Create Market

Harcoded addresses

For a market to be displayed on the LFJ website, it needs to be created using the official config stated in the deployment addresses section.

const config = new PublicKey("LFJxVxETTXwoxuuFCpqj3KihrYxmJc7maQFg4UjHZ3r");

The official config is using WSOL as the quote token.

const wSol = new PublicKey("So11111111111111111111111111111111111111112");

We will use the Metaplex Metadata program for the token metadata.

const metaplexMetadata = new PublicKey(
  "metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s"
);

Some creation parameters that can be customized.

const name = "Test Market";
const symbol = "TEST";
const uri = "https://example.com/metadata.json";
// - Swap authority: Swaps can be restricted, requiring the signature of the swap authority to execute swaps
const swapAuthority = null;

Token address

The token address can be generated randomly or mined using solana-keygen grind.

const baseTokenMint = Keypair.generate();

The token metadata account address needs to be computed.

const token0Metadata = PublicKey.findProgramAddressSync(
  [
    Buffer.from("metadata"),
    metaplexMetadata.toBuffer(),
    baseTokenMint.publicKey.toBuffer(),
  ],
  metaplexMetadata
)[0];

Anchor will compute for us all the required ATAs.

Transaction

const connection = new anchor.web3.Connection(
  process.env.RPC_URL ?? ""
);

const wallet = anchor.Wallet.local();

const program = new Program<TokenMillV2>(TokenMillIdl as any, {
  connection,
});

const tx = await program.methods
  .createMarket(name, symbol, uri, swapAuthority)
  .accountsPartial({
    tokenMillConfig: config,
    tokenMint0: baseTokenMint.publicKey,
    token0Metadata,
    tokenMint1: wSol,
    creator: wallet.publicKey,
  })
  .signers([wallet.payer, baseTokenMint])
  .transaction();

const txSignature = await connection.sendTransaction(tx, [
  wallet.payer,
  baseTokenMint,
]);

await connection.confirmTransaction(txSignature);