> For the complete documentation index, see [llms.txt](https://docs.mento.org/mento-v3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mento.org/mento-v3/build/deployments/parameters.md).

# 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](/mento-v3/build/deployments/addresses.md) 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](/mento-v3/build/deployments/addresses.md#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  |


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.mento.org/mento-v3/build/deployments/parameters.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.