StableFX contract interfaces

User-facing methods of the StableFX contract

The StableFX smart contract (FxEscrow) has a set of interfaces you can use to execute trades either as a maker or a taker. This page describes the user-facing methods of the StableFX contract.

Contract address

The FxEscrow contract is deployed at 0x867650F5eAe8df91445971f14d89fd84F0C9a9f8 on the Arc testnet.

Interfaces

recordTrade

Records a trade agreement onchain. Returns the contract ID of the trade.

function recordTrade(
  address taker,
  TraderDetails calldata takerDetails,
  bytes calldata takerSignature,
  address maker,
  TraderDetails calldata makerDetails,
  bytes calldata makerSignature
) external returns (uint256);

Parameters

Name	Type	Description
taker	address	The address of the taker
takerDetails	TraderDetails	The details of the taker
takerSignature	bytes	The signature of the taker
maker	address	The address of the maker
makerDetails	TraderDetails	The details of the maker
makerSignature	bytes	The signature of the maker

Returns

Name	Type	Description
id	uint256	The contract ID of the trade

takerDeliver

Delivers quote currency for a single trade using Permit2 on the taker side.

function takerDeliver(uint256 id, IPermit2.PermitTransferFrom memory permit, bytes calldata signature) external;

Parameters

Name	Type	Description
id	uint256	The ID of the trade
permit	IPermit2.PermitTransferFrom	The Permit2-compliant transfer permit
signature	bytes	The signature for the transfer permit

takerBatchDeliver

Delivers quote currency for multiple trades using Permit2 on the taker side.

function takerBatchDeliver(uint256[] calldata ids, IPermit2.PermitBatchTransferFrom memory permit, bytes calldata signature) external;

Parameters

Name	Type	Description
ids	uint256[]	An array of trade IDs
permit	IPermit2.PermitBatchTransferFrom	The Permit2-compliant batch transfer permit
signature	bytes	The signature for the batch permit

makerDeliver

Delivers base currency for a single trade using Permit2 on the maker side.

function makerDeliver(uint256 id, IPermit2.PermitTransferFrom memory permit, bytes calldata signature) external

Parameters

Name	Type	Description
id	uint256	The ID of the trade
permit	IPermit2.PermitTransferFrom	The Permit2-compliant transfer permit
signature	bytes	The signature for the transfer permit

makerBatchDeliver

Delivers quote currency for multiple trades using Permit2 on the maker side.

function makerBatchDeliver(uint256[] calldata ids, IPermit2.PermitBatchTransferFrom memory permit, bytes calldata signature) external;

Parameters

Name	Type	Description
ids	uint256[]	An array of trade IDs
permit	IPermit2.PermitBatchTransferFrom	The Permit2-compliant batch transfer permit
signature	bytes	The signature for the batch permit

makerNetDeliver

Net settlement for multiple trades on the maker side.

function makerNetDeliver(uint256[] calldata ids, IPermit2.PermitBatchTransferFrom memory permit, bytes calldata signature) external

Parameters

Name	Type	Description
ids	uint256[]	An array of trade IDs
permit	IPermit2.PermitBatchTransferFrom	The Permit2-compliant batch transfer permit
signature	bytes	The signature for the batch permit

breach

Marks a trade as breached after maturity.

function breach(uint256 id) external;

Parameters

Name	Type	Description
id	uint256	The ID of the trade

breach (batch)

Marks multiple trades as breached after maturity.

function breach(uint256[] ids) external;

Parameters

Name	Type	Description
ids	uint256[]	An array of trade IDs

calculateMakerNet

Calculate maker net token positions for batch operations. Returns an array of Balance structs representing net positions.

function calculateMakerNet(address maker, uint256[] calldata ids) public view returns (Balance[] memory balances);

Parameters

Name	Type	Description
maker	address	The address of the maker
ids	uint256[]	An array of trade IDs

Returns

Name	Type	Description
balances	Balance[]	An array of Balance structs representing net positions