List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=is_open&page=3620
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "username": "matburt",
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                "next_run": "2026-05-07T19:00:00Z",
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            "description": "-awda",
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            "title": null,
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                "username": "MAESTRO of BADUK",
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            "title": null,
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            "handicap": 0,
            "rules": "korean",
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                "summary": "한국인 대환영. 한국인과 글로벌 유저들을 위한 모임, We are connected all together.",
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                "username": "Sch-Mentor",
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        {
            "id": 559,
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            "director": {
                "id": 18975,
                "username": "ademkula",
                "country": "tr",
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            },
            "is_open": true,
            "exclude_provisional": false,
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                "id": 78,
                "name": "OGS Mini Tournaments",
                "summary": "The home for all of the old OGS mini tournaments",
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                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
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            "subsequent_pairing_method": "strength",
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            "analysis_enabled": false,
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            "ended": "2008-09-04T17:54:43Z",
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            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
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        {
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            "name": "FNRRT: Double Elimination for 25k-14k [FAST] # IV",
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                "id": 1872546,
                "username": "Sch-Mentor",
                "country": "001",
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            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slide",
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