Anyswap: What Determines Whether a Swap Goes Through
A cross-chain Anyswap order goes through only when four gates line up: the pair is routable, the deposit fits the live quote, the destination address matches the receiving chain, and the source transaction supplies enough fee for confirmation. A green quote is therefore not a promise of settlement. It is a conditional route, and each condition can expire, reject, or revert before the output arrives.
What is the first limit Anyswap applies?
The first hard limit is routability, not account size. The interface must find an executable path from the input asset on the source network to the requested output asset on the destination network. That path might use direct liquidity, an exchange venue, a bridge, or an intermediate asset.
A matching ticker is not enough. An ERC-20 token on Ethereum, a token on BNB Chain, and an SPL asset on Solana can share a symbol while representing different contracts, decimals, and settlement rules. If the selected network, token standard, or route does not match available liquidity, the order cannot proceed. No higher gas setting fixes a missing market.
Does the amount fit the live Anyswap quote?
Yes, the amount is a gate of its own. A route normally has a minimum and maximum, a quoted output, a validity window, and an exact input asset. Sending less than the minimum, more than the maximum, the wrong asset, or the wrong amount can move the deposit outside the executable instruction.
Quote expiry matters because liquidity and prices change. A quote is not a permanent rate card; it is a snapshot of a route. If the deposit arrives after the quote expires, the system may enter a refund process instead of executing the swap. The refund can still require a valid destination and network fee.
| Gate | What must match | What can stop settlement |
|---|---|---|
| Route | Pair, chain, token standard, available liquidity | No executable path or unsupported asset |
| Quote | Amount range, asset, deadline | Expired quote or out-of-range deposit |
| Destination | Address format and receiving chain | Checksum, chain, or asset mismatch |
| Source transaction | Correct fee token and confirmation | Pending, rejected, or reverted transaction |
Which address check can stop an Anyswap route?
The receiving address must be valid for the selected chain, but “valid” does not mean “correct.” On EVM networks, the same hexadecimal-looking address may exist on Ethereum, Base, Arbitrum, or Polygon. Sending to the wrong network can produce a technically valid transaction with the wrong destination.
For ERC-20 transfers, the wallet also needs the native gas token for the source chain. Holding USDT does not automatically pay Ethereum gas; an EVM wallet needs ETH on Ethereum, BNB on BNB Chain, or the relevant native asset elsewhere. On Solana, the address format and fee mechanics are different again. The safest check is to compare the selected chain, token contract, recipient, and displayed amount separately.
Why can a correctly filled order still fail on-chain?
Because a quote is an interface calculation, while settlement depends on a blockchain transaction. On an EVM leg, the transaction must satisfy the account’s nonce, balance, ERC-20 allowance, gas limit, and EIP-1559 fee settings. A smart-contract call can also revert because of a deadline, slippage rule, paused route, or changed state.
Ethereum.org’s gas documentation states: “The fee is paid regardless of whether a transaction succeeds or fails.” That general rule is the part many swap screens make easy to forget. Gas pays for computation and inclusion attempts; it does not purchase a successful output.
I ruled out the obvious shortcut of treating a successful quote as a standing limit. The important detail is that route liquidity, price, amount bounds, and expiry are tied to the specific quote, not merely to the pair name.
What should be checked before sending funds?
- Confirm the exact input and output assets, including their networks and token contracts.
- Check the quoted minimum, maximum, expiry, estimated output, and any displayed route fee.
- Verify the destination address using the receiving chain’s format and copy it from the intended wallet.
- Keep enough native gas currency for approval, deposit, and any required source transaction.
- Save the order ID, transaction hash, and quote details before sending.
Before sending funds through Anyswap, read the screen as a set of conditions: route available, amount accepted, address compatible, quote alive, and transaction funded. When all five remain true at submission and confirmation, the swap has a workable path. When one fails, waiting for more confirmations or adding gas may not help; the order needs a new quote or a documented refund path.