# \[FIP - 435\] Allow the use of Stake DAO OnlyBoost for sfrxUSD Curve AMOs

**URL:** <https://gov.frax.finance/t/fip-435-allow-the-use-of-stake-dao-onlyboost-for-sfrxusd-curve-amos/3791>\
**Category:** Governance Proposals\
**Created:** [September 20, 2025, 12:43am UTC](https://gov.frax.finance/t/fip-435-allow-the-use-of-stake-dao-onlyboost-for-sfrxusd-curve-amos/3791 "2025-09-20T00:43:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nader.frax](https://yyz1.discourse-cdn.com/flex031/user_avatar/gov.frax.finance/nader.frax/32/1849_2.png) [@nader.frax](https://gov.frax.finance/u/nader.frax)\
**Post date:** [September 20, 2025, 12:43am UTC](https://gov.frax.finance/t/fip-435-allow-the-use-of-stake-dao-onlyboost-for-sfrxusd-curve-amos/3791/1 "2025-09-20T00:43:15Z")

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### Authors

Stake DAO contributors and Frax core team

## Summary

This proposal amends FIP-434 to allow sfrxUSD Curve AMOs to optionally route through Stake DAO’s OnlyBoost system when it provides higher effective yield. OnlyBoost is a neutral optimizer that dynamically allocates liquidity between Convex and Stake DAO infrastructure, always selecting the configuration that maximizes realized CRV rewards.

## Background and Motivation

The Frax protocol’s objective with sfrxUSD AMOs is simple: maximize net yield in a risk-neutral way while maintaining broad ecosystem alignment.

OnlyBoost enhances this mission by:

- Dynamic routing: Liquidity is directed between Stake DAO and Convex depending on which delivers the highest boost.

- Convex alignment: When Convex is the optimal venue, OnlyBoost routes deposits directly there.

- No extra cost: There are no additional fees, guaranteeing equal or higher net yield versus current AMO design.

- Staking V2 benefits:

This design ensures sfrxUSD Curve AMOs fully capture available veCRV boost, leveraging Stake DAO’s own veCRV, Convex’s veCRV, and veCRV delegations from Curve team. Importantly, Frax does not favor one venue over another — routing is determined purely by realized yield outcomes.

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## Proposal

- Extend Curve AMOs from FIP-434 (sfrxUSD/frxUSD, sfrxUSD/reUSD, sfrxUSD/USDe, sfrxUSD/dUSD) to also include Stake DAO OnlyBoost when it maximizes revenue.

- Allocation caps remain unchanged.

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## Rationale

- Best yield guarantee: Onlyboost dynamic routing between Stake DAO & Convex for maximum CRV rewards.
- No extra cost: OnlyBoost takes no additional fee on Convex allocations.
- Faster reward distribution: going through Onlyboost would allow instant reward distribution to Frax, and wouldn’t introduce any delay for the part going through Convex’s booster
- Risk neutral: Assets remain in Curve pools. Stake DAO contracts are audited and protected by Hypernative

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## Voting

- For: Add Stake DAO OnlyBoost as eligible venue for sfrxUSD Curve AMOs.
- Against: Do nothing.

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### Ressources:

- Whitepaper Staking V2 + Onlyboost: [GitHub](https://github.com/stake-dao/whitepapers/tree/main/Staking%20V2)
- Audits: [LINK](https://github.com/stake-dao/audits)

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<div class="post-metadata">

**Author:** ![nader.frax](https://yyz1.discourse-cdn.com/flex031/user_avatar/gov.frax.finance/nader.frax/32/1849_2.png) [@nader.frax](https://gov.frax.finance/u/nader.frax)\
**Post date:** [September 25, 2025, 5:57pm UTC](https://gov.frax.finance/t/fip-435-allow-the-use-of-stake-dao-onlyboost-for-sfrxusd-curve-amos/3791/2 "2025-09-25T17:57:05Z")

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This proposal is up for voting [here](https://snapshot.box/#/s:frax.eth/proposal/0xe444d5453ef1b2332e8e5dcd2cceef1124f0b5f2b2c34bb6b966701ddbb44833).