Mellow Review
Six named auditors on a Symbiotic-and-EigenLayer vault
of 10
Mellow builds restaking vaults on both Symbiotic and EigenLayer, with a fee manager defining deposit, redemption, performance and protocol fees as on-chain parameters. Six audit firms are named, but the fee figures, unbonding period and slashing detail are not published as fixed values.
No money changes hands. This is a non-commercial project: no advertising, no sponsored placements, and no affiliate or referral links. Links to the services below earn us nothing. Every overall score is the plain average of the criteria shown on the page, so you can check the arithmetic yourself — see our rating methodology and how the site is funded.
Fees
Deposit, redemption, performance and protocol fees; percentages not published
Secured
Symbiotic and EigenLayer
Redemption
Redeem queue exists; period and fee not stated
Licence
BUSL-1.1, change date 30 May 2028 to GPL-2.0-or-later
Auditors
StateMind, ChainSecurity, Sherlock, MixBytes, Nethermind, Decurity
Scores
Each criterion carries equal weight. The overall score is the average of these 5 scores — (4.0 + 5.0 + 4.0 + 5.0 + 10.0) ÷ 5 = 5.6.
Pros
- Integrates both Symbiotic and EigenLayer through dedicated verifier modules
- Six auditors named with reports: StateMind, ChainSecurity, Sherlock, MixBytes, Nethermind and Decurity
- Fee structure documented in four categories, all paid in vault shares
- Business Source License 1.1, converting to GPL in 2028
Cons
- Fee percentages are on-chain parameters, not published as fixed figures
- The unbonding period and any exit fee are not stated on the pages read
- Slashing and insurance detail was not verified on the pages read
- The receipt token's rebasing-versus-accruing model is not explicitly stated
The audit record is the strongest here
Six firms are named with published reports — StateMind, ChainSecurity, Sherlock, MixBytes, Nethermind and Decurity — the most complete audit disclosure in this comparison, and the reason Mellow tops that criterion.
Fees exist as parameters, not figures
The fee manager defines deposit, redemption, performance and time-based protocol fees, all paid in vault shares. What it does not do is publish the percentages: they are on-chain parameters a reader must inspect per vault. Documenting the structure without the numbers is partial disclosure, and the commission score reflects that.
What could not be read
The unbonding period, any exit fee, the slashing detail and the receipt token's mechanics were not stated on the pages we reached. For a restaking vault spanning two ecosystems, the slashing surface is exactly what a holder needs, and its absence is stated in the review rather than filled in.
How it compares
Eigenpie (mLRT)
Isolated per-LST restaking, little else documented
Karak
Nine-day withdrawal with a slashing window, docs blocked
EigenLayer
The restaking layer itself, opt-in slashing stated
Symbiotic
Twelve named auditors and a stated risk framework
Swell Restaking (rswETH)
Value-accruing rswETH, no licence file
Kelp DAO (rsETH)
10% fee and a delayed-open licence
ether.fi (eETH / weETH)
MIT-licensed, three-way reward split published
YieldNest (ynETH)
BSD-licensed with slashing stated plainly
Renzo (ezETH)
Fee split and withdrawal delays published in full
Sources
Scored from published primary sources rather than hands-on use. Every figure above comes from one of the pages below, on the date shown. Manufacturers change prices and specifications without notice — if something here no longer matches the source, tell us and we will correct it.
- 1.Mellow — fee manager — checked
- 2.Mellow — Simple LRT (Symbiotic integration) — checked
- 3.Mellow — LICENSE (BUSL-1.1) — checked
- 4.Mellow — security and audits — checked
Frequently asked questions
What does Mellow charge?
Mellow's fee manager defines deposit, redemption, performance and protocol fees paid in vault shares, but the percentages are on-chain parameters and were not published as figures on the pages we read.
What does Mellow restake into?
Mellow integrates both Symbiotic and EigenLayer through dedicated verifier modules.
Nothing here is financial advice. Editorial policy · How we score · How we're funded.