Token Types
In line with Balancer's yield-bearing native thesis, the vault supports a token specialization to provide built-in support for yield-bearing assets.
WITH_RATE
)
Tokens with external rates (Tokens should be defined as WITH_RATE
when they have an externally available exchange rate to some other asset that the AMM should consider when pricing assets internally. Two classical examples are:
wstETH
- A wrapped version of the rebasing token stETH, the wstETH rate represents the exchange rate of wstETH -> stETH, which grows as staking rewards accumulate.EURe
- When pairing a EURO stable coin against a USD stable coin, there is a known FX market exchange rate of EUR -> USD.
See Rate scaling For an in-depth explanation on how Balancer manages tokens with rates.
When registering a token as WITH_RATE
, your TokenConfig
should resemble the following:
TokenConfig({
token: 0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0,
tokenType: TokenType.WITH_RATE,
rateProvider: 0x72D07D7DcA67b8A406aD1Ec34ce969c90bFEE768,
paysYieldFees: true
})
What does paysYieldFees mean?
paysYieldFees means that a portion of the yield a specific token accrues is used to fund Balancer DAO operations. Similar to how swap fees accrue to the Balancer treasury.
STANDARD
)
All other tokens (Any token that is not WITH_RATE
should be set as STANDARD
.
When registering a token as STANDARD
, your TokenConfig
should resemble the following:
TokenConfig({
token: 0xba100000625a3754423978a60c9317c58a424e3D,
tokenType: TokenType.STANDARD,
rateProvider: 0x0000000000000000000000000000000000000000,
paysYieldFees: true
})