Getting Started using JavaScript

Metaplex provides a JavaScript library that can be used to interact with Candy Machines. Thanks to the Umi framework, it ships without many opinionated dependencies and, thus, provides a lightweight library that can be used in any JavaScript project.

To get started, you'll need to install the Umi framework and the Candy Machine JavaScript library.

npm install \
  @metaplex-foundation/umi \
  @metaplex-foundation/umi-bundle-defaults \
  @solana/web3.js \
  @metaplex-foundation/mpl-candy-machine

Next, you may create your Umi instance and install the mplCandyMachine plugin like so.

import { createUmi } from '@metaplex-foundation/umi-bundle-defaults'
import { mplCandyMachine } from '@metaplex-foundation/mpl-candy-machine'

// Use the RPC endpoint of your choice.
const umi = createUmi('http://127.0.0.1:8899').use(mplCandyMachine())

Then you want to tell Umi which wallet to use. This can either be a keypair or the solana wallet adapter.

That's it, you can now interact with NFTs by using the various functions provided by the library and passing your Umi instance to them. Here's an example of fetching a candy machine account and its associated candy guard account.

import { publicKey } from '@metaplex-foundation/umi'
import {
  fetchCandyMachine,
  fetchCandyGuard,
} from '@metaplex-foundation/mpl-candy-machine'

const candyMachinePublicKey = publicKey('...')
const candyMachine = await fetchCandyMachine(umi, candyMachinePublicKey)
const candyGuard = await fetchCandyGuard(umi, candyMachine.mintAuthority)

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