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zksync-sso

v0.0.0-beta.2

Published

ZKsync Smart Sign On SDK

Downloads

132

Readme

zksync-sso SDK

License CI

A user & developer friendly modular smart account implementation on ZKsync; simplifying user authentication, session management, and transaction processing.

Features and Goals

[!CAUTION] ZKsync SSO is under active development and is not yet feature complete. Use it to improve your development applications and tooling. Please do not use it in production environments.

  • 🧩 Modular smart accounts based on ERC-7579
  • 🔑 Passkey authentication (no seed phrases)
  • ⏰ Sessions w/ easy configuration and management
  • 💰 Integrated paymaster support
  • ❤️‍🩹 Account recovery (Coming Soon)
  • 💻 Simple SDKs : JavaScript, iOS/Android (Coming Soon)
  • 🤝 Open-source authentication server
  • 🎓 Examples to get started quickly

Getting started

Install the ZKsync SSO SDK package:

npm i zksync-sso

Add ZKsync SSO connector to your app (using wagmi):

import { zksyncSepoliaTestnet } from "viem/chains";
import { createConfig, connect } from "@wagmi/core";
import { zksyncSsoConnector } from "zksync-sso/connector";

const ssoConnector = zksyncSsoConnector({
  // Optional session configuration,
  // if omitted user will have to sign every transaction via Auth Server
  session: {
    // Allow up to 0.1 ETH to be spend in gas fees
    feeLimit: parseEther("0.1"),

    transfers: [
      // Allow ETH transfers of up to 0.1 ETH to specific address
      {
        to: "0x188bd99cd7D4d78d4E605Aeea12C17B32CC3135A",
        valueLimit: parseEther("0.1"),
      },

      // Allow ETH transfers to specific address with a limit of 0.1 ETH per hour
      // until the session expires
      {
        to: "0x188bd99cd7D4d78d4E605Aeea12C17B32CC3135A",
        valueLimit: {
            limit: parseEther("0.1"),
            period: BigInt(60 * 60), // 1 hour in seconds
        },
      },
    ],

    // Allow calling specific smart contracts (e.g. ERC20 transfer):
    contractCalls: [
      {
        address: "0xa1cf087DB965Ab02Fb3CFaCe1f5c63935815f044",
        function: "transfer(address,uint256)",

        // Optional call constraints (unconstrained otherwise):
        constraints: [

          // Only allow transfers to this address
          {
            index: 0,
            condition: "Equal",
            refValue: pad("0x6cC8cf7f6b488C58AA909B77E6e65c631c204784"),
          },

          // Transfer up to 0.2 tokens
          {
            index: 1,
            limit: parseUnits("0.2", TOKEN.decimals), // Unlimited if omitted
          },
        ],
      },
    ],
  },
});

const wagmiConfig = createConfig({
   connectors: [ssoConnector],
   ..., // your wagmi config https://wagmi.sh/core/api/createConfig
});

const connectWithSSO = () => {
   connect(wagmiConfig, {
      connector: ssoConnector,
      chainId: zksyncSepoliaTestnet.id, // or another chain id that has SSO support
   });
};

Find more information here in our docs.