PSM

Peg Stability Contract.
Contract for swapping stable token for VAI token and vice versa to maintain the peg stability between them.
Solidity API
enum FeeDirection {
  IN,
  OUT
}
BASIS_POINTS_DIVISOR
The divisor used to convert fees to basis points.
uint256 BASIS_POINTS_DIVISOR
MANTISSA_ONE
The mantissa value representing 1 (used for calculations).
uint256 MANTISSA_ONE
ONE_DOLLAR
The value representing one dollar in the stable token.
uint256 ONE_DOLLAR
VAI
VAI token contract.
contract IVAI VAI
STABLE_TOKEN_ADDRESS
The address of the stable token contract.
address STABLE_TOKEN_ADDRESS
oracle
The address of ResilientOracle contract wrapped in its interface.
contract ResilientOracleInterface oracle
venusTreasury
The address of the Venus Treasury contract.
address venusTreasury
feeIn
The incoming stableCoin fee. (Fee for swapStableForVAI).
uint256 feeIn
feeOut
The outgoing stableCoin fee. (Fee for swapVAIForStable).
uint256 feeOut
vaiMintCap
The maximum amount of VAI that can be minted through this contract.
uint256 vaiMintCap
vaiMinted
The total amount of VAI minted through this contract.
uint256 vaiMinted
isPaused
A flag indicating whether the contract is currently paused or not.
bool isPaused
initialize
Initializes the contract via Proxy Contract with the required parameters.
function initialize(address accessControlManager_, address venusTreasury_, address oracleAddress_, uint256 feeIn_, uint256 feeOut_, uint256 vaiMintCap_) external
Parameters
Name
Type
Description
accessControlManager_
address
The address of the AccessControlManager contract.
venusTreasury_
address
The address where fees will be sent.
oracleAddress_
address
The address of the ResilientOracle contract.
feeIn_
uint256
The percentage of fees to be applied to a stablecoin -> VAI swap.
feeOut_
uint256
The percentage of fees to be applied to a VAI -> stablecoin swap.
vaiMintCap_
uint256
The cap for the total amount of VAI that can be minted.
swapVAIForStable
Swaps VAI for a stable token.
function swapVAIForStable(address receiver, uint256 stableTknAmount) external returns (uint256)
Parameters
Name
Type
Description
receiver
address
The address where the stablecoin will be sent.
stableTknAmount
uint256
The amount of stable tokens to receive.
Return Values
Name
Type
Description
[0]
uint256
The amount of VAI received and burnt from the sender.
swapStableForVAI
Swaps stable tokens for VAI with fees.
function swapStableForVAI(address receiver, uint256 stableTknAmount) external returns (uint256)
Parameters
Name
Type
Description
receiver
address
The address that will receive the VAI tokens.
stableTknAmount
uint256
The amount of stable tokens to be swapped.
Return Values
Name
Type
Description
[0]
uint256
Amount of VAI minted to the sender.
pause
Pause the PSM contract.
function pause() external
resume
Resume the PSM contract.
function resume() external
setFeeIn
Set the fee percentage for incoming swaps.
function setFeeIn(uint256 feeIn_) external
Parameters
Name
Type
Description
feeIn_
uint256
The new fee percentage for incoming swaps.
setFeeOut
Set the fee percentage for outgoing swaps.
function setFeeOut(uint256 feeOut_) external
Parameters
Name
Type
Description
feeOut_
uint256
The new fee percentage for outgoing swaps.
setVenusTreasury
Set the address of the Venus Treasury contract.
function setVenusTreasury(address venusTreasury_) external
Parameters
Name
Type
Description
venusTreasury_
address
The new address of the Venus Treasury contract.
setOracle
Set the address of the ResilientOracle contract.
function setOracle(address oracleAddress_) external
Parameters
Name
Type
Description
oracleAddress_
address
The new address of the ResilientOracle contract.
previewSwapVAIForStable
Calculates the amount of VAI that would be burnt from the user.
function previewSwapVAIForStable(uint256 stableTknAmount) external view returns (uint256)
Parameters
Name
Type
Description
stableTknAmount
uint256
The amount of stable tokens to be received after the swap.
Return Values
Name
Type
Description
[0]
uint256
The amount of VAI that would be taken from the user.
previewSwapStableForVAI
Calculates the amount of VAI that would be sent to the receiver.
function previewSwapStableForVAI(uint256 stableTknAmount) external view returns (uint256)
Parameters
Name
Type
Description
stableTknAmount
uint256
The amount of stable tokens provided for the swap.
Return Values
Name
Type
Description
[0]
uint256
The amount of VAI that would be sent to the receiver.

Name	Type	Description
accessControlManager_	address	The address of the AccessControlManager contract.
venusTreasury_	address	The address where fees will be sent.
oracleAddress_	address	The address of the ResilientOracle contract.
feeIn_	uint256	The percentage of fees to be applied to a stablecoin -> VAI swap.
feeOut_	uint256	The percentage of fees to be applied to a VAI -> stablecoin swap.
vaiMintCap_	uint256	The cap for the total amount of VAI that can be minted.

Name	Type	Description
receiver	address	The address where the stablecoin will be sent.
stableTknAmount	uint256	The amount of stable tokens to receive.

Name	Type	Description
[0]	uint256	The amount of VAI received and burnt from the sender.

Name	Type	Description
receiver	address	The address that will receive the VAI tokens.
stableTknAmount	uint256	The amount of stable tokens to be swapped.

Name	Type	Description
[0]	uint256	Amount of VAI minted to the sender.

Name	Type	Description
feeIn_	uint256	The new fee percentage for incoming swaps.

Name	Type	Description
feeOut_	uint256	The new fee percentage for outgoing swaps.

Name	Type	Description
venusTreasury_	address	The new address of the Venus Treasury contract.

Name	Type	Description
oracleAddress_	address	The new address of the ResilientOracle contract.

Name	Type	Description
stableTknAmount	uint256	The amount of stable tokens to be received after the swap.

Name	Type	Description
[0]	uint256	The amount of VAI that would be taken from the user.

Name	Type	Description
stableTknAmount	uint256	The amount of stable tokens provided for the swap.

Name	Type	Description
[0]	uint256	The amount of VAI that would be sent to the receiver.

Last modified 1mo ago