What it does
1inch aggregates token liquidity and supports swaps between supported blockchains. Its Fusion order model lets competing resolvers fill a requested trade, while Market and Limit tools serve other order types. Portfolio tracking and developer APIs sit alongside the wallet-connected exchange.
An intent-based swap tells 1inch what you want to receive, then competing resolvers attempt to fill the order. The Fusion quote can move within the allowed price and time limits while the auction runs. An order may expire without a fill, so a pending request should not be treated as a completed purchase.
Connect a supported wallet, enter the token amounts and use Permit and swap or Approve tokens, depending on the asset. After permission is complete, select Swap, review the details and sign in the wallet. The connected-address menu provides order status. For a cross-chain swap, check both networks as well as the token names.
Costs depend on the route. The Swap interface usually has its execution gas paid by resolvers, but Solana swaps, native-token inputs and some small aggregator-routed trades require user-paid gas. Pro aggregator transactions also use user-paid network gas. Certain trades include infrastructure fees; the provider retains positive swap surplus. A gasless execution label therefore does not describe every route or every economic cost.
The separate Portfolio view helps inspect holdings and profit-and-loss information after trading. It is useful for monitoring positions, while the exchange remains dependent on available liquidity and correct wallet permissions.
Strengths
- Same-chain and cross-chain token exchange
- Order status and a separate portfolio view
- Public APIs for applications integrating swaps
Watch out for
- Fusion orders can expire without being filled
- Gas and infrastructure charges differ by execution route
- Positive execution surplus can be retained by the API provider
Best for
- Wallet users comparing aggregated routes across supported networks
Sources
- 1inch swaps, networks and portfolio tools (Oct 27, 2026)
- 1inch Fusion order execution and interface (Oct 27, 2026)
- 1inch gas, surplus and infrastructure fees (Oct 27, 2026)
