Can I use the meta plex js SDK to update SPL token meta data?

Question

I am creating a token mint and was wondering, if i can use the meta plex sdk to upload meta data for it.

I am trying like this.

const mint = await createMint(
  pg.connection,
  pg.wallet.keypair,
  mintAuthority.publicKey,
  freezeAuthority.publicKey,
  9 // We are using 9 decimals to match the CLI decimal default exactly
);

const metaplex = new Metaplex(pg.connection);

const nft = await metaplex.nfts().findByMint({
  mintAddress: mint,
});

const updateResult = await metaplex.nfts().update({
  nftOrSft: nft,
  uri: "https://shdw-drive.genesysgo.net/AzjHvXgqUJortnr5fXDG2aPkp2PfFMvu4Egr57fdiite/PirateCoinMeta",
});

But getting this error:

Uncaught error: The account of type [e] was not found at the provided address [Cp1pypMrwZ5Ba6K6NuQKmPvWQjH46erCSe4gKkUn3ect].

The error doesnt tell me much. Maybe I can only use that function with an NFT that was created with the metaplex sdk which creates some extra accounts?

I can use the createCreateMetadataAccountV3Instruction instruction from '@metaplex-foundation/mpl-token-metadata' but I wanted to see if I can also do that without it.

Answer 1

Ok, I gave up. Now im just using the createSFT function from metaplex instead:

Here is the solution:

import { keypairIdentity, token, Metaplex } from "@metaplex-foundation/js";

const metaplex = new Metaplex(pg.connection).use(
  keypairIdentity(pg.wallet.keypair)
);

const createdSFT = await metaplex.nfts().createSft({
  uri: "https://shdw-drive.genesysgo.net/AzjHvXgqUJortnr5fXDG2aPkp2PfFMvu4Egr57fdiite/PirateCoinMeta",
  name: "Gold",
  sellerFeeBasisPoints: 100,
  updateAuthority: mintAuthority,
  mintAuthority: mintAuthority,
  decimals: 9,
  tokenStandard: "Fungible",
  symbol: "GOLD",
  isMutable: true,
});

let mintResult = await metaplex.nfts().mint({
  nftOrSft: createdSFT.sft,
  authority: pg.wallet.keypair,
  toOwner: pg.wallet.keypair.publicKey,
  amount: token(100 * mintDecimals),
});

Answer 2

When updating, you don't need to create a new mint. Rather you just need to update the current mint. You should be able to do this by...

const sft = metaplex.nfts().findByMint({mint: mintPubkeyOfToken})

const update = metaplex.nfts().update({
nftOrSft: sft,
uri: "your uri"
})

Creating a mint isn't actually creating a sft/nft or the metadata accounts... Looks like you've moved on, but if they token is already created, above should help to update the current metadata.