JamFi

JamFi puts lending, a payment card and cross-border transfer into one account system: a user borrows stablecoins against on-chain collateral, spends through a card at merchants, or moves funds to a local receiving account over a cross-border channel. Collateral covers major tokens and tokenized real-world assets, with loan-to-value set between 130% and 150% according to asset volatility.

Mechanically, real-world assets enter the protocol as rToken, a receipt for the underlying asset's yield whose price is cross-checked against both an oracle feed and net asset value; liquidation carries a 48-hour timelock, entering a buffer window during which the borrower can top up collateral or repay part of the debt, and only after the buffer ends does a discounted auction run. Card spending and borrowing share one credit line, so a purchase raises the debt balance. Its users are people who want to spend against on-chain holdings and settle across borders. The team has published the rToken mint and redeem flow together with the parameter range for the liquidation buffer.