Parameters
Deployed parameters for Mento V3 pools. The tables below document the configuration in use for USDC/USDm, axlUSDC/USDm, USDT/USDm (Celo), AUSD/USDm and USDC/USDm (Monad), and GBPm/USDm (Celo and Monad).
Unless stated otherwise, basis points (bps) use denominator 10,000. Governance can change parameters over time; for current on-chain configuration, see Addresses and chain explorers.
USDC/USDm, axlUSDC/USDm, USDT/USDm (Celo); AUSD/USDm, USDC/USDm (Monad)
These pools pair reserve-backed USDm with an external USD stablecoin. On Celo the deployed pools are USDC/USDm, axlUSDC/USDm, and USDT/USDm; on Monad, AUSD/USDm and USDC/USDm. Rebalancing uses ReserveLiquidityStrategy, not CDP-based liquidity.
Pools
Deployed pools
USDC/USDm, axlUSDC/USDm, USDT/USDm
FPMM
LP fee (φ_LP)
3 bps
FPMM
Protocol fee (φ_protocol)
2 bps
FPMM
Total fee (φ_total)
5 bps
FPMM
Rebalance incentive (ρ)
1 bps
FPMM
Rebalance threshold above (θ_above)
5000 bps
FPMM
Rebalance threshold below (θ_below)
3333 bps
Reserve Strategy
debtToken
USDm
Reserve Strategy
rebalanceCooldown
300 s
Reserve Strategy
protocolIncentiveExpansion / Contraction
0 %
Reserve Strategy
liquiditySourceIncentiveExpansion / Contraction
0 %
Oracle feed
Chainlink deviation threshold (USDC/USD, USDT/USD)†
0.5 %
Oracle feed
Chainlink heartbeat (USDC/USD, USDT/USD)†
240 s
Oracle feed
SortedOracles report expiry (v2 reference)
360 s
Risk controls
ValueDeltaBreaker threshold (USDC/USD, USDT/USD)
0.15 %
Risk controls
TradingLimitsV2 (each pool token) — 5 minutes
500,000
Risk controls
TradingLimitsV2 (each pool token) — 1 day
1,000,000
† External Chainlink feed settings; not configurable by Mento governance.
Pools
Deployed pools
AUSD/USDm, USDC/USDm
FPMM
LP fee (φ_LP)
3 bps
FPMM
Protocol fee (φ_protocol)
2 bps
FPMM
Total fee (φ_total)
5 bps
FPMM
Rebalance incentive (ρ)
1 bps
FPMM
Rebalance threshold above (θ_above)
5000 bps
FPMM
Rebalance threshold below (θ_below)
3333 bps
Reserve Strategy
debtToken
USDm
Reserve Strategy
rebalanceCooldown
300 s
Reserve Strategy
protocolIncentiveExpansion / Contraction
0 %
Reserve Strategy
liquiditySourceIncentiveExpansion / Contraction
0 %
Oracle feed
Chainlink deviation threshold (USDC/USD, AUSD/USD)†
0.05 %
Oracle feed
Chainlink heartbeat (USDC/USD, AUSD/USD)†
3600 s
Oracle feed
SortedOracles report expiry (heartbeat + 2 min)
3720 s
Risk controls
ValueDeltaBreaker threshold (USDC/USD, AUSD/USD)
0.15 %
Risk controls
TradingLimitsV2 (each pool token) — 5 minutes
2,500,000
Risk controls
TradingLimitsV2 (each pool token) — 1 day
5,000,000
† External Chainlink feed settings; not configurable by Mento governance.
GBPm/USDm
Oracle-priced GBPm/USDm pool deployed on both Celo and Monad. Celo has a GBPm CDP deployment (Liquity v2) and rebalancing uses the CDP Liquidity Strategy. Monad has no CDP deployment and no CDP Liquidity Strategy; rebalancing uses OpenLiquidityStrategy at 0x54e2Ae8c8448912E17cE0b2453bAFB7B0D80E40f.
