How can I get a pro-apis key for test? I want to use these apis : https://pro-api.solscan.io/pro-api-docs/v1.0.

Actually, I want to fillter the accounts' transfers at websocket or https. when I use logsSubscribe at ws, there is only one public key can be set up, but we have a lot of accounts. and then I want to subscribe accountSubscribe topic at ws, but I don't know how many ws colections can be keep at sametime.

If someone had the experience as me, please answer me, it's very urgent! thanks so so much!

1 Answer 1


You might use use map and an array of public key strings to listen to many tens of thousands at one time

const publicKeyStrings = [...]

const publicKeys = publicKeyStrings.map((pubKeyStr) => new PublicKey(pubKeyStr));

publicKeys.map(async (publicKey) => {
  connection.onAccountChange(publicKey, async (accountInfo) => {
    const balance = accountInfo.lamports;
    console.log(balance, publicKey)
  • Thanks for your kind answer! Your example could listened the change of balance, but couldn't get the detail transaction that from another acount or sent by itself. I hope that I can know the account's transactions. like a tx scanner.
    – Ricky
    Dec 19, 2023 at 11:59
  • On the callback you might try to have it call getSignaturesForAddress, {limit: 1}, then getParsedTransaction on that and you'll have the latest transactions details
    – spaghetti
    Dec 24, 2023 at 11:53

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