> For the complete documentation index, see [llms.txt](https://docs.mantle.xyz/meth/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mantle.xyz/meth/introduction/overview.md).

# Overview

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**Status (Liquidity Buffer)**: **Live, capped production testing**
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## Description

**mETH Protocol** is a permissionless, vertically integrated protocol for ETH liquid staking (with liquidity buffers in Aave) and liquid restaking, available at <https://www.methprotocol.xyz/>.

## Key Points

**mETH Staking**\
mETH is a value-accumulating receipt token for ETH staking. Users can redeem mETH for the underlying principal and accumulated ETH rewards. It is a straightforward product with risk-reward profile associated with Ethereum 2.0 validation services.\
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**mETH Liquidity Buffer**\
Since 2025-10-24, the protocol has implemented the Liquidity Buffer, feature which maintains non-staked ETH to meet redemption requests and deposits this ETH deposited into blue-chip lending protocols such as AAVE main markets to maintain yield. Without this feature, withdrawal requests could take as much as 50 days.\
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**cmETH**\
cmETH is a 1:1 receipt token for mETH restaking across a portfolio of positions, including EigenLayer  and associated Actively Validated Services. Rewards accrue in multiple third-party assets, which users can claim periodically.\
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**cmETH Unified Receipt Token**\
cmETH is a unified receipt token for a portfolio of restaking positions, providing users with a convenient way to participate in the risk-reward profile of restaking.\
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**cmETH Omnichain**\
cmETH utilizes the LayerZero OFT standard, providing added convenience to users by enabling fast bridging between chains within minutes and without slippage.\
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**Capital Efficiency**\
Both mETH and cmETH can be leveraged across a range of DeFi and centralized applications (with deeper partnership with Bybit), such as collateral for money markets or perpetual trading.\
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**COOK**\
COOK is the governance token for mETH Protocol.\
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**Opt-in**\
Users opt in to their desired risk-reward profile by choosing to hold either mETH or cmETH. mETH does not assume restaking risk. cmETH incorporates the risk-reward profile of mETH and adds the risk-reward profile of restaking.

## Product Information

### mETH

<table><thead><tr><th width="202.99995930989581">Item</th><th>Description</th></tr></thead><tbody><tr><td>Rewards</td><td><ul><li>Weighted average rewards from the Staking component and Liquidity Buffer component (see below).</li><li>Realized in ETH upon redemption</li><li><a href="https://app.methprotocol.xyz/stats/meth/apy">https://app.methprotocol.xyz/stats/meth/apy</a></li></ul></td></tr><tr><td>Risks</td><td><ul><li>Combined risks of the Staking component and Liquidity Buffer component (see below).</li></ul></td></tr><tr><td>Protocol Fee</td><td><ul><li>Weighted average of protocol fees of the Staking component and Liquidity Buffer component.</li><li>Approximately 10% of rewards.</li></ul></td></tr><tr><td>Vault Access</td><td><ul><li>Ethereum L1</li></ul></td></tr><tr><td>Deposits / Stake</td><td><ul><li>Permissionless</li><li>Instant</li><li>4bps fee (risk management mechanism, see <a href="https://docs.mantle.xyz/meth/concepts/risk-management/unstake-griefing#mitigation">Adjustment Rate</a>)</li></ul></td></tr><tr><td>Withdrawals / Unstake</td><td><ul><li>Permissionless</li><li>FIFO queue mechanism</li><li>Minimum 12-hour delay (risk management mechanism)</li><li>Maximum delay depends on Liquidity Buffer ETH (which is immediately available) , and <a href="https://www.validatorqueue.com/">Ethereum Validator Queue</a> (which could take 40+ days).</li><li>No fees</li></ul></td></tr><tr><td>Bridging</td><td><ul><li>For Mantle chain, the canonical bridge with L1 to L2 transfers within ~2 minutes, and L2 to L1 transfers within 12-hours.</li></ul></td></tr></tbody></table>

### mETH Staking component

<table><thead><tr><th width="200.33333333333331">Item</th><th>Description</th></tr></thead><tbody><tr><td>Node Operators</td><td><ul><li><a href="https://www.a41.io/stake">A41</a>, <a href="https://p2p.org/">P2P</a>, <a href="https://www.blockdaemon.com/">Blockdaemon</a>, <a href="https://stake.fish/">stakefish</a>, <a href="https://www.kraken.com/">Kraken</a></li></ul></td></tr><tr><td>Rewards</td><td><ul><li>From staking rewards issued by the Ethereum blockchain</li></ul></td></tr><tr><td>Risks (slashing)</td><td><ul><li>Ethereum proof-of-stake validation <a href="https://ethereum.org/en/developers/docs/consensus-mechanisms/pos/rewards-and-penalties/">penalties</a></li></ul></td></tr><tr><td>Protocol Fee</td><td><ul><li>10% of rewards</li></ul></td></tr><tr><td>Oracles</td><td><ul><li>Quorum required: 3 of 6</li><li>Update frequency: 8 hours</li><li>Auto-pausing (risk management mechanism) is triggered upon unexpected deviations, see <a data-mention href="/pages/DHEWaV5PdCj5GmXQldR2">/pages/DHEWaV5PdCj5GmXQldR2</a>for more details.</li></ul></td></tr></tbody></table>

