Collateral & LTV

LTV on Lendr is a borrower decision, not a protocol parameter. The contract has no price feed and no notion of USD value anywhere in abi.ts — it only ever moves exact token amounts that were specified when the listing was created.

How the UI computes LTV

export function tokenAmountUsd(amount: bigint, decimals: number, priceUsd: number): number {
  const asNumber = Number(amount) / 10 ** decimals;
  return asNumber * priceUsd;
}

export function ltvPct(loanUsd: number, collateralUsd: number): number | null {
  if (collateralUsd <= 0 || !Number.isFinite(loanUsd) || !Number.isFinite(collateralUsd)) return null;
  return (loanUsd / collateralUsd) * 100;
}

collateralUsd and loanUsd come from a live price lookup fetched client-side purely for display — in the Create listing modal's preview, and in the market table's LTV column. USDG is treated as pegged at 1.00 for this calculation. None of this runs on-chain, and none of it blocks a transaction; you can create or fill a listing at any LTV the two parties agree to, including one deeply above 100%.

What is enforced on-chain: allowedCollateral

The one collateral-related check the contract does make is a binary allow-list, fixed at deployment. createListing will revert for a collateralToken the market wasn't deployed with.

allowedCollateral(token) → bool