Pools
Deployed pools
GBPm/USDm
FPMM
LP fee (φ_LP)
20
bps
FPMM
Protocol fee (φ_protocol)
10
bps
FPMM
Rebalance incentive (ρ)
6
bps
FPMM
Rebalance threshold above (θ_above)
5000
bps
FPMM
Rebalance threshold below (θ_below)
3333
bps
Oracle feed
Chainlink deviation threshold (GBP/USD)†
0.30
%
Oracle feed
Chainlink heartbeat (GBP/USD)†
240
s
Oracle feed
SortedOracles report expiry (v2 reference)
360
s
Risk controls
TradingLimitsV2 (USDm) — 5 minutes
100,000
USDm
Risk controls
TradingLimitsV2 (USDm) — 1 day
500,000
USDm
Risk controls
TradingLimitsV2 (GBPm) — 5 minutes
77,000
GBPm
Risk controls
TradingLimitsV2 (GBPm) — 1 day
385,000
GBPm
Risk controls
MedianDeltaBreaker threshold (relayed:GBPUSD, v2 reference)
4
%
Risk controls
MedianDeltaBreaker cooldown (v2 reference)
900
s
Risk controls
MedianDeltaBreaker smoothing factor (v2 reference)
0.005
—
CDP Strategy
rebalanceCooldown
300
s
CDP Strategy
stabilityPoolPercentage
2,000
bps
CDP Strategy
maxIterations
500
count
CDP Strategy
liquiditySourceIncentiveExpansion
0.05
%
CDP Strategy
liquiditySourceIncentiveContraction (fixed trove-owner fee)
0.05
%
CDP Strategy
protocolIncentiveExpansion / Contraction
0
%
CDP Strategy
REDEMPTION_SHORTFALL_TOLERANCE
≈10⁻⁶
USDm
† External Chainlink feed settings; not configurable by Mento governance.
Pools
Deployed pools
GBPm/USDm
FPMM
LP fee (φ_LP)
10
bps
FPMM
Protocol fee (φ_protocol)
5
bps
FPMM
Rebalance incentive (ρ)
6
bps
FPMM
Rebalance threshold above (θ_above)
5000
bps
FPMM
Rebalance threshold below (θ_below)
3333
bps
Oracle feed
Chainlink deviation threshold (GBP/USD)†
0.15
%
Oracle feed
Chainlink heartbeat (GBP/USD)†
240
s
Oracle feed
SortedOracles report expiry
360
s
Risk controls
TradingLimitsV2 (USDm) — 5 minutes
100,000
USDm
Risk controls
TradingLimitsV2 (USDm) — 1 day
500,000
USDm
Risk controls
TradingLimitsV2 (GBPm) — 5 minutes
77,000
GBPm
Risk controls
TradingLimitsV2 (GBPm) — 1 day
385,000
GBPm
Risk controls
MedianDeltaBreaker threshold
4
%
Risk controls
MedianDeltaBreaker cooldown
900
s
Risk controls
MedianDeltaBreaker smoothing factor
0.005
—
† External Chainlink feed settings; not configurable by Mento governance.
CDP (Bold / Liquity v2 fork) — GBPm on Celo
The following parameters apply to the CDP system (Bold / Liquity v2 fork) used for GBPm on Celo. This is a separate deployment from the GBPm/USDm FPMM pool; the pool uses CDPLiquidityStrategy to rebalance against the CDP. CDP contract addresses are in Addresses.
MIN_DEBT
1,000
GBPm
LIQUIDATION_PENALTY_SP
5
%
LIQUIDATION_PENALTY_REDISTRIBUTION
10
%
COLL_GAS_COMPENSATION_DIVISOR
200
—
COLL_GAS_COMPENSATION_CAP
10
USDm
ETH_GAS_COMPENSATION
1.0
CELO
CCR
135
%
SCR
110
%
MCR
110
%
BCR
10
%
MIN_ANNUAL_INTEREST_RATE
0.2
%
REDEMPTION_FEE_FLOOR
0.5
%
INITIAL_BASE_RATE
100
%
REDEMPTION_MINUTE_DECAY_FACTOR (≈60 min half-life)
0.9885140204
—
REDEMPTION_BETA
1
—
SP_YIELD_SPLIT
75
%
MIN_BOLD_IN_SP
1
GBPm
MIN_BOLD_AFTER_REBALANCE
5,000
GBPm
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