### mETH Liquidity Buffer component

<table><thead><tr><th width="199.66670735677081">Item</th><th>Description</th></tr></thead><tbody><tr><td>Active Position Managers</td><td><ul><li>Aave v3 Core Instance available at: <a href="https://app.aave.com/markets/">https://app.aave.com/markets/</a></li></ul></td></tr><tr><td>Rewards</td><td><ul><li>From lending rewards provided by supplying ETH</li></ul></td></tr><tr><td>Risks</td><td><ul><li>Smart contract risks, oracle risks, and collateral risks as described here: <a href="https://aave.com/docs/resources/risks">https://aave.com/docs/resources/risks</a>, noting that the Core Instance on ETH is generally regarded as the least risky and highest- liquidity market among all of DeFi</li></ul></td></tr><tr><td>Protocol Fee</td><td><ul><li>10% of rewards</li></ul></td></tr><tr><td>Deposits</td><td><ul><li>Managed by the protocol (not by users)</li><li>Instant</li></ul></td></tr><tr><td>Withdrawals</td><td><ul><li>Managed by the protocol (not by users)</li><li>Generally instant, but this will depend on ETH utilization levels of Aave. As of 2025-11-17, the market has 2.82M ETH supplied,  740k ETH available for immediate redemption.</li></ul></td></tr></tbody></table>

### cmETH

<table><thead><tr><th width="200">Item</th><th>Description</th></tr></thead><tbody><tr><td>cmETH receipt token</td><td><ul><li>Pegged 1:1 with mETH</li><li>ERC-20</li><li>LayerZero OFT</li><li>Receipt token for underlying mETH principal restaked across a dynamic set of restaking protocols</li></ul></td></tr><tr><td>cmETH token address</td><td><ul><li><a href="https://etherscan.io/address/0xe6829d9a7ee3040e1276fa75293bde931859e8fa#writeProxyContract">eth:0xE6829d9a7eE3040e1276Fa75293Bde931859e8fA</a></li><li><a href="https://mantlescan.xyz/address/0xE6829d9a7eE3040e1276Fa75293Bde931859e8fA#writeProxyContract">mantle:0xE6829d9a7eE3040e1276Fa75293Bde931859e8fA</a></li></ul></td></tr><tr><td>Restaking Protocols</td><td><ul><li><a href="https://www.eigenlayer.xyz/">EigenLayer</a>, <a href="https://symbiotic.fi/">Symbiotic</a>, <a href="https://karak.network/">Karak</a></li></ul></td></tr><tr><td>AVS Operators</td><td><ul><li><a href="https://www.a41.io/stake">A41</a>, <a href="https://p2p.org/">P2P</a></li></ul></td></tr><tr><td>Rewards</td><td><ul><li>Inherits mETH rewards</li><li>Additional restaking rewards, available at <a href="https://app.methprotocol.xyz/portfolio">https://app.methprotocol.xyz/portfolio</a></li></ul></td></tr><tr><td>Risks</td><td><ul><li>Inherits the same risks as mETH</li><li>Includes technical and operational risks of third-party restaking protocols</li><li>Includes additional risks associated with AVS penalties (if enabled), for example <a href="https://docs.eigencloud.xyz/products/eigenlayer/concepts/slashing/slashable-stake-risks">EigenLayer Slashing</a></li></ul></td></tr><tr><td>Protocol Fee</td><td><ul><li>20% of restaking rewards</li></ul></td></tr><tr><td>Oracles</td><td><ul><li>No dependency</li></ul></td></tr><tr><td>Vault Access</td><td><ul><li>Ethereum L1</li></ul></td></tr><tr><td>Deposits / Restake</td><td><ul><li>Instant</li><li>No fees</li></ul></td></tr><tr><td>Withdrawals / Unstake</td><td><ul><li>Up to ~7 day delay, depending on available inventory and third-party restaking protocol cooldowns</li></ul></td></tr><tr><td>Bridging</td><td><ul><li>LayerZero OFT</li><li>~5 minutes between chains with no slippage.</li></ul></td></tr></tbody></table>