Feature: Swap Authorization Form

[kamescg]

Context

The Universal wallet uses the MetaMask Delegation Framework for handling wallet delegations, authorizations and intents. The framework includes 20+ enforcer smart contract modules for dictating transaction execution capabilities.

The unique approach lends itself towards wallet level swap intents i.e. action authorizations.

Similar to the ERC-7683 standard proposed by Uniswap and Across.

As an aside, the Universal Wallet has an experimental ticket for integrating the two systems.

Scope

Create a swap form that lets user construct an Authorization Action, as described by the Delegation Classification System, to swap Token A for Token B.

The swap form should include fields to set token in/out amounts and fill deadlines. Similar to how swaps work on Uniswap.

Required Enforcers:

• ERC20BalanceGteEnforcer.sol
• LimitedCallsEnforcer.sol
• TimestampEnforcer.sol or BlockNumberEnforcer.sol

Core Logic

Use ERC20BalanceGteEnforcer.sol to define the swap ratio for Token A and Token B.

Example:

• I have 1,000 USDC
• I want 500 aUSDC

Conditions:

• ERC20BalanceGteEnforcer: USDC balance >= 500
• ERC20BalanceGteEnforcer: aUSDC balance >= 499.50

Result:

• Authorization to swap 500 USDC for a minimum of 499.50 aUSDC

Supporting Logic

Use the LimitedCallsEnforcer to limit execution to 1 redemption.

Use TimestampEnforcer.sol or BlockNumberEnforcer.sol enforcers to set a fill deadline i.e. 10 mins or less.

Outcome

The swap authorizations do not need to execute.

For now the authorizations can be saved in apps/api-delegations service and later broadcast to a filler/solver network.

The delegation type should be SwapAuthorization and added to the Delegations Classification System.