Risks of using Qern

Qern is a non-custodial interface that finds swap and bridge routes across third-party protocols. Please read the following before using it.

Software risk

Qern is under active development. Features may change, and bugs or outages can occur.

You control your funds

Qern never holds your assets or private keys. Every transaction is signed in your own wallet and cannot be reversed once confirmed on-chain. Always check the amounts, the destination chain and the recipient address in your wallet before signing.

Third-party protocols

Routes are executed by third-party liquidity providers, aggregators and bridges, and the protocols they route through. These smart contracts can contain vulnerabilities or be paused, and bridges can be delayed or fail. Qern does not control them.

Price movement and slippage

Quotes are estimates. Market prices can move between quoting and execution, so you may receive less than quoted, down to the minimum received amount shown before you sign.

Token approvals

Swapping a token requires approving a contract to spend it. Qern approves only the exact amount of each swap and only for verified router contracts, but you can review and revoke approvals at any time with a tool such as revoke.cash.

Fees

A platform fee and network and provider fees apply. They are itemized on each route before you confirm.