n01 is a free tournament and league system used by more than 200,000 competitions around the world. Single elimination, double elimination, round robin and Swiss-system formats work for darts and for any other sport such as tennis, football or pool. Players enter, watch and play from their phones. Nothing to install.
Sample: see a tournament bracket
Organise tournaments and leagues for any sport. For darts, n01 also does the scoring.
Single elimination, double elimination, round robin, Swiss system and one-off matches. Third-place playoffs and automatic seeding from the round robin into the final bracket are supported.
Group several events into one league and run individual or team leagues. Team orders, schedules and rankings per event are generated automatically.
Scoring for 01 games and Cricket. Local matches, matches against the computer, online matches, and n01 Live, which scores tournament matches and posts the result to the bracket.
From preparation to running the day and publishing the results, n01 takes the work out of organising.
Single elimination, double elimination, round robin, Swiss system and one-off matches. A third-place playoff can be added.
Sports where the higher score wins, such as football and baseball, and sports decided by a set number of points or sets, such as tennis, table tennis and darts.
It runs in a web browser, so it can be used on iPhone, Android and PC. Participants do not have to install anything.
Publish the progress of the tournament so that participants and spectators can follow it in real time. A private tournament is visible only to people who know the URL.
Show the court or board number of each match with a badge. The autopilot assigns badges automatically and notifies the players when their badge is set.
Tournaments can have up to 1,024 players. Up to 64 players are free of charge.
Assign players to the bracket or the round robin at random, seed them manually first, or assign the round robin winners to the final bracket automatically.
While entries are open, participants can enter with their own social account. The organiser can also add entries manually.
Contact the participants through the chat inside the tournament. Tracking sends a push notification when a badge is set.
n01 started as a darts scoring application. The same system covers practice, matches, online play and the scoring of tournament games.
Tournaments with up to 64 players are free.
Tournaments with up to 64 players are free of charge (ads are shown).
For 65 players or more, a subscription or a per-event payment raises the player limit. The API plan covers the use of the External Integration API.
Payment is made with PayPal from "About pricing" on the administration screen.
Tutorials for first-time organisers, operating manuals and sample competitions for various sports.
Everything the administration screen does, from creating a tournament to entering results, is available through the REST API. The server also speaks MCP (Model Context Protocol), so an AI agent such as Claude can run a tournament for you.
Reading public data needs no credentials and is free. Writing requires the API plan (subscription).
claude mcp add --transport http n01 https://push.n01darts.com/api/v1/mcp
