Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments/?format=api&ordering=-board_size&page=5773
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"open", "started": "2026-01-01T18:31:46.171817Z", "ended": "2026-01-01T19:01:46.065930Z", "start_waiting": "2026-01-01T18:31:46.102002Z", "board_size": 9, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_9.png", "player_count": 5, "ranked": true }, { "id": 2525, "name": "Title match for: Kuksu Nines Title Tournament 10th Cycle", "director": { "id": 4, "username": "matburt", "country": "us", "icon": "https://secure.gravatar.com/avatar/1dff84686f829e8ef90e2e123f1baddf?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1125.8827017028436, "deviation": 78.19731452501959, "volatility": 0.06006087171771568 } }, "ranking": 17.66169912212786, "professional": false, "ui_class": "supporter moderator admin" }, "description": "Title match for: Kuksu Nines Title Tournament 10th Cycle (surcouf vs KlausP)", "schedule": null, "title": { "id": 8, "name": "Kuksu Nines Title Tournament", "holder": { "id": 40094, "username": "pollemand", "country": "dk", 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"icon": "https://cdn.online-go.com/5.1/img/trophies/kuksu_9.png", "player_count": 0, "ranked": true }, { "id": 454, "name": "Ukino-kun's mini-tournament", "director": { "id": 3822, "username": "Ukino-kun", "country": "us", "icon": "https://secure.gravatar.com/avatar/fe78c92d46e217fec03aa7ad264679f1?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1234.3148191585678, "deviation": 68.55450127714668, "volatility": 0.059998653723032085 } }, "ranking": 19.79031064936046, "professional": false, "ui_class": "" }, "description": "", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 86400, "time_control_parameters": { "time_control": "fischer", "initial_time": 259200, "max_time": 432000, "time_increment": 86400 }, "is_open": true, "exclude_provisional": false, "group": { "id": 78, "name": "OGS Mini Tournaments", "summary": "The home for all of the old OGS mini tournaments", "require_invitation": false, 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