# 1inch Business Portal > This file provides a machine-readable index of 1inch Business Portal documentation > for AI agents, LLMs, and automation tools, following the llmstxt.org specification. > For full inlined content, see /portal/llms-full.txt Use this file for: Latest API versions, accurate endpoints, machine-readable integrations. - Supported chains: Ethereum, Solana, Base, Binance, zkSync, Gnosis, Optimism, Polygon, Linea, Sonic, Unichain, Arbitrum, Avalanche, Monad - Integration paths: REST APIs, SDKs, WebSockets, JSON-RPC, gRPC - MCP Server: https://api.1inch.com/mcp/protocol ## Overview - [1inch Business Portal Overview](https://business.1inch.com/portal/assets/docs-v2/overview.md): Welcome to the official 1inch Business Portal documentation hub. Here you'll find comprehensive guides and references to help you integrate,... ## SDKs - [Available SDKs](https://business.1inch.com/portal/assets/docs-v2/sdks/available-sdks.md): This section provides an overview of the 1inch SDKs available for building, integrating, and extending swap functionality across different... ## Authentication - [Authentication](https://business.1inch.com/portal/assets/docs-v2/apis/authentication.md): The 1inch Business API supports two authentication methods: 1. **API keys** - Simple bearer tokens for direct integrations 2. **OAuth 2.1** -... ## Swap API - [Swap API](https://business.1inch.com/portal/assets/docs-v2/apis/swap/swap.md): 1inch Swap API product offers 3 different execution modes, designed to cover different liquidity sources and cross-chain requirements: - Intent... - [Cross-Chain Swaps (Fusion+) Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/swap/cross-chain-swap/introduction.md): The 1inch Fusion+ API is a powerful solution for secure and efficient cross-chain swaps in DeFi that uses a creative architecture of Dutch... - [EVM -> EVM](https://business.1inch.com/portal/assets/docs-v2/apis/swap/cross-chain-swap/quick-start/evm-to-evm.md): This guide shows how to perform a cross-chain swap between two EVM chains using 1inch Fusion+. - You must have a valid **1inch API Key**. You can... - [EVM -> Solana](https://business.1inch.com/portal/assets/docs-v2/apis/swap/cross-chain-swap/quick-start/evm-to-solana.md): This guide shows how to perform a cross-chain swap from an EVM chain to Solana using 1inch Fusion+. - You must have a valid **1inch API Key**. You... - [Solana -> EVM](https://business.1inch.com/portal/assets/docs-v2/apis/swap/cross-chain-swap/quick-start/solana-to-evm.md): This guide shows how to perform a cross-chain swap from Solana to an EVM chain (e.g., Ethereum) using 1inch Fusion+. - You must have a valid... - [Orders (API Reference)](https://api.business.1inch.com/swagger-docs/fusion-plus/orders/swagger-json): Orders API provides access to active and historical orders (latest stable: v1.2) - [Quoter (API Reference)](https://api.business.1inch.com/swagger-docs/fusion-plus/quoter/swagger-json): Quoter API provides the access to Fusion+ price curves (latest stable: v1.2) - [Relayer (API Reference)](https://api.business.1inch.com/swagger-docs/fusion-plus/relayer/swagger-json): Relayer API accepts orders and distribute them across resolvers (latest stable: v1.2) - [SDK Overview](https://business.1inch.com/portal/assets/docs-v2/apis/swap/cross-chain-swap/sdk/overview.md): The 1inch Cross-Chain Swap SDK (Fusion+) provides high-level functionality for performing atomic cross-chain swaps between EVM chains. Fusion+... - [When and how to submit a secret](https://business.1inch.com/portal/assets/docs-v2/apis/swap/cross-chain-swap/sdk/when-and-how-to-submit-secrets.md): After placing a cross-chain order, the maker must monitor for escrow deployment and reveal cryptographic secrets to finalize the swap. This page... - [Swapping a native token with Cross-Chain Swap](https://business.1inch.com/portal/assets/docs-v2/apis/swap/cross-chain-swap/sdk/how-to-swap-native-tokens-cross-chain.md): With Cross-Chain Swap, you can perform a gasless cross-chain swap from a chain's native token (like ETH on Base) to an asset on another chain. For... - [Auction Calculator](https://business.1inch.com/portal/assets/docs-v2/apis/swap/cross-chain-swap/sdk/auction-calculator.md): The `AuctionCalculator` class computes taker amounts and auction rate bumps from a limit order struct. This is useful for understanding how the... - [WebSocket API](https://business.1inch.com/portal/assets/docs-v2/apis/swap/cross-chain-swap/sdk/web-socket-api.md): The WebSocket API enables real-time order tracking for cross-chain swaps. Instead of repeatedly polling the API for status updates, your... - [Intent Swap (Fusion) Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/introduction.md): 