Flash loans and institutional credit are the only real uncollateralised crypto loans. Here is how to spot the scams and what to use if you need liquidity without selling.

"Crypto loans without collateral" is one of the most searched phrases in crypto lending, and almost everything ranking for it is either a scam or a misunderstanding. This guide explains what genuinely exists under that label, how to recognise the offers that are designed to take your money, and what to use instead if what you actually want is liquidity without selling.
A bank can lend you money without collateral because it knows who you are, can check your credit history, and can pursue you in court if you default. A smart contract knows none of that. It sees a wallet address that could be created a second ago and abandoned a second later. Without something locked in the contract, there is nothing stopping a borrower from taking the funds and never returning.
That is why every serious on-chain lending protocol, JewelSwap included, is overcollateralised: you lock more value than you borrow, and if the collateral's value falls too far, it is liquidated to repay the loan. We explain the mechanics in crypto-backed loans and what LTV means.
The only truly uncollateralised loan in DeFi. A flash loan is borrowed and repaid inside a single blockchain transaction; if the repayment is not there by the end of the transaction, the whole thing reverts as though it never happened. They are used by developers for arbitrage, collateral swaps and liquidations. They are useless for what most people searching this phrase want, because you cannot walk away with the money for even one block.
A handful of protocols (Maple, Goldfinch, Clearpool, TrueFi) lend with little or no on-chain collateral, but only to institutional borrowers who pass KYC, sign legal agreements and are underwritten off-chain. Retail users are the lenders in these systems, not the borrowers. Several of them took heavy losses in 2022 when borrowers defaulted, which is a reminder of what collateral is for.
Experiments with on-chain credit scores, social vouching and identity-linked loans exist, but at the time of writing none offers meaningful unsecured loan sizes to an anonymous wallet. If a project claims to, look for the catch: a large upfront "verification" fee, a token you must buy first, or a lender who turns out to be the project's own treasury lending to nobody.
Some centralised exchanges extend credit against your account balance. That is still collateral; it is just held in their custody instead of a contract. The same applies to "buy now pay later" crypto cards, which are underwritten on your identity and, in most cases, your bank account.
Because demand for unsecured crypto loans is real and supply is essentially zero, the search results are full of predators. The common shapes:
The single rule that filters all of them: if you have to send funds or grant an approval before receiving a loan, it is not a loan.
Most people searching for uncollateralised loans do not actually want unsecured credit; they want cash without selling assets they believe in. Collateralised borrowing does exactly that, and it does it without a credit check, a bank, or an identity.
The trade-off is liquidation risk: if your collateral's price drops past the threshold, part of it is sold to keep the loan solvent. Borrowing at a low LTV and monitoring the position is how you manage that; how DeFi liquidations work walks through the numbers.
Crypto loans without collateral exist for developers (flash loans) and for KYC'd institutions (credit protocols). For an individual with a wallet, they do not, and any site or person telling you otherwise is selling something. If you need liquidity, an overcollateralised loan at a sensible LTV is the tool that actually exists, and it costs you nothing upfront.