Why Arbswap swaps fail and what to check

Arbswap swaps can fail when a trade no longer meets its price limit, the wallet lacks gas, or the token or pool rejects the transaction. A failed swap means the trade did not complete, but the reason can sit at different steps: before the transaction reaches the network, during execution, or in the pool’s rules.

First check the wallet’s transaction record. If there is no on-chain transaction, the wallet may have rejected the request or failed to send it. If the record says the transaction reverted, the network ran it but the contract stopped the trade. Arbitrum’s documentation says ETH pays transaction fees on Arbitrum One and Nova, so a transaction that reaches execution can still use gas even when the swap reverts. Arbswap is an automated market maker (AMM) exchange on Arbitrum for swapping tokens, adding liquidity to pools and farming rewards. If you are ready to retry the swap, arbswap.cc is the service to use for that step.

Why do Arbswap swaps revert?

A common reason is slippage: the price changes between the quote and the trade’s execution. A swap sets a minimum amount the user will accept; if the pool would return less, the contract cancels the trade. Slippage is the gap between the expected and final price. It can grow when a pool has little liquidity, meaning fewer tokens are available to trade, or when the trade is large compared with the pool.

A wider slippage limit may let a trade through, but it also accepts a worse price. Check the token amounts and the expected return before changing it. A token can also impose transfer rules or reject a trade, so raising the limit will not fix every revert.

What should I check before retrying an Arbswap swap?

Use the transaction status and wallet balances to narrow down the cause. Check these in order:

• Network: Confirm the wallet is connected to the Arbitrum chain where the tokens are held.
• Gas: Check that the wallet has ETH for fees on Arbitrum One or Nova, as listed in Arbitrum’s FAQ.
• Token approval: Some tokens need a separate approval transaction before a DEX can use them. Check whether that approval succeeded.
• Quote and pool: Review the output amount, slippage setting and pool liquidity. If the price has moved, refresh the quote before deciding whether to retry.

Did the failed swap take my tokens?

If the transaction reverted, the swap did not complete, so it should not have exchanged the input tokens. The wallet may still show a gas charge because the network processed the failed transaction. Check the transaction record for its status and fee rather than relying only on a wallet notification. If the swap remains stuck as pending, check its status before submitting another one; a second request could create a separate transaction.

The useful distinction is whether the request was sent, then whether it executed. A missing transaction points to the wallet or connection. A revert points to the trade, token or pool conditions. Fix that specific cause before trying again; changing slippage alone is not a general repair for a failed swap.