1inch Intent Swap API (Fusion mode) offers users a way to execute swaps without spending gas or risking being front-run. To the user, Fusion mode... - [Quick Start - Ethereum](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/quick-start/quick-start-ethereum.md): This guide shows how to use Intent Swap (Fusion mode) to perform a gasless swap from native ETH to USDC on Ethereum. You will use the 1inch Fusion... - [Quick Start - Solana](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/quick-start/quick-start-solana.md): This guide shows how to use Intent Swap (Fusion mode) to perform a gasless swap from native SOL to JUP on Solana. You will use the 1inch Solana... - [Orders (API Reference)](https://api.business.1inch.com/swagger-docs/fusion/orders/swagger/ethereum-json): Ethereum Network1inch Fusion Open API - Gasless swap protocol for intent-based trading (latest stable: v2.0) - [Quoter (API Reference)](https://api.business.1inch.com/swagger-docs/fusion/quoter/swagger/ethereum-json): Ethereum Network1inch Fusion Open API - Gasless swap protocol for intent-based trading (latest stable: v2.0) - [Relayer (API Reference)](https://api.business.1inch.com/swagger-docs/fusion/relayer/swagger/ethereum-json): Ethereum Network1inch Fusion Open API - Gasless swap protocol for intent-based trading (latest stable: v2.0) - [Solana Overview](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/sdk/solana/overview.md): The 1inch Solana Fusion SDK enables token swaps on Solana with ultra-fast transactions and minimal fees. Unlike EVM chains where orders are signed... - [Filling and canceling Solana Fusion order](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/sdk/solana/filling-and-canceling-solana-fusion-order.md): Fusion orders on Solana have a defined lifecycle that includes filling by resolvers and cancellation options. Understanding this lifecycle helps... - [WebSocket API](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/sdk/solana/web-socket-api.md): The WebSocket API provides real-time order tracking on Solana. For applications that need instant feedback on order status, WebSocket eliminates... - [EVMs Overview](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/sdk/evms/overview.md): The 1inch Intent Swap SDK provides high-level functionality to work with Fusion mode on EVM-compatible chains. Fusion enables gasless swaps where... - [Swapping a Native Token to ERC-20](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/sdk/evms/swapping-a-native-token-to-ERC-20.md): With Intent Swap, you can swap a chain's native token (like ETH on Ethereum) to any ERC-20 token. This is ideal for users who hold only native... - [Swapping with Permit2](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/sdk/evms/swapping-with-permit2.md): Permit2 is Uniswap's universal token approval system that enables gasless approvals after a one-time setup. Instead of approving each protocol... - [WebSocket API](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/sdk/evms/websocket-api.md): The WebSocket API enables real-time order tracking for production applications. Instead of repeatedly polling the API for status updates, your... - [Classic Swap Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/swap/classic-swap/introduction.md): The 1inch classic swap API (Pathfinder v6.1) is a cutting-edge discovery and routing algorithm that offers asset exchanges at the best rates on... - [Classic Swap Quick start](https://business.1inch.com/portal/assets/docs-v2/apis/swap/classic-swap/quick-start.md): Let's go over an example of how to perform a token swap using the **1inch Classic Swap API**. --- - You must have a valid **1inch API Key**. You... - [Classic Swap Methods (API Reference)](https://api.business.1inch.com/swagger-docs/swap/swagger/ethereum-json): Ethereum Network Using 1inch Swap API, you can find the best route to exchange assets and make the exchange. Step by step: 1. Lookup addresses of toke - [Swap RWAs](https://business.1inch.com/portal/assets/docs-v2/apis/swap/real-world-assets-support.md): Real-world assets are tokenized representations of traditional financial instruments made accessible on-chain. In the case of Ondo-backed and... ## Orderbook API - [Orderbook API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/orderbook/introduction.md): 1inch Orderbook API is using the 1inch [Limit Order Protocol](https://github.com/1inch/limit-order-protocol), which is a set of smart contracts... - [Orderbook API Quickstart](https://business.1inch.com/portal/assets/docs-v2/apis/orderbook/quick-start.md): This guide shows how to create and submit a Limit Order v4 using the [@1inch/limit-order-sdk](https://github.com/1inch/limit-order-sdk) on... - [Orderbook