Sol Fixed Fee Guard

The Sol Fixed Fee guard charges the payer a fixed amount in SOL when minting from a Core Candy Machine, transferring the fee to a configured destination wallet.

Overview

The Sol Fixed Fee guard allows us to charge the payer an amount in SOL when minting. Both the amount of SOL and the destination address can be configured. It works similar to the Sol Payment Guard.

Guard Settings

The Sol Payment guard contains the following settings:

• Lamports: The amount in SOL (or lamports) to charge the payer.
• Destination: The address of the wallet that should receive all payments related to this guard.

create(umi, {
  // ...
  guards: {
    solFixedFee: some({
      lamports: sol(1.5),
      destination: umi.identity.publicKey,
    }),
  },
});

Mint Settings

The Sol Fixed Fee guard contains the following Mint Settings:

• Destination: The address of the wallet that should receive all payments related to this guard.

Note that, if you're planning on constructing instructions without the help of our SDKs, you will need to provide these Mint Settings and more as a combination of instruction arguments and remaining accounts. See the Core Candy Guard's program documentation for more details.

mintV1(umi, {
  // ...
  mintArgs: {
    solFixedFee: some({ destination: treasury }),
  },
});

Route Instruction

The Sol Fixed Fee guard does not support the route instruction.

Notes

• The Sol Fixed Fee guard requires the destination wallet address to be provided in both the guard settings and the mint settings.
• The fee amount is specified in lamports. Use the sol() helper to convert SOL to lamports (e.g., sol(1.5) equals 1,500,000,000 lamports).
• This guard works similarly to the Sol Payment guard. The key difference is that Sol Fixed Fee is designed for flat fee collection scenarios.