Buy & Swap ether.fi (ETHFI)

Staking without giving up your keys

ether.fi's documentation describes a staking protocol for Ethereum in which users can stake ether while retaining control of their keys. In typical staking services, the operator holds the validator keys; ether.fi's design keeps key control with the staker, which reduces the custody trade-off that staking usually involves.

The protocol issues liquid representations of staked positions, so stakers can use their staked value elsewhere in decentralised finance instead of locking it away. The documentation also covers restaking, where staked ether additionally secures other services for extra rewards.^{[1], [2], [3]}

From staking to spending

Beyond staking, ether.fi's documentation lists a set of products built on top of users' positions: a Cash card for spending, a Borrow product for taking loans against holdings, and Earn products for yield. The idea is that a staked position can function like a financial account — earning, borrowable and spendable — rather than a locked deposit.

The help centre confirms these are live products with support articles, and the documentation includes a markets section and contract addresses for developers integrating with the protocol.^{[4], [5], [6], [7]}

Where ETHFI fits

ETHFI is the protocol's governance token. ether.fi's documentation includes a governance section, and governance tokens of this kind let holders vote on protocol decisions: parameters, upgrades and the direction of the product set.

ETHFI is not required to stake ether on ether.fi; it is the ownership-and-voice layer of the protocol rather than a utility token needed to use the products.^[8]

Security and risk disclosure

The documentation maintains a dedicated security and risks section, which is the right place for any user to start. Staking and restaking involve smart-contract risk, slashing risk — penalties if validators misbehave — and, in the case of restaking, exposure to the additional services being secured.

ether.fi also documents its node-operator setup and legacy migration paths, reflecting a protocol that has iterated through several product generations while keeping its documentation public.

The documentation's structure is itself informative: products, developers, security, governance and about sections are separated, so a user can read the risk disclosures for exactly the product they intend to use rather than a single generic warning. The help centre adds a second layer of practical articles, including a basics section for people new to the protocol.^{[9], [10]}

Risks and limits to understand

Liquid staking and restaking stack several layers of risk: the underlying Ethereum validator performance, the protocol's own contracts, and any third-party services secured through restaking. The protocol's security documentation is candid about these layers and should be read before committing meaningful funds.

The Cash and Borrow products add a further layer — they are financial products with their own terms, availability and eligibility rules, distinct from the staking protocol itself.^{[9], [3], [4], [5]}

Restaking's long-term economics

ether.fi has built a broad product set on staking and restaking. How sustainable restaking yields prove as the sector matures is UNKNOWN from official sources.

It is not predicted here.^[3]