Guides

This page lists the most popular guides to get started building with 0x based on your use case

Swap API

Easily add liquidity aggregation into your app with a single API. Access 100+ exchanges and thousands of tokens with the Swap API.

(Next.js) 0x Demo App - Example ERC20 swapping app made with 0x Swap API, Next.js, and ConnectKit
(HTML, CSS, Javascript) 0x Demo App
https://github.com/0xProject/0x-starter-project - A project showcasing the 0x v4 protocol through a collection of runnable examples.

How to Use Swap API - This guide will teach you how to programmatically execute a ERC20 token trade.
Build a Token Swap Dapp With Next.js, 0x, ConnectKit - A video walk-through covering core developer concepts important when building any token swapping dapp.
How to Build a Token Swap dApp with 0x API - Written and video content on how to build a token swapping dapp (a simple Matcha.xyz) using the Swap API. This dApp aggregates liquidity across the greater DEX ecosystem surfaces the best price to the user.
Use 0x API Liquidity in Your Smart Contracts - This guide will teach you how to consume 0x API swap quotes from inside a smart contract.
Working in the Testnet - Learn two ways to test swapping ERC20 tokens with the 0x API - either using the Goerli testnet or forking Ethereum mainnet into your own testnet. Includes a runnable example.