List all tournaments or create a new tournament.

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HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "id": 96600,
            "name": "Correspondence 13x13 RoundRobin 2022-11-10 19:00",
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                "active": true,
                "created": "2015-02-20T06:00:14.582400Z",
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                    "time_increment": 86400
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                    "upper_bar": "20",
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                },
                "next_run": "2026-08-05T19:00:00Z",
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            },
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            "time_per_move": 89280,
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        {
            "id": 54291,
            "name": "The 17th Murase Go Group Tournament",
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                "id": 449215,
                "username": "SM-SYaKo",
                "country": "jp",
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            "title": null,
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                "speed": "correspondence",
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                "time_increment": 18000,
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            "exclude_provisional": false,
            "group": {
                "id": 2389,
                "name": "Murase Go Group",
                "summary": "The group of Japanese and any go player from different countries.\nこのグループは日本人や世界中の国々の人々が集うグループです。",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
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            "subsequent_pairing_method": "strength",
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            "analysis_enabled": true,
            "exclusivity": "open",
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            "ended": "2020-07-27T13:07:25.947698Z",
            "start_waiting": "2020-01-27T13:00:34.371529Z",
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}