bot's messages, for example when it asks for your city, so that it receives your answer.
No. Two Codeforces users built it, announced it on the Codeforces blog and publish the code on GitHub.
