ether.fi

ether.fi is a non-custodial, decentralized Ethereum liquid restaking protocol where stakers retain control of their validator keys. Users deposit ETH to mint eETH, a rebasing liquid restaking token (LRT), or wrap it into weETH, the non-rebasing ERC-20 used across DeFi and bridged cross-chain via LayerZero to networks including Arbitrum, Optimism, Base, Linea, Mode, Scroll, BNB Chain, Blast, Mantle, and Solana. Beyond ETH liquid restaking, ether.fi has expanded into eBTC (Bitcoin restaking) and eUSD (stablecoin restaking), Liquid auto- balancing strategy vaults, the ether.fi Cash non-custodial credit card with cashback, "The Club" membership tier program, and an AVS operator stack that runs services on EigenLayer, Symbiotic, and Karak. The protocol is governed by the ETHFI token via governance.ether.fi. ether.fi has no public REST API or developer SDK — its public surface is on-chain: open-source Solidity smart contracts on Ethereum mainnet (eETH, weETH, LiquidityPool, EtherFiNodesManager, EtherFiOracle, MembershipManager, ETHFI), cross-chain bridge contracts (weETH-cross-chain via LayerZero, ETHFI via Wormhole NTT), AVS operator contracts, plus operator tooling (etherfi-avs-operator, eigenpod-proofs-generation) and a public subgraph indexing protocol events. ether.fi is one of the largest LRT protocols by TVL with deep integrations across Aave, Pendle, Gearbox, Morpho, and other DeFi venues.

ether.fi is profiled on the APIs.io network. Tagged areas include Ethereum, Liquid Restaking, Liquid Staking, Restaking, and LRT.

ether.fi’s developer surface includes documentation, engineering blog, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub

5.2/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs 20 Features

EthereumLiquid RestakingLiquid Staking RestakingLRTEigenLayerSymbioticKarakDeFi Smart ContractseETHweETHeBTCeUSDETHFIAVS LayerZero Cross-ChainCash CardLiquid VaultsOpen-Source

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 5.2/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 2.8 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 1.4 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/etherfi: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Features 20

Notable capabilities this provider offers.

Non-custodial Ethereum liquid restaking — stakers retain validator keys

eETH rebasing liquid restaking token (LRT)

weETH non-rebasing ERC-20 wrapped version of eETH used across DeFi

eBTC Bitcoin restaking token

eUSD stablecoin restaking token

Liquid auto-balancing strategy vaults

ether.fi Cash non-custodial Visa credit card with cashback

The Club tiered membership and financial services program

Native restaking integration with EigenLayer, Symbiotic, and Karak

AVS operator infrastructure (etherfi-avs-operator) running services on top of restaked ETH

Cross-chain weETH via LayerZero on Arbitrum, Optimism, Base, Linea, Mode, Scroll, BNB Chain, Blast, Mantle, Solana

ETHFI governance token (cross-chain via Wormhole NTT)

Membership NFTs and loyalty points program

Distributed Validator Technology (DVT) via SSV Network

EigenPod proof generation tooling (Go)

EtherFiOracle off-chain oracle for validator state and rewards

Public subgraph indexing protocol contract events

Deep DeFi integrations with Aave, Pendle, Gearbox, Morpho, Curve, Balancer, Uniswap

Audited by CertiK, Certora, Hats Finance, Nethermind, Omniscia, Solidified

Open-source under MIT license on GitHub (etherfi-protocol)

Scroll for all 20

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Etherfi Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

TechnicalDocumentation

TechnicalDocumentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

BugBounty

BugBounty

Operate 2

Status, limits, changes, and where to get help

HelpCenter

HelpCenter

Discord

Discord

Company 4

The organization behind the API

Website

Website

Twitter

Twitter

LinkedIn

Blog

Blog

Other 14

Properties that don't map to a standard resource type

App

Stake

Restake

Liquid

Cash

Club

Institutional

Contracts

NodeOperators

Governance

OpenSource

DefiLlama

Dune

Medium

Scroll for all 14

Source (apis.yml)

