1inch Swap API product offers 3 different execution modes, designed to cover different liquidity sources and cross-chain requirements:
- Intent Based Swaps
- Classic Swaps
- Cross Chain Swaps
Supported Chains
| Supported Chains | Chain ID | Classic SWAP | Intent based SWAP | Cross-chain SWAP |
|---|---|---|---|---|
| Ethereum | 1 | ✅ | ✅ | ✅ |
| Solana | 501 | ❌ | ✅ | ✅ |
| Base | 8453 | ✅ | ✅ | ✅ |
| BNB | 56 | ✅ | ✅ | ✅ |
| zkSync | 324 | ✅ | ✅ | ✅ |
| Gnosis | 100 | ✅ | ✅ | ✅ |
| Optimism | 10 | ✅ | ✅ | ✅ |
| Cronos | 25 | ✅ | ✅ | ✅ |
| Polygon | 137 | ✅ | ✅ | ✅ |
| Monad | 143 | ✅ | ✅ | ✅ |
| Linea | 59144 | ✅ | ✅ | ✅ |
| Sonic | 146 | ✅ | ✅ | ✅ |
| Unichain | 130 | ✅ | ✅ | ✅ |
| Arbitrum | 42161 | ✅ | ✅ | ✅ |
| Avalanche | 43114 | ✅ | ✅ | ✅ |
| HyperEVM | 999 | ✅ | ✅ | ✅ |
| Arc | 5042 | ✅ | ✅ | ✅ |
| Robinhood Chain | 4663 | ✅ | ✅ | ✅ |
Supported Features
| Supported Features | Classic SWAP | Intent based SWAP | Cross-chain SWAP |
|---|---|---|---|
| Gasless | ❌ | ✅ | ✅ |
| RWAs | ✅ | ✅ | ✅ |
| MEV Protection | ❌ | ✅ | ✅ |
| SDKs | ❌ | Intent EVM SDK, Intent Solana SDK | Cross-chain SDK |
| AI Integration | ✅ | ✅ | ✅ |
| Integrator Fee | ✅ | ✅ | ✅ |
RWAs (tokenized real-world assets) are supported across Classic, Intent, and Cross-chain swap modes, and via the Orderbook API (limit orders). Availability differs by tokenized asset — issuer, network, eligibility, market hours, and liquidity can vary. See Real-world assets support.
AI Integration enables AI agents and coding assistants to discover, understand, and execute swaps through the 1inch MCP Server. Agents connected via the Model Context Protocol can search documentation, retrieve production-ready SDK examples, and build agentic swap workflows from intent submission to resolver execution, without manual research.
Integrator Fee is a configurable fee that allows integration partners to earn a commission on transactions routed through the 1inch swap infrastructure. The integrator fee can be specified as a parameter in API requests or configured via the corresponding SDK implementations.
Intent Based Swaps
Gasless, MEV-resistant swaps executed through a competitive resolver network.
Fusion mode allows users to submit swap intents that are filled by third-party resolvers. Orders are executed using a dynamic pricing mechanism that protects users from front-running and eliminates the need to pay gas fees directly.
Best for: Gas-efficient swaps, MEV protection, large or price-sensitive trades.
Learn more : Intent Swap specs
Classic Swaps
Classic swaps provide maximum flexibility and control over swap parameters and execution behavior. This mode is equivalent to Pro mode in trading interfaces and is intended for advanced integrators who want full freedom of configuration.
Best for: Advanced trading logic, fine-grained parameter control, immediate execution. Learn more : Classic Swap specs
Cross-Chain Swaps
Seamless swaps across multiple blockchains with no bridging and fast execution time.
Cross-chain swaps enable users to exchange assets between different networks through a unified API, abstracting away bridging complexity and cross-chain execution logic.
Best for: Multi-chain applications, asset migration, Solana - EVMs cross-ecosystem liquidity access. Learn more : Cross-chain Swap specs