mStable is a protocol that unifies stablecoins, lending, and exchange into one powerful and easy-to-use standard. mta is the governance token of the mStable ecosystem that governs the mStable protocol. mStable consists of a series of smart contracts built on the Ethereum blockchain, and mStable can support many mASSETS. Each mASSET is pegged to a unique asset, such as fiat currency (USD) or a cryptocurrency such as Bitcoin. Each mASSET is backed by a basket of existing whitelisted tokenized assets. mASSETS are minted/redeemed permissionlessly on-chain via smart contracts. For example, to mint mUSD, a user sends 1 USDT and receives 1 mUSD in return. To redeem, the user sends one mUSD to the contract and can choose which bASSET to receive in exchange for transaction fees. If the maximum amount is exceeded, the user will receive a series of bASSETS for free reflecting the current basket composition. The mASSET is then burned (ie taken out of the loop).

Unlike other liquidity pool models such as Uniswap and Balancer, mStable employs a straight binding curve between bASSETS, and anyone can trade these underlying stablecoins at a 1:1 ratio. These trades do not cause price slippage as long as they do not violate volume requirements. mStable charges a fixed transaction fee for this. For example, in the mUSD basket, users will be able to swap between these underlying stablecoins.

All mStable assets will be able to earn interest rates. This is done by lending the underlying bASSETS along with the transaction fees of mStable on a decentralized lending marketplace such as Compound or AAVE. As interest and fees increase, new mASSETS are minted and sent to the relevant SAVE contract. Users who choose to receive interest by depositing their mASSET balance into the contract receive these newly minted mASSETS. The mStable asset retains its peg and is therefore both a liquidity share and a tokenized asset itself.