The LAT protocol is composed of a set of core smart contracts that coordinate user deposits, token issuance, restaking delegation, and interaction with EigenLayer. Both users and the off-chain restaking manager interface with these contracts.

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Core Contracts Overview

ContractDescription
LiquidTokenERC-20 compliant contract that handles user deposits and withdrawals. It mints LAT tokens representing liquid staked positions and manages share-based accounting.
LiquidTokenManagerOversees the allocation of deposited assets across supported strategies. It interacts with StakerNodes and manages the addition/removal of supported assets.
StakerNodeCoordinatorFactory and registry for all StakerNode instances. Maintains upgrade paths, manages permissions, and links node infrastructure to the broader protocol.
StakerNodeContract representing an individual node that interacts with EigenLayer. It handles delegation, restaking, and withdrawal operations, while reporting back to the coordinator.

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Contract Details

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LiquidToken

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The LiquidToken contract is the user-facing entry point of the LAT protocol. It:
  • Accepts deposits of supported assets
  • Mints LAT tokens based on exchange rates from the TokenRegistry
  • Tracks user balances via a share-based accounting system
  • Enables redemption of LAT for underlying assets
  • Integrates standard ERC-20 behavior (transfer, approve, etc.)
Additional security features include:
  • Access control for critical functions
  • Pausability in case of system emergencies
  • Reentrancy protection to prevent attack vectors

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LiquidTokenManager

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The LiquidTokenManager orchestrates the flow of assets post-deposit. It:
  • Coordinates distribution of deposited assets across StakerNodes
  • Interfaces with the restaking manager for rebalancing decisions
  • Maintains the mapping between LAT-supported tokens and EigenLayer strategies
  • Provides public read functions for system-wide balance and configuration data
This contract serves as the control plane for reallocation and system-wide governance logic.

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StakerNode

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Each StakerNode contract acts as a delegate node that:
  • Interacts directly with EigenLayer to restake capital
  • Submits deposits, handles delegation logic, and manages withdrawal requests
  • Tracks staking rewards attributable to its assigned capital
  • Supports upgradeability via the StakerNodeCoordinator
StakerNodes are modular and independently upgradable, allowing for scalable deployment of restaked capital across strategies.

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StakerNodeCoordinator

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The StakerNodeCoordinator serves as the authoritative manager for all deployed StakerNode contracts. It:
  • Deploys and registers new StakerNode instances
  • Manages upgradability of existing nodes
  • Acts as a permissioned registry for contract role management
  • Ensures consistency and observability across the node infrastructure
By centralizing the lifecycle management of nodes, this contract ensures operational cohesion across the LAT restaking network.