1inch is an intent-based DEX aggregator for multi-chain token swaps

1inch is an intent-based DEX aggregator that finds efficient crypto swap routes across decentralized exchanges and supported networks, including Ethereum, BNB Chain, Polygon, Optimism, Arbitrum, Avalanche, Base, Linea, Unichain, Sonic, Solana, and more. Its core value is routing: it compares liquidity sources, splits orders when that improves execution, and gives the user a quoted swap path before the wallet signature commits the trade.

The service became known for aggregation because decentralized liquidity is fragmented. A token pair might trade on Uniswap, Curve, Balancer, PancakeSwap, Sushi, or another venue, and the best execution path changes as pools move. Rather than treating one pool as the market, the protocol checks many pools and builds a transaction that aims to deliver the strongest output after price impact and network costs are considered.

The swap route is assembled before the wallet signature

A normal token swap begins with a connected self-custody wallet , a source asset, a destination asset, and an amount. The aggregator then calculates possible routes through liquidity pools and market makers. Some trades use a single pool; larger or less liquid trades get split across several venues so that no single pool absorbs the entire order. The quote shows the expected received amount, route details, gas estimate, slippage setting, and token approval requirement.

This matters because automated market maker pools do not hold fixed prices. Their exchange rates move with pool balances. A route that looks good for a small trade turns expensive when the order size rises. 1inch addresses that problem by comparing executable paths at the size the user actually enters, so the quote reflects the trade being placed rather than a generic spot price.

Fusion and intents change who handles execution

Fusion is the intent-based part of the system. The user expresses the desired swap, and professional resolvers compete to fill it under the rules of the order. The resolver handles execution details and receives compensation through the spread or auction mechanics, while the user signs an order that defines the assets, amount, and acceptable outcome. This structure reduces the amount of direct transaction management the trader handles during execution.

Intent-based swaps also help with routing across complex liquidity. Instead of relying only on a single on-chain transaction path selected by the user interface, the signed intent gives specialized actors room to source liquidity and settle the order efficiently. The user still needs a compatible wallet, enough source tokens, and the correct network context, but the heavy execution work shifts to the resolver side of the market.

Cross-chain swaps remove the bridge step from the user flow

Cross-chain swaps are one of the clearest reasons people search for 1inch. The flow is built around moving value between more than 13 supported networks without asking the user to operate a separate bridge. A trade such as swapping a token on Ethereum into an asset on Base or Solana becomes a single swap workflow from the user perspective, with the route and settlement handled by the protocol design.

That distinction is practical. Bridges introduce extra screens, wrapped assets, waiting periods, destination gas issues, and different security assumptions. The cross-chain model focuses on the desired end state: spend this asset on one network and receive that asset on another. Before signing, the user reviews the quoted output, destination chain, wallet address, and any approval request, because a wrong chain or token contract changes the trade outcome.

Supported networks cover EVM chains and Solana

The network list includes major EVM ecosystems such as Ethereum, BNB Chain, Polygon, Optimism, Arbitrum, Gnosis, Avalanche, ZKsync Era, Base, Linea, Unichain, and Sonic, plus Solana. That mix is important because liquidity lives in different places. Stablecoin depth, wrapped Bitcoin markets, liquid staking tokens, and newer assets do not distribute evenly across chains.

Gas tokens also differ by network. Ethereum uses ETH, BNB Chain uses BNB, Polygon uses POL, Avalanche uses AVAX, and Solana uses SOL. A user signing an on-chain transaction needs the relevant gas asset when the transaction requires direct network payment. With Fusion-style execution, some gas handling is abstracted, but wallet setup and destination chain selection remain part of the workflow.

Limit orders, portfolio views, and the mobile wallet

The ecosystem goes beyond the basic swap screen. The limit order feature lets a user set a target price for a token exchange and wait for execution when market conditions match the order. That is useful when a trader wants a defined rate rather than immediate market execution. Market and terminal-style views give more detail for active traders who compare routes, assets, and liquidity conditions across decentralized venues.

1inch Wallet brings swaps, token storage, and portfolio tracking into a mobile experience. The portfolio product focuses on holdings, profit and loss, liquidity protocol exposure, and DeFi positions. There is also a card product tied to spending crypto in everyday payment flows, and a business API suite for teams that need swap routing, token data, RPC infrastructure, or other Web3 building blocks.

MEV protection matters on public mempools

Public blockchains expose pending transactions before they are finalized. That visibility creates room for front-running, back-running, and sandwich attacks, especially around swaps with visible slippage tolerance. The platform's security messaging centers on MEV protection, wallet screening, risk scoring, scam protection, and blocklists that reduce exposure to malicious tokens or abusive routing behavior.

Slippage deserves careful attention. A very tight slippage setting rejects trades when prices move; an overly wide setting gives execution more room to drift from the quote. The right setting depends on token liquidity and trade size. Thin assets and volatile markets require extra scrutiny because price impact and malicious token contracts create losses that a clean-looking interface does not erase.

The 1INCH token belongs to governance, not gas

The 1INCH token is associated with protocol governance and ecosystem participation. It is not the gas token for the supported networks. Transactions still settle on their underlying chains, which means gas comes from ETH, BNB, POL, AVAX, SOL, or another native asset depending on where the transaction lands. That separation avoids a common misunderstanding: holding the governance token does not replace the need for network fees .

Governance tokens also trade independently from the usefulness of a product. A swap aggregator can route large volume while its token price moves with broader market cycles, emissions, governance expectations, and liquidity. Users evaluating the application for swaps should judge execution quality, supported assets, route transparency, and wallet safety separately from speculation around the token.

When a direct DEX, centralized exchange, or aggregator fits better

Direct DEX trading works well when a user already knows the exact pool they want, such as a deep Curve stablecoin pool or a concentrated liquidity position on Uniswap. A centralized exchange fits order-book trading, fiat deposits, and custody-based account features. An aggregator is strongest when the user wants the market scanned across many decentralized liquidity sources before signing.

The right choice starts with the trade shape. A small swap between highly liquid assets works almost anywhere. A large swap, a long-tail token, or a cross-chain move benefits more from aggregation because fragmented liquidity has a larger effect on execution quality.

A clean first swap starts with approvals and route review

Connect a wallet, choose the source network, select the token being sold, and enter the amount. Then pick the token and destination network. The quote page should show the expected output, minimum received amount, route, gas estimate, and approval status. If the token has never been used with the swap contract, the wallet asks for an approval before the swap itself is signed.

Approval size is a security decision. Unlimited approvals reduce repeated prompts, while exact approvals limit the amount a contract is allowed to move. After the approval and swap are complete, the received asset appears on the destination network or in the same wallet account, based on the selected route. 1inch is most useful when the user treats the quote as a transaction preview, not merely as a button to press.