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How to Get a Token Mint

In order to get the current supply, authority, or decimals a token has, you will need to get the account info for the token mint.

get-mint-account.ts

import { clusterApiUrl, Connection, PublicKey } from "@solana/web3.js";
import { getMint } from "@solana/spl-token";
 
(async () => {
  const connection = new Connection(clusterApiUrl("devnet"), "confirmed");
 
  const mintAccountPublicKey = new PublicKey(
    "8mAKLjGGmjKTnmcXeyr3pr7iX13xXVjJJiL6RujDbSPV",
  );
 
  let mintAccount = await getMint(connection, mintAccountPublicKey);
 
  console.log(mintAccount);
  /*
  {
    address: PublicKey {
      _bn: <BN: 7351e5e067cc7cfefef42e78915d3c513edbb8adeeab4d9092e814fe68c39fec>
    },
    mintAuthority: PublicKey {
      _bn: <BN: df30e6ca0981c1a677eed6f7cb46b2aa442ca9b7a10a10e494badea4b9b6944f>
    },
    supply: 0n,
    decimals: 8,
    isInitialized: true,
    freezeAuthority: PublicKey {
      _bn: <BN: df30e6ca0981c1a677eed6f7cb46b2aa442ca9b7a10a10e494badea4b9b6944f>
    }
  }
  */
})();