{
  "$schema": "https://a2a-protocol.org/latest/specification/",
  "name": "o-sumo (大相撲アーカイブ)",
  "description": "Static public archive of 大相撲 (Grand Sumo) banzuke, torikumi, and rikishi data. The Agent Card advertises a JSON-RPC 2.0 endpoint at https://osada.us/a2a (A2A v1.0.0, HTTP+JSON transport). The endpoint implements only the JSON-RPC transport framing — o-sumo has no task state, so every A2A method (message/send, tasks/get, tasks/cancel, ...) returns -32601 Method not found. Agents should fetch the public JSON API at /api/v1/*.json and follow the skills listed below for actual data retrieval.",
  "version": "1.0.0",
  "provider": {
    "url": "https://osada.us/",
    "organization": "o-sumo"
  },
  "documentationUrl": "https://osada.us/auth.md",
  "iconUrl": "https://osada.us/pwa-192.png",
  "supportedInterfaces": [
    {
      "url": "https://osada.us/a2a",
      "protocolBinding": "HTTP+JSON",
      "protocolVersion": "1.0.0"
    }
  ],
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extendedAgentCard": false
  },
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "text/markdown",
    "application/json",
    "text/html"
  ],
  "skills": [
    {
      "id": "osumo-content",
      "name": "osumo-content",
      "description": "Fetch official 大相撲 banzuke, torikumi, and rikishi data from the public o-sumo JSON API (https://osada.us/api/v1/*.json).",
      "tags": [
        "sumo",
        "banzuke",
        "torikumi",
        "rikishi",
        "json-api"
      ],
      "examples": [
        "https://osada.us/api/v1/banzuke.json の updatedAt を取得して差分更新を判断する",
        "https://osada.us/api/v1/torikumi.json から 202607 場所の 15 日分の取組結果を取得する",
        "https://osada.us/api/v1/rikishi.json から力士の ID と四股名一覧を取得する"
      ]
    },
    {
      "id": "osumo-discovery",
      "name": "osumo-discovery",
      "description": "Locate the right page on https://osada.us/ for a given basho (YYYYMM), torikumi day (YYYYMMDD), rikishi (id or shikona), kimarite, or analytics view.",
      "tags": [
        "sumo",
        "site-map",
        "url-resolution",
        "navigation"
      ],
      "examples": [
        "2026 年 7 月場所の番付ページの URL を組み立てる",
        "照ノ富士のプロフィールページ (/rikishi/{id}/) を rikishi.json の ID から解決する",
        "/sitemap.xml と /robots.txt を取得してクロール可能なページ一覧を作る"
      ]
    }
  ]
}