Fetch Multiple Markets in One Call

import "dotenv/config";

const DFLOW_METADATA_API_URL = process.env.DFLOW_METADATA_API_URL ?? "https://dev-prediction-markets-api.dflow.net";
const DFLOW_API_KEY = process.env.DFLOW_API_KEY; // optional; not needed for dev endpoints

const headers: HeadersInit = { "Content-Type": "application/json" };
if (DFLOW_API_KEY) headers["x-api-key"] = DFLOW_API_KEY;

const res = await fetch(`${DFLOW_METADATA_API_URL}/api/v1/markets/batch`, {
  method: "POST",
  headers,
  body: JSON.stringify({
    tickers: ["MARKET_TICKER_1_HERE", "MARKET_TICKER_2_HERE"],
    mints: ["OUTCOME_OR_LEDGER_MINT_1_HERE", "OUTCOME_OR_LEDGER_MINT_2_HERE"],
  }),
});

const { markets, cursor } = await res.json();

console.log(`Resolved ${markets.length} of the requested IDs`);
for (const m of markets) {
  console.log(`  ${m.ticker}  status=${m.status}  yesBid=${m.yesBid ?? "n/a"}`);
}

// `tokenMints` is the list of SPL token mint addresses found in a wallet
// (the `mint` field on each entry from connection.getParsedTokenAccountsByOwner).
// These are NOT wallet addresses; they're token mint addresses.
// See the Track Positions recipe for how to fetch them from a wallet.
const tokenMints: string[] = [
  "SPL_TOKEN_MINT_1_HERE",
  "SPL_TOKEN_MINT_2_HERE",
];

// Step 1: filter down to just the outcome token mints
const filterRes = await fetch(`${DFLOW_METADATA_API_URL}/api/v1/filter_outcome_mints`, {
  method: "POST",
  headers,
  body: JSON.stringify({ addresses: tokenMints }),
}).then((r) => r.json());

const outcomeMints: string[] = filterRes.outcomeMints ?? [];

if (outcomeMints.length > 0) {
  // Step 2: fetch the full market object for each in one call
  const batchRes = await fetch(`${DFLOW_METADATA_API_URL}/api/v1/markets/batch`, {
    method: "POST",
    headers,
    body: JSON.stringify({ mints: outcomeMints.slice(0, 100) }),
  }).then((r) => r.json());

  for (const market of batchRes.markets) {
    console.log(market.ticker, market.title, market.status);
  }
}