Assigning Metadata to Fungible SPL Tokens?

Question

Hello Solana community,

I'm facing issues assigning metadata (name, ticker, image) to a standard SPL token on the devnet. I've tried the following without success:

Metaboss @metaplex/js ; @metaplex-foundation/js ; @metaplex-foundation/mpl-token-metadata Are there any recommended libraries, SDKs, or CLI tools specifically for assigning metadata to standard SPL tokens? I'm open to any solutions, but would prefer one that I can implement independently, not relying on external platforms like Dexlab's MintingLab or Smithii's Solana Token Creator.

Any help would be greatly appreciated!

Thank you,

Answer 1

the way I read it, you need a very basic functionality for your tokens, so I think you can do this already with the new token program on Solana without relying on 3rd party tools. The token 22 program is pretty amazing.

https://spl.solana.com/token-2022

Answer 2

I recently built a simple vue.js app that can create spl token with metadata. Please check this site. https://solana-create-spl-token.vercel.app/ This works well on mainnet, devnet. I hope you find the following script snippet helpful.

import {Connection, LAMPORTS_PER_SOL, PublicKey, Transaction, SystemProgram, Keypair, TransactionSignature} from @solana/web3.js
import { PROGRAM_ID, createCreateMetadataAccountV3Instruction } from '@metaplex-foundation/mpl-token-metadata'
import { MINT_SIZE, AuthorityType, TOKEN_PROGRAM_ID, createSetAuthorityInstruction, getMinimumBalanceForRentExemptMint, createInitializeMintInstruction, getAssociatedTokenAddress, createAssociatedTokenAccountInstruction, createMintToInstruction } from '@solana/spl-token';

...

const mintKeypair = Keypair.generate();
const tokenATA = await getAssociatedTokenAddress(mintKeypair.publicKey, publicKey.value);
const metadata = PublicKey.findProgramAddressSync(
    [
        Buffer.from("metadata"),
        PROGRAM_ID.toBuffer(),
        mintKeypair.publicKey.toBuffer(),
    ],
    PROGRAM_ID,
)[0];
const createMetadataInstruction = createCreateMetadataAccountV3Instruction(
    {
        metadata: metadata,
        mint: mintKeypair.publicKey,
        mintAuthority: publicKey.value,
        payer: publicKey.value,
        updateAuthority: publicKey.value,
    },
    {
        createMetadataAccountArgsV3: {
            data: {
                name: tokenName.value,
                symbol: tokenSymbol.value,
                uri: metadataUri.value,
                creators: null,
                sellerFeeBasisPoints: 0,
                uses: null,
                collection: null,
            },
            isMutable: !immutable.value,
            collectionDetails: null,
        },
    },
);