This guide will help you start building/modifying your EVM frontend with TAC SDK. You’ll learn how to set up the SDK and make your first cross-chain transaction that will trigger your solidity code deployed on TAC.

1

Installation

Install the TAC SDK using npm:

npm install tac-sdk

Once you’ve installed the SDK, you can start building. Here’s a basic setup to get you started:

2

Import dependencies

import { TacSdk } from "tac-sdk";
import { TonConnectUI } from "@tonconnect/ui";
import { ethers } from "ethers";
3

Initialize TON Connect

const tonConnectUI = new TonConnectUI({
  manifestUrl: "YOUR_MANIFEST_URL",
});
4

Create a TAC SDK instance

const tacSdk = new TacSdk({
  network: "TESTNET", // Use "MAINNET" for production
});
5

Making Your First Cross-Chain Transaction

Here’s a simple example of making a cross-chain transaction:

// 1. Encode your parameters using ethers
const abi = new ethers.AbiCoder();
const encodedParameters = abi.encode(
  ["address", "uint256"],
  [targetAddress, amount]
);

// 2. Set up transaction parameters
const params = {
  fromAddress: "YOUR_TON_ADDRESS",
  jettonAmount: 100,
  proxyMsg: {
    evmTargetAddress: "EVM_CONTRACT_ADDRESS",
    methodName: "transfer(address,uint256)",
    encodedParameters: encodedParameters,
  },
  tokenAddress: "TON_TOKEN_ADDRESS",
  tonConnect: tonConnectUI,
};

// 3. Send the transaction
await tacSdk.sendJettonWithProxyMsg(params);

​
API Endpoints

You can use these public endpoints for development:

IntroductionSharded Messages