EigenLayer: Restaking & AVS Guide 2026
The restaking protocol powering Ethereum's cryptoeconomic security layer · +200 XP · 16 min read
📊 Stats as of March 2026 · Live data via DefiLlama ↗
What is EigenLayer?
EigenLayer is a restaking protocol on Ethereum that allows ETH stakers and liquid staking token (LST) holders to re-use their staked ETH to secure additional protocols called Actively Validated Services (AVSs). Essentially, you opt-in to additional slashing conditions in exchange for additional yield from the AVSs you secure.
Think of it as renting out your Ethereum economic security to power new decentralized services — data availability layers, oracle networks, bridges, co-processors — without needing to deploy fresh capital or launch new validator sets.
Key Concepts
Notable AVSs on EigenLayer
| AVS | Category | What it Does |
|---|---|---|
| EigenDA | Data Availability | High-throughput DA layer for rollups. Cheaper than Ethereum DA. Used by Mantle, Base, others. |
| AltLayer | Rollup Infra | Decentralized rollup-as-a-service infra. EigenLayer restakers secure rollup finality. |
| Lagrange | ZK Coprocessor | Enables smart contracts to read historical on-chain data with ZK proofs. |
| Witness Chain | Proof of Location | Decentralized geolocation verification using restakers as verifiers. |
| eOracle | Oracle | Modular oracle built on Ethereum + EigenLayer. AVS restakers validate price feeds. |
Operator risk: You delegate to operators — vet them carefully. Established node operators with track records are safer.
Concentration risk: A large portion of Ethereum security being controlled by a single middleware layer creates systemic concerns.