FarHack

Welcome to the ultimate Farcaster hackathon to learn how to build innovative Frames and Bots with XMTP. Happy coding 🫡

Prizes 🏆

🤖 Best use of an XMTP Bot with Farcaster - $500

This prize goes to the team that most effectively creates a Bot that uses Farcaster in a meaningful way.

Requirements:

Develop a Farcaster Bot using XMTP libraries

To create a new XMTP bot using BotKit cli tool:

npx create-xmtp-bot <bot-name>
cd <bot-name>

This is a code example of a bot that replies gm :

import { run, HandlerContext } from "@xmtp/botkit";

run(async (context: HandlerContext) => {
  // Get the message and the address from the sender
  const { content, senderAddress } = context.message;

  // Read or write to Farcaster

  // To reply, just call `reply` on the HandlerContext.
  await context.reply("gm");
});

Resources

• BotKit: Tooling for creating bots with XMTP.
• Tutorial: Learn how to build and deploy a bot.
• Conversational: Drive retention with conversations and subscriptions.
• GPT: Relay messages through Open AI APIs.

🖼️ Best Open Frame - $500

Open Frames is an interoperable standard that expands on the Frames specification. This prize goes to the best Farcaster Frame compatible with the Open Frame standard.

Requirements:

Integrate with Open Frames

Frameworks

Popular frameworks have already integrated Open Frames into their stacks:

• OnChainKit: Discover how OnchainKit seamlessly incorporates XMTP payloads.
  • Quickstart: Onchainkit quickstart that integrates XMTP.
• Frames.js: Learn about the integration of XMTP payloads within FrameJS.
  • Quickstart: Onchainkit quickstart that integrates XMTP.
• Frog: There is an active discussion to integrate Open Frames.

• Send your Frame through Converse to hi.xmtp.eth.

🔔 Best Use of XMTP to Send Notifications - $500

Implement a Frame or Bot that sends notifications through XMTP.

Requirements:

Send notifications using XMTP libraries

Install the js sdk:

yarn add @xmtp/xmtp-js ethers

Send notification:

import { Wallet } from "ethers";
import { Client } from "@xmtp/xmtp-js";

// Function to send a broadcast message to a list of recipients
async function sendNotification(recipient, message) {
  // In a real application, use your wallet
  const signer = new Wallet("private key");
  const xmtp = await Client.create(signer);

  // Check if the recipient is activated on the XMTP network
  if (await xmtp.canMessage(recipient)) {
    const conversation = await xmtp.conversations.newConversation(recipient);
    await conversation.send(message);
    console.log(`Message successfully sent to ${recipient}`);
  } else {
    console.log(`Recipient ${recipient} is not activated on the XMTP network.`);
  }
}
// Example usage
sendNotification("Hello from Farcaster!", "0x123...");

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Messaging apps 💬

Test the bots in messaging apps

• Converse: Own your conversations. Works with Frames (Frame Transactions TBA).
• Coinbase Wallet: Your key to the world of crypto. (Frame support TBA).
• dev-inbox: Web messaging client (Frame Transactions TBA).

Identities 🥷🏻

Learn about the 2 million identities part of XMTP by visiting the Dune dashboard.

Examples 🔥

See live examples in the Awesome XMTP ⭐️ repo.