Keyban JavaScript SDK

Overview

The Keyban JavaScript SDK provides the core functionality for Keyban's MPC wallet solution, simplifying the development of web and Node.js applications. It offers essential configurations, utilities, and functions that serve as the foundation for creating decentralized wallet experiences.

Key Features

• TypeScript Support: Fully typed to enhance code quality and development experience.
• Flexible Storage: Support for custom storage solutions, with built-in options coming soon.
• Blockchain Support: Supports Ethereum testnets and the Polygon Amoy testnet.
• ERC-20, ERC-721, and ERC-1155 Support: Transfer and interact with ERC-20 tokens and NFTs (ERC-721 and ERC-1155).
• Bundling: Efficiently bundled using tsup for optimized builds in development and production.

Installation

npm install @keyban/sdk-base

Basic Example

Initialize the SDK

import { KeybanClient, KeybanChain, KeybanAccount } from '@keyban/sdk-base';

const client = new KeybanClient({
  appId: "your-keyban-app-id",                 // Your Keyban application ID
  accessTokenProvider: async () => "access-token", // Function to provide the access token
  chain: KeybanChain.KeybanTestnet,            // Select the desired blockchain network
});

Retrieve Account Information

const account: KeybanAccount = await client.initialize();

Estimate Transaction Fees

const transferEstimate = await account.estimateTransfer("0xRecipientAddress", BigInt('1000000000000000000')); // 1 ETH in wei

Perform Token Transfer

await account.transfer("0xRecipientAddress", BigInt('1000000000000000000'));
console.log(`Transferred 1 ETH to 0xRecipientAddress`);

Retrieve ERC-20 Token Balances

const tokenBalances = await client.getTokenBalances(account.address);
console.log('ERC-20 Token Balances:', tokenBalances);

Perform ERC-20 Token Transfer

const erc20Estimate = await account.estimateERC20Transfer({
  contractAddress: "0xTokenContractAddress",   // ERC-20 contract address
  to: "0xRecipientAddress",                    // Recipient address
  value: BigInt('500000000000000000'),         // Amount to transfer (0.5 tokens in wei)
});
await account.transferERC20({
  contractAddress: "0xTokenContractAddress",
  to: "0xRecipientAddress",
  value: BigInt('500000000000000000'),
});
console.log(`Transferred 0.5 tokens to 0xRecipientAddress`);

Retrieve NFTs Owned by the Account

const nfts = await client.getNfts(account.address);
console.log('Owned NFTs:', nfts);

Perform NFT Transfer

const nftEstimate = await account.estimateNftTransfer({
  contractAddress: "0xNftContractAddress",
  to: "0xRecipientAddress",
  tokenId: BigInt(1),                          // Token ID
  standard: 'ERC721',                          // 'ERC721' or 'ERC1155'
});
await account.transferNft({
  contractAddress: "0xNftContractAddress",
  to: "0xRecipientAddress",
  tokenId: BigInt(1),
  standard: 'ERC721',
});
console.log(`Transferred NFT with Token ID 1 to 0xRecipientAddress`);

Supported Blockchains

The Keyban SDK supports the following blockchains:

• Keyban Testnet: KeybanChain.KeybanTestnet
• Polygon Amoy Testnet: KeybanChain.PolygonAmoy

Support for additional blockchains and mainnets will be introduced in future releases.

Custom Storage and Signing

Developers can define their own storage and signing strategies. The SDK offers flexibility with custom storage mechanisms, and future releases will bring more built-in storage options.

Documentation

For more detailed API references and advanced features, visit the official Keyban API Reference Portal.