XMTP is a messaging protocol which helps you build apps that communicate with every wallet in the world, and we’re huge fans here at Dynamic! In this guide you’ll learn how to set up an example XMTP application using Dynamic as the authentication layer, and learn how it all works. The running version of what you’re about to build can be found here: https://xmtp-quickstart-reactjs.matthew18091.repl.co/

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Run the quickstart

All you’ll need to get going is a code editor and a terminal! When you’re ready, clone the official XMTP React quickstart, which ships with Dynamic: 
git clone https://github.com/fabriguespe/xmtp-quickstart-reactjs/
Navigate to the xmtp-quickstart-reactjs directory, and run npm i && npm run dev to install the dependencies and start the app. Open it up on whichever ports it displays for you, and you should see a simple app with a button that says “Connect Wallet”. Connect an Ethereum supported wallet i.e. Metamask, and you should see a new button called “Connect XMTP” appear. Click it, and you’ll be prompted to sign a message in your wallet. Those two steps could be combined into one for ease of use, but we’ve kept them separate here to show you how it works under the hood. That’s it! You’re authenticated and connected. You can now send messages to wallet addresses, and they’ll be able to see them in real time.

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How it works

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The Dynamic integration

Take a look in App.tsx and you’ll see that things get wrapped in DynamicContextProvider. This makes sure that Dynamic is available to your components. If you check the import for this provider at the top of the file, you’ll see it’s imported from sdk-react-core. This is important. The -core signifies that we are using the modular version of the SDK, where you pick and choose which chain/wallet providers you want to import and thus keep the bundle size as small as possible. This is why you’ll also see an EthereumWalletConnectors import, which is the Ethereum wallet connector from Dynamic. It’s passed in through the settings prop on the DynamicContextProvider, like this: 
 <DynamicContextProvider
    settings={{
        walletConnectors: [ EthereumWalletConnectors ]
    }}
>
As you can see, The other setting passed in is the environment ID for the Dynamic environment you want to use. You can find this in the developer section of the Dynamic dashboard but we’ve given you a default demo ID to get started with. Next take a look at the Home component, where you’ll find a lot of different XMTP functionality If you want to learn more, the docs detail the entire SDK and methods available: https://xmtp.org/docs/build/get-started

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What next?

Discover some of the advanced use cases XMTP and Dynamic can provide! You can find use case examples for XMTP here and Dynamic examples in the left hand nav here.