Chainstack documentation

# accountSubscribe

Solana API method that subscribes to an account to receive notifications when the lamports or data for a given account public key changes.

# Solana.py

To use the Solana API subscriptions with the solana.py library, install the asyncstdlib package with:

pip install asyncstdlib

# cURL

To use the Solana API subscriptions with cURL, use the code example as a message body in a WebSocket request in Postman.

Parameters:

  • <string> — the account public key as a base58 encoded string.
  • <object> — (optional) a configuration object containing the following optional fields:
    • commitment: <string> — (optional) the commitment.
    • encoding: <string> — the encoding for account data, either base58 (slow), base64, base64+zstd, or jsonParsed. base58 is limited to account data of less than 128 bytes. base64 will return base64 encoded data for account data of any size. base64+zstd compresses the account data using Zstandard and base64 encodes the result. jsonParsed encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If jsonParsed is requested, but a parser cannot be found, the field falls back to base64 encoding, detectable when the data field is <string> type.

Returns:

  • <number> — the subscription ID which is needed to unsubscribe.

Example:

  • Solana web3.js
  • Solana.py
  • cURL 
import { PublicKey, Connection } from "@solana/web3.js";

const web3 = new Connection("CHAINSTACK_HTTPS_URL", {
    wsEndpoint: "CHAINSTACK_WSS_URL",
  });

(async () => {
  const publicKey = new PublicKey(
    "HSH3LftAhgNEQmpNRuE1ghnbqVHsxt8edvid1zdLxH5C"
  );

  web3.onAccountChange(
    publicKey,
    (updatedAccountInfo) =>
      console.log("Updated account info: ", updatedAccountInfo),
    "confirmed"
  );
})();