A development kit for building smart account modules

ModuleKit aims to make it simple for any developer to build a module that works across all ERC-7579 compliant accounts, including Safe, ZeroDev’s Kernel V3, Biconomy’s Nexus, and many more.

ModuleKit has several tools to help during the development lifecycle of a module:

Build

  • Standardized interfaces and templates: These ensure that your module is compatible with all the major account implementations and that it’s extremely easy to get started.
  • Third-party integrations: ModuleKit has a library of integrations and pre-built conditions for execution to make building powerful modules seamless.

Test

  • Testing frameworks: These are out-of-the-box testing setups with in-built unit and integration tests. They allow developers to easily test modules against different account implementations and abstract away the complexities of the entire ERC-4337 flow.
  • Helper utilities: These utilities improve the developer experience, such as calculating gas consumption (including on L2s) and validating that a module conforms to the ERC-4337 rules.

Deploy

  • Deployment script: The ModuleKit comes with a helper contract that allows you to easily deploy a module and register it in the Module Registry.

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Supported Accounts

ERC-7579

Nexus

Kernel

Safe

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Supported Module Types

  • Validators: determine whether a transaction is valid and should be executed
  • Executors: create executions on the account with custom logic
  • Hooks: enforce conditions or execute logic pre- or post-execution
  • Fallbacks: extend the account logic to add more functionality into the account

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Useful starting resources