Yu-Gi-Oh! card scanner API

const socket = new WebSocket("wss://api.tcggraph.com/v1/scan", [
  "tcggraph.v1",
  `bearer.${process.env.TCGGRAPH_KEY}`,
]);

socket.onopen = () =>
  socket.send(
    JSON.stringify({
      type: "config",
      games: ["yugioh"],
      minConfidence: 0.92,
      prices: ["cardmarket", "tcgplayer"],
    }),
  );

socket.onmessage = (event) => {
  const frame = JSON.parse(event.data);

  for (const match of frame.matches ?? []) {
    // The printing, not just the card: set, number, language, finish.
    intake.add(match.printing, match.card.prices);
  }

  // Unresolved frames arrive too, and cost nothing.
  for (const miss of frame.unresolved ?? []) showHint(miss.reason);
};

for await (const jpeg of camera.frames()) socket.send(jpeg);

{
  "requestId": "scan_01K5Z8P4XQJ7YB3M",
  "latencyMs": 41,
  "matches": [
    {
      "confidence": 0.9962,
      "billed": true,
      "box": {
        "x": 0.171,
        "y": 0.064,
        "w": 0.658,
        "h": 0.872
      },
      "printing": {
        "id": "ygo_89631139",
        "language": "en",
        "finish": "nonfoil",
        "edition": "unlimited",
        "collectorNumber": "CT13-EN008"
      },
      "card": {
        "id": "ygo_89631139",
        "game": "yugioh",
        "name": "Blue-Eyes White Dragon",
        "set": {
          "code": "CT13",
          "name": "2016 Mega-Tins"
        },
        "rarity": "Ultra Rare",
        "prices": [
          {
            "source": "tcgplayer",
            "region": "NA",
            "currency": "USD",
            "market": 0.13
          },
          {
            "source": "cardmarket",
            "region": "EU",
            "currency": "EUR",
            "market": 0.1,
            "trend": 0.1,
            "sellers": 144
          }
        ]
      },
      "alternatives": []
    }
  ],
  "scans": {
    "billed": 1,
    "remaining": 5842
  }
}