API Methods (API Reference)](https://api.business.1inch.com/swagger-docs/orderbook/swagger/ethereum-json): Ethereum NetworkAPI for post and select limit orders to the 1inch limit orders database.The database acts as a source of liquidity for the 1inch Aggre - [SDK Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/orderbook/sdk/introduction.md): The [limit-order-sdk](https://github.com/1inch/limit-order-sdk) is a TypeScript library developed by 1inch that enables developers to build, sign,... - [Querying the Orderbook](https://business.1inch.com/portal/assets/docs-v2/apis/orderbook/sdk/querying-the-orderbook.md): The Limit Order SDK provides a built-in `Api` class for querying orders from the 1inch Orderbook. You can retrieve orders by hash, by maker... - [Advanced usage](https://business.1inch.com/portal/assets/docs-v2/apis/orderbook/sdk/advanced-usage.md): The [limit-order-sdk](https://github.com/1inch/limit-order-sdk) can be used not only to integrate with the 1inch Orderbook, but also as a toolkit... ## History API - [History API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/history/introduction.md): History API allows you to access accurate transaction history data across several major networks. With it, you can get such information as: -... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/history/quick-start.md): This guide will walk you through on how you can seamlessly retrieve and display wallet transactions by using the wallet history API. - Node.js and... - [History API Methods (API Reference)](https://api.business.1inch.com/swagger-docs/history/v2.0/history/1/swagger-json): History of transactions for the user ## Traces API - [Traces API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/traces/introduction.md): The 1inch Trace API provides comprehensive, step-by-step data on every operation within on-chain transactions. This empowers developers and... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/traces/quick-start.md): 1inch's Transaction Traces API provides users with an efficient way to access transaction traces for different chains. Before fetching any... - [Traces API Methods (API Reference)](https://api.business.1inch.com/swagger-docs/traces/v1.0/chain/1/swagger-json): Indexer for transaction traces based on debug_traceBlockByNumber and debug_traceTransaction JSON-RPC methods ## Portfolio API - [Portfolio API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/portfolio/introduction.md): The 1inch Portfolio API aggregates and presents detailed information for web3 assets across multiple wallets and chains. By leveraging this API,... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/portfolio/quick-start.md): Base URL (unified gateway at `https://api.1inch.com`): `https://api.1inch.com/portfolio/portfolio/v5.0` The OpenAPI paths for the Portfolio... - [Portfolio API Methods (API Reference)](https://api.business.1inch.com/swagger-docs/portfolio/v5.0/openapi.json): API reference for Methods ## Balance API - [Balance API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/balance/introduction.md): The 1inch Balance API provides real-time, accurate information about token balances and allowances across multiple chains. This API is essential... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/balance/quick-start.md): In this tutorial, we will create a simple Python script to check the token balances of a given wallet address using the 1inch Balance API. We'll... - [Balance API Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/swagger/balance/ethereum.json): API for retrieving token balances and allowances (latest stable: v1.2) ## Gas Price API - [Gas Price API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/gas-price/introduction.md): The 1inch Gas Price API provides real-time, accurate gas price data across various blockchains, enabling developers and users to make informed... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/gas-price/quick-start.md): Here we're going to run through a full stack tutorial on the Gas Price API As a background here is an short brief into the three parameters we... - [Gas Price API Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/swagger/gas-price/ethereum.json): Using 1inch Gas Price API, you can get optimized gas price from network. (latest stable: v1.6) ## Spot Price API - [Spot Price API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/spot-price/introduction.md): The Spot Price API provides real-time token price data across multiple blockchains. This provides your users with accurate pricing information in... