How Does Exactly Protocol Work?
A lending protocol that offers fixed interest rates with set maturity dates alongside variable rates, similar to bonds in traditional finance. It manages $50M across Optimism and Base with $5M in funding. Its B- grade reflects the novel fixed-rate design offset by small scale and L2 dependency risks.
TVL
$3M
Sector
Lending
Risk Grade
B
Value Grade
C
Core Mechanisms
Lending/Fixed-Rate
NovelFixed-rate lending pools with maturity dates alongside variable-rate markets
Exactly offers both fixed and variable interest rate markets in a single protocol. Fixed-rate positions lock in rates until maturity, creating a unique DeFi credit market that bridges traditional fixed-income with on-chain lending.
Lending/Interest-Rate
NovelDual interest rate model combining variable utilization curves with fixed-rate auctions
The protocol uses a utilization-based interest rate curve for variable rates while simultaneously running fixed-rate markets with specific maturity dates. This dual-model approach is novel in DeFi lending.
Lending/Over-Collateralized
Over-collateralized lending with configurable collateral factors per asset
Standard over-collateralized lending model. Borrowers deposit collateral exceeding loan value with per-asset risk parameters governing collateral ratios.
Liquidation/Fixed-Spread
Liquidation mechanism with fixed bonus incentive for liquidators
Positions breaching health factor thresholds are liquidated by third-party bots receiving a fixed percentage bonus. Standard approach similar to Aave/Compound.
Oracle/Chainlink
Chainlink price feeds for collateral valuation on Optimism and Base
Relies on Chainlink oracle feeds for price data. L2 deployment introduces additional dependency on sequencer uptime for timely oracle updates.
Governance/Token
EXA governance token with protocol parameter control
EXA token provides governance rights over protocol parameters. Total supply of 10M tokens with ~4.5M in circulation. Fair launch with no VC-dominated allocation.
How the Pieces Interact
Duration mismatch between fixed-rate borrowers (locked until maturity) and variable-rate depositors (can withdraw anytime) creates liquidity risk during rate regime changes. If variable rates spike externally, depositors withdraw while fixed-rate loans remain locked.
Fixed-rate loans with set maturities limit the protocol's ability to dynamically adjust collateral requirements in response to market volatility, potentially leaving positions inadequately collateralized for the full maturity duration.
On Optimism/Base, oracle updates depend on L2 sequencer uptime. During sequencer downtime, stale prices persist, enabling borrowing against outdated collateral valuations or preventing timely liquidations.
Centralized L2 sequencers control transaction ordering, potentially enabling front-running of liquidations or delayed inclusion of liquidation transactions during congestion.
With FDV under $5M, a governance attack via token accumulation is relatively cheap. An attacker could acquire sufficient EXA to modify protocol parameters (collateral factors, interest rate curves) to their advantage.
What Could Go Wrong
- Fixed-rate lending creates duration mismatch risk where locked loans prevent liquidity withdrawal during rate spikes
- Multi-chain deployment on Optimism and Base introduces L2 sequencer dependency and oracle latency risks
- Small TVL and low FDV limit liquidity depth, amplifying impact of any exploit or confidence shock
Fixed-Rate Maturity Mismatch Crisis
ModerateTrigger: A sharp interest rate shock causes variable rates to spike well above locked fixed rates, creating a duration mismatch that drains protocol liquidity as lenders withdraw variable-rate deposits to chase higher yields elsewhere
- 1.DeFi lending rates spike across Aave and Compound due to market volatility — Variable-rate depositors on Exactly see better yields elsewhere and begin withdrawing
- 2.Fixed-rate borrowers remain locked at below-market rates, draining the protocol's available liquidity — Utilization ratio spikes to near 100%, blocking remaining variable-rate lenders from withdrawing
- 3.Withdrawal queue grows as variable-rate depositors cannot exit — Panic sets in; depositors rush to withdraw before remaining liquidity is consumed
- 4.Protocol becomes functionally illiquid despite having performing fixed-rate loans — Depositors face forced lock-up until fixed-rate maturities expire; trust in the protocol collapses
Risk Profile at a Glance
Overall: B (24/100)
Lower score = safer