Modules

Modules are smart contracts that extend the functionality of the 0xSplits protocol. They exist as independent contracts, and operate either above or below the protocol.

Above the protocol modules execute logic before tokens are sent to the Split. This means tokens must be sent to the module directly instead of the Split. For example, a Vesting Module vests tokens before sending the vested portion to a Split. Tokens are first sent to the Mesting Module and then to the Split.

Below the protocol modules execute logic after tokens have been sent to a Split. For example, a Pointer Module allows a Split Recipient to match whatever account owns a specific NFT. When the NFT changes hands, the Recipient in the Split is updated. In this case, tokens are still sent to the Split directly; the logic only impacts how tokens are distributed within the Split.

  ┌ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ┐

  │            "Above the Protocol"             │
            Logic happens here, before
  │        tokens are sent to the Split         │

  └ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ┘
                         │
                         │
                         ▼
  ┌─────────────────────────────────────────────┐
  │                                             │
  │            SPLIT SMART CONTRACT             │
  │                                             │
  └─────────────────────────────────────────────┘
                         │
                         │
                         ▼
  ┌ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ┐

  │            "Below the Protocol"             │
         Logic happens here, after tokens
  │          are received by the Split          │

  └ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ┘

Building Modules#

Anyone can create modules since they exist independently of the protocol. They're made possible due to the protocol's composability in three key areas:

1. Receiving tokens: each Split is a payable smart contract that can receive funds from any other account via send, transfer, or call.
2. Withdrawing tokens: each Recipient can be an EOA or smart contract for which third parties may execute withdrawals.
3. Modifying recipients: the Controller of a Mutable Split can also be an EOA or smart contract with custom logic, allowing Split recipients to be programatically updated.

All modules highlighted in these docs started as ideas from the community. We'd love to see the modules you create and learn about the modules you need. Please drop us a note in the #dev-support channel in Discord if you have questions or want to discuss ways to integrate your modules into the app.