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/spot-price/quick-start.md): The 1inch Spot Price API allows you to retrieve on-chain prices of tradable tokens on the Ethereum network. All prices are presented in the native... - [Spot Price API Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/swagger/price/ethereum.json): Ethereum Network Using 1inch token prices API, you can find out onchain price of tradable tokens. All prices present in native currency WEI. (latest s - [Oracle Deployment Guide](https://business.1inch.com/portal/assets/docs-v2/apis/spot-price/oracle-deployment-guide.md): This section provides a comprehensive guide on deploying an oracle, including the nuances of script parameters and additional setup steps. Follow... ## Token API - [Token API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/tokens/introduction.md): The Token API retrieves comprehensive token information and allows users to search for token data using a token's name, address, or symbol. This... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/tokens/quick-start.md): In this tutorial, we will walk you through the process of using the 1inch Token API with Python and the `requests` library. We'll cover how to... - [Token API Methods (API Reference)](https://api.business.1inch.com/swagger-docs/token/swagger-json): API for retrieving token information across multiple blockchain networks. Provides endpoints for token lists, search, and token metadata. v1.4 is the ## NFT API - [NFT API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/nft/introduction.md): Get expanded data on users' NFTs. The NFT API is designed to meet the needs of NFT platform developers and provides direct streamlined access to... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/nft/quick-start.md): The 'List NFTs' API demo will walk you through on how users can seamlessly retrieve and display a curated selection of non-fungible tokens (NFTs)... - [NFT API Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/swagger/nft/nft.json): API for retrieving NFT metadata, ownership information, and collection details across multiple blockchain networks. Aggregates data from OpenSea, Rari ## Transaction Gateway API - [Transaction Gateway API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/transaction/introduction.md): The Transaction Gateway API provides reliable on-chain transaction broadcasting, supporting both public and private modes. This enables developers... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/transaction/quick-start.md): In this tutorial, we will guide you through the process of using the 1inch Transaction Gateway API with Python and the `requests` library. The... - [Transaction Gateway API Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/swagger/transaction/ethereum.json): Ethereum Network1inch Transaction Gateway Open API ## Charts API - [Charts API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/charts/introduction.md): The 1inch Charts API is designed to provide easy retrieval and display of chart data for onchain assets, including ERC20 tokens, NFTs, and more.... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/charts/quick-start.md): This guide will help you set up a project to retrieve and display chart data using the 1inch Charts API. You'll create a Node.js backend to handle... - [Charts API Methods (API Reference)](https://api.business.1inch.com/swagger-docs/charts/swagger-json): Charts API API provides with access to historical candle and line charts Supported network: Ethereum, Binance Chain, Polygon ## Domains API - [Domains API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/domains/introduction.md): The Domains API enables seamless interaction with blockchain-based domain services, providing tools to resolve and retrieve domain information for... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/domains/quick-start.md): --- sidebar_position: 2 --- This guide will walk you through retrieving data from providers such as ENS, LENS, and UD using the Domains API. -... - [Domains API Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/swagger/domains/swagger.json): API for domain resolution and reverse lookup across ENS, Unstoppable Domains, and Lens Protocol (latest stable: v2.0) ## Token Details API - [Token Details API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/token-details/introduction.md): The Token Details API is a versatile set of endpoints designed to provide developers with in-depth insights about tokens and native tokens. This... - [Quickstart guide](https://business.1inch.com/portal/assets/docs-v2/apis/token-details/quick-start.md): The Token Details API demo will walk you through how users can seamlessly retrieve and display token price changes from the past week. - Node.js... - [Token