@axelar-network/axelar-gmp-sdk-solidity

What is @axelar-network/axelar-gmp-sdk-solidity?

The @axelar-network/axelar-gmp-sdk-solidity package is a software development kit designed to facilitate cross-chain communication and interoperability using the Axelar Network. It provides tools and functionalities for developers to build decentralized applications that can interact across different blockchain networks seamlessly.

What are @axelar-network/axelar-gmp-sdk-solidity's main functionalities?

Cross-Chain Message Passing

This feature allows developers to send messages between different blockchain networks. The code sample demonstrates how to use the AxelarGMPClient to send a message from Ethereum to Binance Smart Chain.

const { AxelarGMPClient } = require('@axelar-network/axelar-gmp-sdk-solidity');

async function sendMessage() {
  const client = new AxelarGMPClient();
  const tx = await client.sendMessage({
    fromChain: 'Ethereum',
    toChain: 'BinanceSmartChain',
    payload: 'Hello, cross-chain world!'
  });
  console.log('Transaction:', tx);
}
sendMessage();

Token Transfer

This feature enables the transfer of tokens across different blockchain networks. The code sample shows how to transfer USDC tokens from Ethereum to Polygon using the AxelarGMPClient.

const { AxelarGMPClient } = require('@axelar-network/axelar-gmp-sdk-solidity');

async function transferToken() {
  const client = new AxelarGMPClient();
  const tx = await client.transferToken({
    fromChain: 'Ethereum',
    toChain: 'Polygon',
    token: 'USDC',
    amount: '100'
  });
  console.log('Token Transfer Transaction:', tx);
}
transferToken();

Other packages similar to @axelar-network/axelar-gmp-sdk-solidity

wormhole-sdk

The wormhole-sdk is a cross-chain interoperability protocol that allows for the transfer of assets and data across different blockchain networks. It is similar to @axelar-network/axelar-gmp-sdk-solidity in that it facilitates cross-chain communication, but it focuses more on providing a decentralized bridge for token transfers and data messaging.

connext

Connext is a protocol for fast, low-cost, and trust-minimized cross-chain communication. It provides similar functionalities to @axelar-network/axelar-gmp-sdk-solidity by enabling developers to build applications that can interact across multiple blockchains. Connext emphasizes speed and cost-efficiency in its cross-chain transactions.

README

Axelar GMP SDK Solidity

General Message Passing Development Kit

This repository contains all the necessary ingredients for successful cross-chain development utilizing the Axelar General Message Passing protocol.

Installation

$ npm install @axelar-network/axelar-gmp-sdk-solidity

Documentation

• Introduction
• General Message Passing
• Build
• Video

Available contracts

AxelarExecutable

Base interface for validating and executing GMP contract calls.

ExpressProxy and ExpressExecutable

Interface that allows to expedite GMP calls by lending assets and performing execution before it fully propagates through the Axelar network.

Create3Deployer and ConstAddressDeployer

These contracts are used to deploy your Executable to have the same address on different EVM chains. This simplifies message validation from peer Executables. You can learn more in the documentation.

Proxy and Upgradable

Base implementation of upgradable contracts designed to be deployed with Create3Deployer and to have the same Proxy address on different EVM chains.

TokenLinker and NTFLinker

Allows developers to create their own cross-chain gateways for ERC20 and ERC721 tokens utilizing the GMP protocol. Also it's a great example how to use AxelarExecutable with Upgradable.

StringAddressUtils

Allows conversion between string and address data types

StringBytesUtil

Allows conversion between string and bytes32 data types for storing strings under 31 bytes into a single storage slot