🍓 Ichigo SDK

Web3 Wallet SDK - Using AA (ERC-4337) and WebAuthn (PassKeys).

Features:

• Fully customisable UI
• Integrated Paymaster support - Alchemy, Stackup, Custom.
• No Extensiosn, No new apps necessary - Works directly into browser
• Batch operations
• Easy to use
• Secured by web standard WebAuthn - Trusted by companies like Apple & Google.

Notes

Few important notes:

• Users are identified by username - unique string
• Each username has its own unique account address
• Passkeys are used for authentication.
• username is connected to the specific Passkey. The user who owns the Passkey, owns the account.
• AA wallet is created on the first write operation. However you can always get the wallet address by username.

Current limitations

• Chain: Base Sepolia
• Browsers: Chrome, Brave

Initialization

Using Alchemy paymaster and bundler:

import { IchigoSDK } from "ichigo-sdk";

/**
 * You can get RPC URL and PolicyID from Alchemy Dashboard:
 * https://dashboard.alchemy.com/apps
 * https://dashboard.alchemy.com/gas-manager
 */

const RPC_URL =
  "https://base-sepolia.g.alchemy.com/v2/JOMsB_RG7ymuGmGM1NqlFRXuwYJ1E1Yh";
const POLICY_ID = "ae7829c6-25de-4150-9cc8-274d53bf209a";

export const sdk = new IchigoSDK({
  rpc: RPC_URL,
  paymaster: {
    type: "ALCHEMY",
    policyId: POLICY_ID,
    rpc: RPC_URL,
  },
});

Mint

Mint NFT (ERC721):

await sdk.mint({
  type: "ERC721",
  contractAddress: "0x10bb2Ee7761C2356F7D7e42311b0fDf8e5e4dCA1",

  username: "user_unique_username", // passkey will be attached to the username
});

Mint ERC20:

await sdk.mint({
  type: "ERC20",
  contractAddress: "0x72788aAd0e291cDC498dd814dE76c34ae2d46a39",

  username: "user_unique_username",
});

Transfer

Transfer NFT (ERC721):

await sdk.transfer({
  type: "ERC721",
  contractAddress: "0x10bb2Ee7761C2356F7D7e42311b0fDf8e5e4dCA1",
  toAddress: "0x91D76D31080ca88339a4E506aFfB4dED4b192bCb",
  id: 117,

  username: "user_unique_username",
});

Transfer ERC20:

await sdk.transfer({
  type: "ERC20",
  contractAddress: "0x10bb2Ee7761C2356F7D7e42311b0fDf8e5e4dCA1",
  toAddress: "0x91D76D31080ca88339a4E506aFfB4dED4b192bCb",
  count: 7,

  username: "user_unique_username",
});

Batch Call (Custom)

Low-level api to implement any smart contract call(s) into a single transaction:

const toAddress = "0x91D76D31080ca88339a4E506aFfB4dED4b192bCb";
const count = 7;

await sdk.batchCall(
  [
    {
      contractAddress: "0x10bb2Ee7761C2356F7D7e42311b0fDf8e5e4dCA1",
      fnName: "transfer",
      args: () => [toAddress, count], // function arguments
      abi: [/* ABI goes here */],
    },
  ],
  {
    username: "user_unique_username",
  }
);

Utility

You can always get the wallet address of any username. It will not do any operation on-chain.

const walletAddress = await sdk.getWalletAddress("user_unique_username");