# 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](https://docs.mento.org/mento-v3/build/deployments/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. {% tabs %} {% tab title="Celo Mainnet" %} | Parameter set | Parameter | Value | | -------------------- | --------------------------------------------------- | ---------------------------------- | | **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. {% endtab %} {% tab title="Monad" %} | Parameter set | Parameter | Value | | -------------------- | --------------------------------------------------- | -------------------- | | **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. {% endtab %} {% endtabs %} *** ## 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](https://monadscan.com/address/0x54e2Ae8c8448912E17cE0b2453bAFB7B0D80E40f). {% tabs %} {% tab title="Celo Mainnet" %} | Parameter set | Parameter | Value | Units | | ----------------- | ----------------------------------------------------------- | --------- | ----- | | **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. {% endtab %} {% tab title="Monad" %} | Parameter set | Parameter | Value | Units | | ---------------------- | ---------------------------------------- | ---------------------------------------------------------------------------------------------------------------------- | ----- | | **Pools** | Deployed pools | GBPm/USDm | | | **Liquidity strategy** | OpenLiquidityStrategy | [0x54e2Ae8c8448912E17cE0b2453bAFB7B0D80E40f](https://monadscan.com/address/0x54e2Ae8c8448912E17cE0b2453bAFB7B0D80E40f) | — | | **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. {% endtab %} {% endtabs %} *** ## 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](https://github.com/mento-protocol/docs/blob/main/build/deployments/smart-contracts/liquidity-strategies.md#cdpliquiditystrategy) to rebalance against the CDP. CDP contract addresses are in [Addresses](https://docs.mento.org/mento-v3/build/addresses#cdp-bold--liquity-v2-fork). Because Mento CDPs are **FX CDPs**, the branch price feed is gated by FX market hours through `FXPriceFeed -> OracleAdapter -> MarketHoursBreaker`. In practice, normal price-dependent trove operations, liquidations, and standard redemptions are unavailable while the FX market is closed (for example on weekends), while regular Stability Pool deposit / withdraw / claim flows remain available. | Parameter | Value | Units | | ----------------------------------------------------- | ------------ | ----- | | 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 |