If you are moving crypto from your own wallet and signing takes a minute, check whether the route quote is still current before you submit it.
What expires while you sign?
A route quote is a time-limited estimate of what a cross-chain transfer may deliver. It combines the source-chain transaction, any swaps, and the planned transfer to the destination chain. Unlike a centralised exchange order, it usually does not reserve a price while you review it.
The expiry window depends on the service and route; there is no standard duration. When a quote expires, its estimated output may no longer be reliable. LI.FI’s quote documentation describes routes as transfer plans, while Ethereum’s EIP-1559 specification explains why network fees can change from block to block.
Quote expiry and an on-chain deadline are different. Expiry may mean the service will no longer stand behind the estimate; a transaction deadline is a condition written into a transaction that can make it fail after a set time. Some transactions also enforce a minimum output, the least amount you agree to receive. Check the wallet details for those conditions when available.
Why can signing time change the result?
Signing time matters because prices and available liquidity can move while you review the wallet request. Signing approves a transaction; it does not freeze the quoted price or guarantee that the transaction will succeed. Some tokens also need an approval, which lets a contract spend a set amount of your token, before the transfer can proceed.
Say a route estimates 995 destination tokens for 1,000 USDC and expires after 60 seconds. If you spend a minute checking the chain and fee details, the new quote might estimate 989 tokens. Refreshing gives you a current estimate; it does not move your funds by itself. For acrossbridge users making a cross-chain move and swap in one flow, acrossbridge crypto handles that combined transfer task.
Before signing, compare the destination amount and any minimum output with the fresh quote. If the older request is still open in your wallet, review it again rather than assuming the service’s displayed quote still applies. A lower minimum output allows more price movement, but it also means you could receive less.
What should you check before sending?
Get a fresh quote if the old one has expired, the wallet request sat open, or the displayed amount changed. Then check that the source token, source network, destination token, and destination network match your intention. A correct amount sent on the wrong network can create a difficult recovery.
Review the wallet’s network fee separately from the route’s estimated output. The fee pays the source network to process your transaction, and congestion can change it while you wait. If the fee or output no longer suits you, reject the request and review a fresh quote instead of rushing to sign.
Allow time to read the wallet prompt, then act on the current quote: it is an estimate with a clock, not a reserved exchange order.
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