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OKX DEX SDK Hero Light

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What is OKX DEX SDK?

OKX DEX SDK is a powerful TypeScript library that enables developers to build sophisticated decentralized exchange applications across 6+ blockchain networks. Execute token swaps, access real-time quotes, and leverage OKX’s advanced trading infrastructure with just a few lines of code. The SDK abstracts away the complexity of interacting with multiple blockchain protocols, providing a unified interface for:
  • EVM-compatible chains (Ethereum, Base, Polygon, Arbitrum, Optimism, and 20+ more)
  • Solana - High-performance blockchain
  • Sui - Move-based smart contract platform
  • TON - Telegram Open Network
  • TRON - High-throughput blockchain

Installation

Get started by installing the SDK via npm, yarn, or pnpm

Quickstart

Execute your first token swap in under 5 minutes

API Reference

Explore the complete API documentation

GitHub Repository

View the source code and contribute

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Why OKX DEX SDK?

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Multi-Chain Aggregation

Stop writing separate integrations for each blockchain. The SDK provides a single, consistent API that works across all supported networks. Switch from Ethereum to Solana by changing just one parameter.

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Enterprise-Grade Infrastructure

Benefit from OKX’s proven trading infrastructure:
  • MEV Protection - Safeguard against front-running and sandwich attacks
  • Smart Order Routing - Automatically find the best prices across DEXs
  • Real-time Liquidity - Access deep liquidity pools across protocols
  • Transaction Broadcasting - Direct submission through OKX infrastructure for faster execution

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Developer Experience First

Complete type safety with IntelliSense support. Catch errors at compile time, not runtime.
Automatic retries with exponential backoff for network failures and rate limits.
Detailed error messages with actionable insights. Know exactly what went wrong and how to fix it.
Ready-to-use code samples for every chain and use case. Copy, paste, and customize.

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Core Features

Token Swaps

Execute swaps across 25+ blockchains with automatic routing and slippage protection

Real-time Quotes

Get accurate pricing, route information, and price impact calculations

Token Approvals

Automated ERC-20 approval handling with proper allowance management

Gas Estimation

Accurate gas limit calculation using onchain data

Transaction Simulation

Pre-execution validation and risk assessment before submitting transactions

Order Tracking

Real-time transaction status monitoring and history

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Solving DEX Aggregation Complexity

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The Problem

Building multi-chain DEX applications is challenging:
  • Each blockchain has different APIs, wallet formats, and transaction structures
  • Finding the best swap routes requires querying multiple DEX protocols
  • Managing slippage, gas fees, and MEV protection adds complexity
  • Handling errors and edge cases across chains is time-consuming

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The Solution

OKX DEX SDK solves these challenges by:
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Unified Interface

One API for all chains. Same methods, same parameters, consistent behavior.
2

Smart Routing

Automatically finds the best prices by checking multiple DEXs and liquidity sources.
3

Built-in Protection

Slippage protection, MEV mitigation, and transaction simulation built into the SDK.
4

Production Ready

Battle-tested infrastructure handling millions in daily volume.

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Supported Networks

The SDK supports 25+ blockchain networks with full swap, quote, and approval functionality:

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Major EVM Chains

  • Ethereum (Chain ID: 1)
  • Base (Chain ID: 8453)
  • Polygon (Chain ID: 137)
  • Avalanche (Chain ID: 43114)
  • BSC (Chain ID: 56)
  • Arbitrum (Chain ID: 42161)
  • Optimism (Chain ID: 10)

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Layer 2 & Scaling Solutions

  • Polygon zkEVM (1101)
  • zkSync Era (324)
  • Linea (59144)
  • Scroll (534352)
  • Mantle (5000)
  • Blast (81457)
  • Sonic (146)

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Other EVM Networks

  • Fantom, Gnosis, X Layer, Manta Pacific, Metis, Cronos, and more

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Non-EVM Chains

  • Solana (501)
  • Sui (784)
  • TON (607)
  • TRON (195)
All EVM chains support the full feature set: swaps, quotes, approvals, broadcasting, and order tracking.

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What You Can Build

DEX Aggregators

Build your own DEX aggregator UI that finds the best prices across protocols

Trading Bots

Automate trading strategies with programmatic access to DEX liquidity

Portfolio Managers

Create multi-chain portfolio management tools with automated rebalancing

Payment Solutions

Build payment systems that accept any token and auto-convert to preferred assets

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Next Steps

Ready to start building?

Install the SDK and execute your first swap in minutes

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