Mint

This guide explains how to mint additional supply to an existing SPL token using the Toolther interface at https://toolther.app/mint_token. It covers prerequisites, step-by-step actions, authority requirements, fees, and common errors.

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1. Prerequisites

• Connected wallet: Phantom, Solflare, Backpack, or Ledger (via Solflare).

• Network selected: Devnet or Mainnet. Ensure the wallet network matches the app network.

• You are the token’s current Mint Authority. If it was revoked or transferred, you cannot mint.

• Sufficient SOL for fees and rent-exempt adjustments if needed.

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2. Page Layout Reference

• Header: Connect Wallet button and navigation.

• Main card: “Select Token to Mint” with a refresh button and token selector.

• Helper notice: “No tokens found” with a suggestion to refresh.

• Right sidebar (desktop): Quick actions (Mint Tokens, Revoke Mint Authority, How to use?).

• Mobile menu: Create, Mint, Freeze, Update, Burn.

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3. Step-by-Step Minting

1. Connect your wallet

• Click “Connect Wallet” in the header and approve connection.

1. Choose network and explorer (optional)

• Ensure the network in the app matches your wallet network. Explorer choice only affects links shown after confirmation.

1. Load your tokens

• Click the refresh button in the “Select Token to Mint” card.

• If you see “Initializing network…”, wait a few seconds.

1. Pick the token

• Open the selector and choose the token where your connected wallet holds the Mint Authority.

1. Enter mint parameters

• Amount to mint: human-readable units (the app applies decimals automatically).

• Recipient address: defaults to your wallet. You may paste another recipient address or a token account.

• Optional: Create associated token account if the recipient does not have one.

1. Review and confirm

• Click “Mint” (or “Mint Tokens”).

• Approve the transaction in your wallet popup.

• Wait for confirmation; the page will show the signature and updated balance.

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4. Field Details and Validation

• Token selector: lists tokens where your wallet is mint authority (and possibly tokens discovered via RPC).

• Amount: must be a positive number. The app converts to base units using the token’s decimals.

• Recipient: a valid Solana address. If no associated token account exists, the app prompts to create one.

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5. Authorities and Safety

• Mint Authority is required to create new supply. If it is revoked or assigned to another key, minting fails.

• Consider best practice: after minting final supply, revoke mint authority to prevent future inflation.

• Freeze Authority (if present) does not affect minting, only account-level freezing.

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6. Troubleshooting

• No tokens found: Click refresh. Verify your wallet truly controls Mint Authority for the token. Confirm RPC/network.

• Disabled selector: The app may still be initializing or your wallet is not connected.

• Insufficient funds: Add SOL to cover fees, then retry.

• Invalid recipient: Check the address format and network (devnet vs mainnet).

• Mint failed after approval: Open the transaction in the explorer from the provided link to inspect logs.

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7. Programmatic Equivalent (TypeScript)

import { Connection, PublicKey, Keypair, sendAndConfirmTransaction } from "@solana/web3.js";
import { getMint, getOrCreateAssociatedTokenAccount, mintTo } from "@solana/spl-token";

async function mintExample(connection: Connection, mintPubkey: PublicKey, mintAuthority: Keypair, recipientOwner: PublicKey, amount: number) {
  const mint = await getMint(connection, mintPubkey);
  const ata = await getOrCreateAssociatedTokenAccount(connection, mintAuthority, mintPubkey, recipientOwner);
  const baseUnits = BigInt(amount) * BigInt(10 ** mint.decimals);
  const sig = await mintTo(connection, mintAuthority, mintPubkey, ata.address, mintAuthority.publicKey, Number(baseUnits));
  console.log("Signature:", sig);
}

Notes:

• amount is in human units; conversion uses on-chain mint.decimals.

• If your project uses Token-2022, ensure the correct program is targeted.

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8. Related Topics

• Revoke Mint Authority: see the action in the sidebar or the dedicated page.

• SPL vs Token-2022: understand compatibility and features before minting.

• Metadata updates: does not require mint authority; it uses update authority.

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9. Best Practices Checklist

• Verify you are on the correct network.

• Double-check amount and recipient before approving.

• Record the transaction signature for audit.

• Revoke mint authority when total supply is finalized.