解析済みストリームで木星スワップを追跡

{
  "programs": ["JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4"],
  "instructionNames": ["route", "shared_accounts_route"],
  "accounts": {
    "include": ["So11111111111111111111111111111111111111112"],
    "roles": { "user_transfer_authority": "9xQeWvG816bUx9EPjHmaT23yvVM2ZWbrrpZb9PusVFin" }
  },
  "includeFailed": false,
  "includeCpi": true
}

import WebSocket from "ws";

const ws = new WebSocket("wss://beta.helius-rpc.com/?api-key=<API_KEY>");

const filter = {
  programs: ["JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4"],
  instructionNames: ["route", "shared_accounts_route"],
  accounts: {
    include: ["So11111111111111111111111111111111111111112"],
    roles: { user_transfer_authority: "9xQeWvG816bUx9EPjHmaT23yvVM2ZWbrrpZb9PusVFin" },
  },
  includeFailed: false,
  includeCpi: true,
};

ws.on("open", () => {
  ws.send(JSON.stringify({
    jsonrpc: "2.0",
    id: 1,
    method: "parsedTransactionSubscribe",
    params: [filter, { commitment: "confirmed", details: "full" }],
  }));
});

ws.on("message", (data) => {
  const msg = JSON.parse(data.toString());
  if (msg.method === "parsedTransactionNotification") {
    const { transaction, instructions, matchedIndexes } = msg.params.result.value;
    for (const i of matchedIndexes) {
      const ix = instructions[i];
      if (!ix.decoded) continue;
      console.log(transaction.signature, ix.decoded.args.in_amount, ix.decoded.args.slippage_bps);
    }
  }
});