Module Registry



The goal of the Module Registry is to unlock open innovation within modular smart accounts through a decentralised trust delegation mechanism (as discussed in our blog post). It looks to solve the new security concerns that arise from modularising smart accounts by allowing trusted entities, like auditors, to make statements about the security of smart account modules. Users can then query these statements on-chain in order to be sure that a module they are about to install or use is still secure.

Specifically, the Module Registry is a list of (security) statements about modules, which we call attestations. These attestations are made by trusted entities, called attesters, and are stored on-chain. The Module Registry also provides a gas efficient way for users to query these attestations on-chain in order to use them to make decisions about whether to install or use a module. The Module Registry is a public good that is open, permissionless and free to use and build on top of.

The Module Registry is currently in alpha and active development. Do not use the contracts in production.

Core concepts


Modules are smart contracts that hold self-contained features for smart accounts. These module addresses and their deployment metadata are stored on the Registry, allowing attesters to make onchain assertions about the modules that can then be queried by integrated accounts.

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Attestations are onchain assertions made by an entity (attester) about modules. Each attestation consists of two primary elements: the schema and the attestation data.

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Schemas are predefined structures utilized for the creation and verification of attestation data. They allow attesters to use different attestation formats for different use cases, making the Module Registry unopinionated towards how attestation data needs to look.

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Attesters are individuals or organizations responsible for creating and signing attestations. They publish the attestation on-chain to be stored on the Registry and queried by users.

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High level architecture

The Module Registry is a single contract that can be extended to support custom flows. For example, a Schema Validator can extend the Module Registry to verify that Attestations made on a specific Schema adhere to its' definitions. A Resolver can introduce custom logic to, for example, enforce monetization when making an Attestation or pay out a bounty when revoking an Attestation. For readability, the Module Registry contract is broken down into multiple sub-contracts that are grouped by their domains. The 4 key domains are:

  • Schema: Manages Schemas and Resolvers.
  • Module: Manages module deployment, registration and fetching.
  • Attestation: Manages attestations and revocations for modules.
  • Query: Manages the querying of the Module Registry for attestations.

This section of the documentation has been set up to mirror these domains, so that each domain has its' own page. Read on for an exaplanation of each domain and or check out the Module Registry repository to jump right into the code.