0x Protocol
0x provides battle-tested APIs and smart contracts to enable fast, efficient, and composable decentralized crypto trading across multiple chains.
Overview
0x is an open-source protocol and suite of APIs designed to facilitate decentralized crypto asset trading with deep liquidity and composability. It aggregates liquidity from over 130 decentralized exchanges (DEXs) and liquidity sources, enabling developers to embed token swaps and trading functionality directly into their applications with minimal integration effort. The platform supports multiple EVM-compatible chains including Ethereum, Polygon, Arbitrum, Optimism, Binance Smart Chain, Avalanche, and others, with plans for cross-chain support.
The core offering includes the Swap API for embedding token swaps, the Gasless API which enables users to trade without needing to hold gas tokens, and the Trade Analytics API for real-time insights into trading activity and revenue metrics. 0x emphasizes fast response times (<250ms median) and high uptime (99.92%), backed by secure and audited smart contract infrastructure. Developers can quickly generate API keys and manage apps from a unified dashboard, enabling rapid prototyping and deployment.
What sets 0x apart is its modular, composable architecture that allows developers to build custom DeFi experiences by combining various building blocks. Its extensive liquidity aggregation ensures users get the best prices with smart order routing. The protocol is battle-tested since 2017 and powers over 521 projects, processing more than 78 million transactions and $140 billion in volume. Notable integrations include Coinbase Wallet, Matcha DEX aggregator, Trust Wallet, and innovative SocialFi platforms like Bankr and Interface. Comprehensive documentation, code examples, and video tutorials support developers from onboarding to monetization strategies.
Getting started involves creating an account on the 0x Dashboard, selecting a pricing plan, setting up your app, and generating API keys. Developers can embed swaps with just a few lines of code and leverage monetization options such as setting trade fees or capturing positive slippage. The open-source nature and active community channels including Discord and forums provide ongoing support and collaboration opportunities.
The Problem
Developers face challenges integrating decentralized token swaps with deep liquidity, low latency, and seamless user experience. Gas fees and complex DeFi interactions often cause user drop-off and poor conversion rates. Additionally, gaining actionable insights into trading behavior and revenue streams is difficult without specialized analytics.
The Solution
Key Features
Swap API
Embed token swaps in any app with minimal code and fast integration.
Gasless API
Simplify user onboarding by removing gas fee requirements for trades.
Trade Analytics API
Access detailed on-chain trade data and metrics for business intelligence.
Multi-chain support
Supports Ethereum, Polygon, Arbitrum, Optimism, Binance Smart Chain, Avalanche, and more.
Monetization options
Set trade fees or capture positive slippage to generate revenue from order flow.
Key Strengths
How Developers Use 0x Protocol
Embedding token swaps in DeFi wallets
Wallet developers integrate 0x Swap API to offer users seamless token trading without leaving the app.
Building gasless trading dapps
Developers use the Gasless API to create frictionless swap experiences that remove gas fee barriers for end users.
Analyzing trade flows for revenue optimization
Product teams leverage the Trade Analytics API to monitor user behavior, track revenue, and optimize monetization strategies.
Works Well WithEthereum
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Pricing
Starter | Growth | |
|---|---|---|
| Price (Monthly) | Free | Custom pricing |
| Price (Annual) | Free | Custom pricing |
| Messaging | N/A | N/A |
| Support | Community support via Discord and GitHub | Dedicated support and SLAs |
| Analytics |
Resources
0x provides extensive developer resources including comprehensive documentation, code examples, video tutorials, and an active community forum and Discord. These resources cover everything from basic swap integration to advanced gasless trading and analytics usage.