rocketpool-liquid-staking

name	rocketpool-liquid-staking
description	Interact with Rocket Pool liquid staking contracts — deposit ETH to mint rETH, burn rETH for ETH, check exchange rates, query deposit pool balances, and perform rETH ERC-20 operations. Supports cast (Foundry CLI) and Ethereum MCP tools on mainnet and Hoodi testnet.

Rocket Pool — Liquid Staking

Quick Start

Query rETH Exchange Rate

cast call 0xae78736Cd615f374D3085123A210448E74Fc6393 "getExchangeRate()(uint256)" --rpc-url https://ethereum-rpc.publicnode.com

Deposit ETH to Mint rETH

cast send 0xCE15294273CFb9D9b628F4D61636623decDF4fdC "deposit()" --value 1ether --rpc-url $RPC_URL --private-key $PK

Check rETH Balance

cast call 0xae78736Cd615f374D3085123A210448E74Fc6393 "balanceOf(address)(uint256)" $WALLET --rpc-url https://ethereum-rpc.publicnode.com

Workflow

1. Look up the contract address from references/addresses.json
2. Find the function signature below
3. Load the ABI from assets/abis/<contractName>.json if needed for complex types
4. Execute via cast call (read) or cast send (write)

Network Configuration

Network	Chain ID	RPC	rocketStorage
Mainnet	1	https://ethereum-rpc.publicnode.com	0x1d8f8f00cfa6758d7bE78336684788Fb0ee0Fa46
Hoodi	560048	https://rpc.hoodi.ethpandaops.io	0x594Fb75D3dc2DFa0150Ad03F99F97817747dd4E1

Architecture

• RocketStorage is the central registry — all contracts resolve each other's addresses through it
• Contracts are upgradeable via governance; addresses in addresses.json reflect current deployments but can change
• All ETH values are in wei (18 decimals); all percentages are 18-decimal fixed point (1e18 = 100%)
• rETH is non-rebasing: balance stays constant, value increases via exchange rate

rocketDepositPool

Receives ETH deposits from users and routes them to node operators.

Functions

deposit() [payable]

Deposit ETH to mint rETH at the current exchange rate.

getBalance() → uint256 [view]
getExcessBalance() → uint256 [view]
getUserBalance() → int256 [view]
getNodeBalance() → uint256 [view]
getMaximumDepositAmount() → uint256 [view]

Queue inspection:

getTotalQueueLength() → uint256 [view]
getStandardQueueLength() → uint256 [view]
getExpressQueueLength() → uint256 [view]
getMinipoolQueueLength() → uint256 [view]

Node operator functions:

nodeDeposit(uint256 _bondAmount) [payable]
requestFunds(uint256 _bondAmount, uint32 _validatorId, uint256 _amount, bool _expressQueue)
exitQueue(address _nodeAddress, uint32 _validatorId, bool _expressQueue)
getNodeCreditBalance(address _nodeAddress) → uint256 [view]
withdrawCredit(uint256 _amount)
reduceBond(address _nodeAddress, uint256 _amount)
assignDeposits(uint256 _max)

Examples

cast call $DEPOSIT_POOL "getBalance()(uint256)" --rpc-url $RPC_URL
cast call $DEPOSIT_POOL "getMaximumDepositAmount()(uint256)" --rpc-url $RPC_URL
cast send $DEPOSIT_POOL "deposit()" --value 1ether --rpc-url $RPC_URL --private-key $PK

rocketTokenRETH

The rETH liquid staking token. Value accrues via an increasing exchange rate against ETH. Implements ERC-20.

Functions

Exchange rate:

getExchangeRate() → uint256 [view]
getEthValue(uint256 _rethAmount) → uint256 [view]
getRethValue(uint256 _ethAmount) → uint256 [view]
getCollateralRate() → uint256 [view]
getTotalCollateral() → uint256 [view]

Burn:

burn(uint256 _rethAmount)

Burns rETH and returns ETH at the current exchange rate. Reverts if insufficient collateral.

ERC-20:

balanceOf(address account) → uint256 [view]
transfer(address recipient, uint256 amount) → bool
transferFrom(address sender, address recipient, uint256 amount) → bool
approve(address spender, uint256 amount) → bool
allowance(address owner, address spender) → uint256 [view]
totalSupply() → uint256 [view]
name() → string [view]
symbol() → string [view]
decimals() → uint8 [view]

Examples

cast call $RETH "getExchangeRate()(uint256)" --rpc-url $RPC_URL
cast call $RETH "getRethValue(uint256)(uint256)" 1000000000000000000 --rpc-url $RPC_URL
cast call $RETH "getEthValue(uint256)(uint256)" 1000000000000000000 --rpc-url $RPC_URL
cast call $RETH "balanceOf(address)(uint256)" $WALLET --rpc-url $RPC_URL
cast send $RETH "burn(uint256)" $RETH_AMOUNT --rpc-url $RPC_URL --private-key $PK

Gotchas

• deposit() is on rocketDepositPool, not rocketTokenRETH
• burn() reverts if insufficient ETH collateral — check getTotalCollateral() first
• Exchange rate only increases; 18-decimal fixed point (1e18 = 1:1)
• There is a deposit delay (rethDepositDelay setting) before newly minted rETH can be transferred