Interchain SDK

Send cross-chain messages and transfer tokens between Avalanche chains and subnets

Overview

The Interchain SDK enables cross-chain communication on Avalanche. Send messages and transfer ERC20 tokens between Avalanche C-Chain and subnets using the Teleporter protocol.

Key Features:

Interchain Messaging (ICM) - Send arbitrary messages across chains
Interchain Token Transfers (ICTT) - Transfer ERC20 tokens between chains
Warp Messages - Parse and build Warp protocol messages
Type-safe - Full TypeScript support with IntelliSense

Quick Start

import { createAvalancheWalletClient } from "@avalanche-sdk/client";
import { privateKeyToAvalancheAccount } from "@avalanche-sdk/client/accounts";
import { createICMClient } from "@avalanche-sdk/interchain";
import { avalancheFuji, dispatch } from "@avalanche-sdk/interchain/chains";

// Setup wallet
const account = privateKeyToAvalancheAccount("0x...");
const wallet = createAvalancheWalletClient({
  account,
  chain: avalancheFuji,
  transport: { type: "http" },
});

// Create ICM client
const icm = createICMClient(wallet);

// Send message
const hash = await icm.sendMsg({
  sourceChain: avalancheFuji,
  destinationChain: dispatch,
  message: "Hello from Avalanche!",
});

What's Next

Getting Started

Install and configure the SDK

Interchain Messaging

Send messages across chains

Token Transfers

Transfer ERC20 tokens cross-chain

Warp Messages

Parse and build Warp protocol messages