Details API Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/swagger/token-details/swagger.json): API for retrieving token details, charts, and price information ## Web3 RPC API - [Web3 RPC API Introduction](https://business.1inch.com/portal/assets/docs-v2/apis/web3/overview.md): The Web3 RPC API provides you with an easy way to maintain a constant, secure connection to the blockchain. These nodes provide reliable,... - [Arbitrum Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/arbitrum_execution_api.json): OpenRPC schema for Arbitrum execution layer methods. Generated from verified provider method unions. - [Avalanche Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/avalanche_execution_api.json): OpenRPC schema for Avalanche execution layer methods. Generated from verified provider method unions. - [Base Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/base_execution_api.json): OpenRPC schema for Base execution layer methods. Generated from verified provider method unions. - [BNB Chain Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/bnb_execution_api.json): OpenRPC schema for Bnb execution layer methods. Generated from verified provider method unions. - [Cronos Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/cronos_execution_api.json): OpenRPC schema for Cronos execution layer methods. Generated from verified provider method unions. - [Ethereum Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/ethereum_execution_api.json): OpenRPC schema for Ethereum execution layer methods. Generated from verified provider method unions. - [Gnosis Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/gnosis_execution_api.json): OpenRPC schema for Gnosis execution layer methods. Generated from verified provider method unions. - [Linea Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/linea_execution_api.json): OpenRPC schema for Linea execution layer methods. Generated from verified provider method unions. - [Monad Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/monad_execution_api.json): OpenRPC schema for Monad execution layer methods. Generated from verified provider method unions. - [Optimism Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/optimism_execution_api.json): OpenRPC schema for Optimism execution layer methods. Generated from verified provider method unions. - [Polygon Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/polygon_execution_api.json): OpenRPC schema for Polygon execution layer methods. Generated from verified provider method unions. - [Solana gRPC](https://business.1inch.com/portal/assets/docs-v2/apis/web3/solana/solana-grpc.md): Yellowstone gRPC enables real-time Solana blockchain data streaming through gRPC interfaces. Stream accounts, transactions, blocks, and slots with... - [Solana Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/solana_execution_api.json): A specification of the standard interface for Solana clients (Chain ID 501). - [Sonic Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/sonic_execution_api.json): OpenRPC schema for Sonic execution layer methods. Generated from verified provider method unions. - [Unichain Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/unichain_execution_api.json): OpenRPC schema for Unichain execution layer methods. Generated from verified provider method unions. - [ZKsync Methods (API Reference)](https://business.1inch.com/portal/assets/docs-assets-v2/openrpc/web3/zksync_execution_api.json): OpenRPC schema for Zksync execution layer methods. Generated from verified provider method unions. ## Resolvers - [Resolvers Introduction](https://business.1inch.com/portal/assets/docs-v2/resolvers/introduction.md): Welcome to the onboarding guide for becoming a Resolver in the 1inch ecosystem. This document outlines the self-service onboarding process and... - [Terms of Use Resolver Terms](https://business.1inch.com/portal/assets/docs-v2/resolvers/terms-of-use.md): The document defines eligibility, obligations, and compliance requirements for approved resolvers. Explore the... - [Limit Order Quick Start](https://business.1inch.com/portal/assets/docs-v2/resolvers/limit-order/quick-start-for-limit-order.md): Once verified, it's time to integrate. The following resources will help you start fast: - [Limit Order Protocol Extension... - [Contract interaction](https://business.1inch.com/portal/assets/docs-v2/resolvers/limit-order/contracts-interaction.md): | Name | Contract | Address ... - [Resolver farming guide](https://business.1inch.com/portal/assets/docs-v2/resolvers/limit-order/resolver-farming-guide.md): As a resolver, offering farm incentives to delegators can help increase your Unicorn Power balance and consequently, your probability of filling... - [Unicorn Power setup](https://business.1inch.com/portal/assets/docs-v2/resolvers/limit-order/unicorn-power-setup.md): These steps initialize Unicorn Power farming: 1. Approve staking 1INCH for 1inch contract. 