The stSUI Standard

stSUI is one implementation of the stSUI Standard. The Standard is a reusable framework.

What is the stSUI Standard?

An open-source framework for building liquid staking tokens on Sui. It defines how the contracts work — minting, redemption, validator delegation, fees, and DeFi features like flash staking.

Any team can use the Standard to launch their own LST.

Why a standard?

Most early LSTs are one-off designs. A standard means:

• New LSTs don't need to build from scratch.
• DeFi protocols can support multiple LSTs through one interface.
• Audits and security improvements carry across implementations.

What changed from SpringSUI

The Standard is forked from SpringSUI with three changes:

• Multi-validator reward optimization. Better suited for splitting stake across many validators.
• Flash staking support. Atomic stake-and-use flows in a single transaction.
• Redistributable redemption fees. Part of the redeem fee can go back to remaining stakers instead of the operator.

Custom LSTs on the Standard

Any team can deploy their own LST with their own:

• Validator set and weights
• Fee configuration
• Admin controls

stSUI is AlphaFi's configuration. Other teams can run different ones.