aid: etherfi
name: ether.fi
description: 'ether.fi is a non-custodial, decentralized Ethereum liquid restaking protocol where stakers retain control of
  their validator keys. Users deposit ETH to mint eETH, a rebasing liquid restaking token (LRT), or wrap it into weETH, the
  non-rebasing ERC-20 used across DeFi and bridged cross-chain via LayerZero to networks including Arbitrum, Optimism, Base,
  Linea, Mode, Scroll, BNB Chain, Blast, Mantle, and Solana. Beyond ETH liquid restaking, ether.fi has expanded into eBTC
  (Bitcoin restaking) and eUSD (stablecoin restaking), Liquid auto- balancing strategy vaults, the ether.fi Cash non-custodial
  credit card with cashback, "The Club" membership tier program, and an AVS operator stack that runs services on EigenLayer,
  Symbiotic, and Karak. The protocol is governed by the ETHFI token via governance.ether.fi. ether.fi has no public REST API
  or developer SDK — its public surface is on-chain: open-source Solidity smart contracts on Ethereum mainnet (eETH, weETH,
  LiquidityPool, EtherFiNodesManager, EtherFiOracle, MembershipManager, ETHFI), cross-chain bridge contracts (weETH-cross-chain
  via LayerZero, ETHFI via Wormhole NTT), AVS operator contracts, plus operator tooling (etherfi-avs-operator, eigenpod-proofs-generation)
  and a public subgraph indexing protocol events. ether.fi is one of the largest LRT protocols by TVL with deep integrations
  across Aave, Pendle, Gearbox, Morpho, and other DeFi venues.'
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Producing
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/etherfi.png
tags:
- Ethereum
- Liquid Restaking
- Liquid Staking
- Restaking
- LRT
- EigenLayer
- Symbiotic
- Karak
- DeFi
- Smart Contracts
- eETH
- weETH
- eBTC
- eUSD
- ETHFI
- AVS
- LayerZero
- Cross-Chain
- Cash Card
- Liquid Vaults
- Open-Source
tags_raw:
- Ethereum
- Liquid Restaking
- Liquid Staking
- Restaking
- LRT
- EigenLayer
- Symbiotic
- Karak
- DeFi
- Smart Contracts
- eETH
- weETH
- eBTC
- eUSD
- ETHFI
- AVS
- LayerZero
- Cross-Chain
- Cash Card
- Liquid Vaults
- Open Source
url: https://raw.githubusercontent.com/api-evangelist/etherfi/refs/heads/main/apis.yml
created: '2026-05-24'
modified: '2026-05-24'
specificationVersion: '0.23'
apis: []
common:
- type: DomainSecurity
  url: security/etherfi-domain-security.yml
- type: Website
  url: https://www.ether.fi
- type: App
  url: https://app.ether.fi
- type: Stake
  url: https://www.ether.fi/stake
- type: Restake
  url: https://www.ether.fi/restake
- type: Liquid
  url: https://www.ether.fi/liquid
- type: Cash
  url: https://www.ether.fi/cash
- type: Club
  url: https://www.ether.fi/the-club
- type: Institutional
  url: https://www.ether.fi/institutional
- type: Documentation
  url: https://etherfi.gitbook.io/etherfi
- type: TechnicalDocumentation
  url: https://etherfi.gitbook.io/etherfi/ether.fi-whitepaper/technical-documentation
- type: Contracts
  url: https://etherfi.gitbook.io/etherfi/contracts-and-integrations/contracts
- type: Integrations
  url: https://etherfi.gitbook.io/etherfi/contracts-and-integrations/integrations
- type: NodeOperators
  url: https://etherfi.gitbook.io/etherfi/node-operators/node-operators-guide
- type: HelpCenter
  url: https://help.ether.fi
- type: Governance
  url: https://governance.ether.fi
- type: GitHubOrganization
  url: https://github.com/etherfi-protocol
- type: OpenSource
  url: https://github.com/etherfi-protocol/smart-contracts
- type: BugBounty
  url: https://immunefi.com/bug-bounty/etherfi/
- type: DefiLlama
  url: https://defillama.com/protocol/ether.fi
- type: Dune
  url: https://dune.com/etherfi_team/etherfi
- type: Twitter
  url: https://twitter.com/ether_fi
- type: Discord
  url: https://discord.gg/ether-fi
- type: Medium
  url: https://medium.com/etherfi
- type: LinkedIn
  url: https://www.linkedin.com/company/ether-fi
- type: Blog
  url: https://medium.com/feed/etherfi
- type: Features
  data:
  - Non-custodial Ethereum liquid restaking — stakers retain validator keys
  - eETH rebasing liquid restaking token (LRT)
  - weETH non-rebasing ERC-20 wrapped version of eETH used across DeFi
  - eBTC Bitcoin restaking token
  - eUSD stablecoin restaking token
  - Liquid auto-balancing strategy vaults
  - ether.fi Cash non-custodial Visa credit card with cashback
  - The Club tiered membership and financial services program
  - Native restaking integration with EigenLayer, Symbiotic, and Karak
  - AVS operator infrastructure (etherfi-avs-operator) running services on top of restaked ETH
  - Cross-chain weETH via LayerZero on Arbitrum, Optimism, Base, Linea, Mode, Scroll, BNB Chain, Blast, Mantle, Solana
  - ETHFI governance token (cross-chain via Wormhole NTT)
  - Membership NFTs and loyalty points program
  - Distributed Validator Technology (DVT) via SSV Network
  - EigenPod proof generation tooling (Go)
  - EtherFiOracle off-chain oracle for validator state and rewards
  - Public subgraph indexing protocol contract events
  - Deep DeFi integrations with Aave, Pendle, Gearbox, Morpho, Curve, Balancer, Uniswap
  - Audited by CertiK, Certora, Hats Finance, Nethermind, Omniscia, Solidified
  - Open-source under MIT license on GitHub (etherfi-protocol)
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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