My swap keeps failing
Every attempt reverts, sometimes before you even confirm.
What is actually happening
Usually slippage, a transfer tax, thin liquidity, or a missing approval. The DEX interface rarely tells you which.
How to fix it
- Check you have approved the token for the router first. Selling a token requires an approval transaction before the swap.
- Raise slippage in small steps. If the token charges a transfer tax, slippage must be above that tax.
- Reduce the trade size. Thin liquidity means a large order moves the price past your tolerance on its own.
- Try a different route or aggregator. Sometimes the pool the interface picked is simply too shallow.
A token that cannot be sold at any slippage while it can be bought freely is a honeypot. Stop and check the contract before spending more on gas.
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