2. Stake 1INCH to gain Unicorn Power. 3. Add a... - [Evm quicklinks](https://business.1inch.com/portal/assets/docs-v2/resolvers/intent/evm.md): Once verified, it's time to integrate. Start exploring [Swap APIs technical documentation](/documentation/apis/swap/intent-swap/introduction) to... - [Solana quicklinks](https://business.1inch.com/portal/assets/docs-v2/resolvers/intent/solana.md): Once verified, it's time to integrate. The following resources will help you start fast: - [Solana Intent Swaps... - [Cross chain examples](https://business.1inch.com/portal/assets/docs-v2/resolvers/cross-chain/cross-chain-test-examples.md): This section provides a practical, end-to-end overview of working with the **1inch Cross-Chain Swaps** infrastructure from a resolver perspective.... - [Exclusive Resolver API Terms](https://business.1inch.com/portal/assets/docs-v2/resolvers/exclusive-resolver-terms.md): The Exclusive Resolver API is a new feature available for resolvers within the 1inch Fusion mode. This API allows a 1inch Fusion resolver to be... ## FAQ - [API Error Messages](https://business.1inch.com/portal/assets/docs-v2/faq/api-error-messages-explained.md): If you're encountering issues with our API, this guide will help you understand some common error messages and their meanings. _Please note: This... - [API Troubleshooting](https://business.1inch.com/portal/assets/docs-v2/faq/api-troubleshooting.md): As of August 2023, all free public API usage has been reduced to 1 requests per second (rps). :::info For workloads that require higher RPS,... - [Cors errors](https://business.1inch.com/portal/assets/docs-v2/faq/cors-error-faq.md): When integrating the 1inch API in your dApp, you might experience an issue with CORS (Cross-Origin Resource Sharing). It can be confusing,... - [Tx input data](https://business.1inch.com/portal/assets/docs-v2/faq/how-to-read-tx-input-data.md): In this article, we'll learn how to read and decode the raw calldata that's passed to Ethereum smart contracts. The calldata contains the function... - [Infrastructure fees](https://business.1inch.com/portal/assets/docs-v2/faq/infrastructure-fee.md): Infrastructure fees apply to Swap API transactions. These fees are deducted from the destination amount of each completed Network Request and are... ## AI Integration - [Ecosystem](https://business.1inch.com/portal/assets/docs-v2/ai-integration/ecosystem.md): 1inch provides two complementary AI integration methods: the **MCP Server** -- a live protocol your AI assistant uses to execute swaps, place... - [Supported Clients](https://business.1inch.com/portal/assets/docs-v2/ai-integration/supported-clients.md): The 1inch [MCP Server](ecosystem.md) and [AI Skills](ecosystem.md#ai-skills) work with a wide range of AI coding assistants. This page covers... ## Optional - [Migration from v1.0 to v2.0](https://business.1inch.com/portal/assets/docs-v2/apis/swap/intent-swap/migration/migration-v10-v20.md): Following changes must be done to migrate from v1.0 to v2.0 Adding of parameter:\ `isPermit2`: permit2 allowance transfer encoded call Removing of... - [Migration from v5.0 to v5.2](https://business.1inch.com/portal/assets/docs-v2/apis/swap/classic-swap/migration/migration-v50-v52.md): Following changes must be done to migrate from v5.0 to v5.2 Renaming of parameter:\ `fromTokenAddress` -> `src`\ `toTokenAddress` -> `dst`... - [Migration from v5.2 to v6.0](https://business.1inch.com/portal/assets/docs-v2/apis/swap/classic-swap/migration/migration-v52-v60.md): Renaming of parameter:\ `fromToken` -> `srcToken`\ `toToken` -> `dstToken`\ `toAmount` -> `dstAmount` `usePermit2: boolean` - use Permit2 for approval - [Migration from v6.0 to v6.1](https://business.1inch.com/portal/assets/docs-v2/apis/swap/classic-swap/migration/migration-v60-v61.md): The following changes must be made when migrating from v6.0 to v6.1. - The `protocols[][][]` structure remains, but the format of protocol data... - [Migration V3 - V4](https://business.1inch.com/portal/assets/docs-v2/apis/orderbook/migration/migration-v3-v4.md): Following changes must be done to migrate from v3.0 to v4.0 - `statuses`: change from `array` (`[1,2,3]`) to `comma-separated list` (`1,2,3`) -... - [Migration from v4 to v5.0](https://business.1inch.com/portal/assets/docs-v2/apis/portfolio/migration/migration-v40-v50.md): **V5 introduces a fundamental separation between `snapshot` and `metrics`:** - `snapshot` -- a state at a specific point in time - `metrics` --...