We have been developing & improving smart accounts for over a year now. With over 1.5 Million Biconomy Smart Accounts deployed, we have been constantly pushing the envelope. As pioneers of account abstraction & flag bearers of superior web3 UX, Nexus is our latest & most advanced version of Modular Smart Accounts.

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Why Nexus - The most advanced Modular Smart Account

• Security - Nexus is highly audited and extensively tested to ensure every dapp that integrates it doesn’t need to worry about attacks via their smart account implementation. Thanks to rigorous audits by Spearbit & Cyfrin, two of the best in the business, devs can rest assured about security.
  
  
• Gas Optimised - We understand how important it is for devs to use smart accounts that utilise the least gas. Even small inefficiencies add up across tons of transactions. That’s why we have optimised our gas efficiency with the help of the industry expert - Gaslite
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• Minimal & Neutral Implementation- Nexus is a minimal & non-opinionated implementation. Thus, it gives a lot of flexibility to the developers without any lock-ins. Devs can iterate & pivot easily as per their business requirements.
  
  
• Modular - Nexus implements the 7579 modular interface, which works with a growing list of open sourced modules to tap into permissionless innovation. Devs can choose from a wide range of third party built modules to easily plug-in new capabilities.

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Nexus - The OS for Smart Accounts

‍Nexus acts as an Operating System of Smart Accounts. With Rhinestone’s ‘module store’ acting as the ‘app store’.

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What does this mean? DApps can integrate nexus as the vanilla implementation of smart accounts. It has all the basic ERC4337 functionalities (such as token paymaster, gasless via sponsorship paymaster, and social logins) PLUS the ability to install a wide range of additional functionalities as per the requirement. These additional features are called modules. You can easily plug them in just as easily as you install apps on your smartphone’s OS!

ERC-7579 + ERC-7484 = Secure Customization for any usecase

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Extending SA compatibilities with ERC-7579

Nexus is fully compatible and interoperable with any ERC-7579 compliant module, including those developed by non-Biconomy teams. This means DApps can leverage a broad range of modules to enhance their Nexus implementation. Need specific business logic for your DApp? Chances are, there’s already an ERC-7579 module that meets your needs. Simply find and plug it into your setup!

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For example, if you, as a DeFi DApp, has a unique requirement, you might discover that another DeFi project has already developed a corresponding ERC-7579 module. You can easily integrate this module into your own implementation. And if required, tweak minor additions rather than waste time re-inventing the hypothetical wheel.

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Here are some of the benefits:

• Reduced development effort and costs
• Faster development time for quicker launches
• Easily customise to offer the perfect user experience

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Ensuring Secure extensibility with Module Registry (ERC-7484)

As mentioned, Nexus enables developers to integrate ERC-7579 modules to extend capabilities of their Smart Accounts. And these ERC-7579 modules can be built by anyone. So it’s like a module marketplace with tons of options to choose from.

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But how do you know these modules are secure and will not rug your users? Adding third-party modules without proper vetting & checks can introduce significant security risks. Well, that’s where ERC-7484 comes in!

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Nexus adheres to the ERC-7484 standard, enabling developers to verify module security through a Registry Adapter before integration. The module registry provides essential security assurances, giving developers confidence in the safety of the modules they choose to install.

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