LoanGuard - Portir

Verified on BscScan. It speaks the Venus comptroller / vToken interface, so the same contract points at the Venus core pool on mainnet or the Venus-compatible StockLendingPool on testnet.

Data

struct Guard {
    address executor;
    address vToken;        // the debt market repaid on rescue (e.g. vUSDT)
    uint16 triggerBps;     // rescue allowed once debt / liquidation limit reaches this
    uint16 targetBps;      // the executor aims back to this
    uint128 maxPerRescue;  // debt-token units
    uint32 cooldown;
    uint40 lastRescueAt;
    bool active;
}

struct Rescue { uint40 at; uint128 amount; uint16 usedBpsBefore; uint16 usedBpsAfter; }

Functions

Function	Caller	Effect
`setGuard(executor, vToken, triggerBps, targetBps, maxPerRescue, cooldown)`	borrower	Requires `0 < target < trigger < 10000`
`cancelGuard()`	borrower	Deactivates
`rescue(borrower, amount)`	the borrower’s executor	Pulls `amount` from the borrower and calls `repayBorrowBehalf`
`usedBps(borrower)`	view	Debt / Σ (collateral × liquidation threshold)
`position(borrower)`	view	`(debtUsd, limitUsd)`
`guardOf`, `rescuesOf`, `borrowers`, `comptroller`	view	Reads

Checks inside `rescue`

Guard active, caller is the borrower’s executor, amount > 0.
amount ≤ maxPerRescue (OverCap), cooldown passed (Cooldown).
usedBps ≥ triggerBps, computed from the pool’s oracle, getAccountSnapshot and the liquidation threshold (NotAtRisk).
Transfer from the borrower, repay, and revert with VenusError(code) on any non-zero Venus code.
Record the rescue with used limit before and after.

Events and errors

Events: GuardSet, GuardCancelled, Rescued. Errors: BadThresholds, ZeroAmount, NotExecutor, GuardInactive, OverCap(cap), Cooldown(until), NotAtRisk(usedBps, triggerBps), VenusError(code).