My project would like to integrate with 0x. How can I contact the 0x team?
We appreciate your interest in building with our APIs. To get an API key and start building for free, please create an account on the 0x Dashboard. You may also check out our enterprise options and contact our team for more custom needs. Our team will review and respond to you.
What is an app?
An app is a self-contained unit for each individual application that you’re building. Each app can have its own unique API keys and configurations.
What blockchains does 0x support?
Swap API is available on multiple blockchains, including:
Ethereum (Mainnet and Sepolia)
Arbitrum
Avalanche
Celo
Binance Smart Chain
Fantom
Optimism
Polygon (Mainnet and Mumbai).
Gasless API is currently available on:
Ethereum
Arbitrum
Optimism
Base
Polygon.
What are the eligible tokens?
0x will levy fees on a limited set of tokens that are subject to change. Moreover, the fee may be forfeited on other trade conditions. The fee, when applied, will be returned in each API response.
How can I monitor my API usage?
You can monitor the API usage for your apps on the 0x Dashboard.
Is there a fee to use Swap API?
The Swap API has a powerful free plan that you can access by creating an account via the 0x Dashboard. However, we also offer custom plans with higher throughput to support you as your user base and transactions grow. You can review and select the perfect plan for your team's needs on our pricing page.
0x also takes an on-chain fee of 0.15% on swaps involving a select few token pairs for the Standard plan. This fee is charged on-chain to the users of your app during the transaction. If you are on the Custom Plan, we provide volume based discounts.
In cases where we charge a fee, we'll return the value of the fee in the API response in the zeroExFee parameter. You can find more details about this in the Swap API reference.
Can I use 0x API for price data only?
Unfortunately, we deprecated our Price API and thus cannot get prices alone.
Can I use 0x's Orderbook API?
Unfortunately, Orderbook API is no longer supported by 0x.
Does the 0x Dashboard support having multiple user accounts for our team?
For now, we only support one user per team account, but we will add support for multiple users in the coming weeks.
I have a staking or 0x protocol / 0x governance question. Can you assist?
Our developer support team processes 0x API related requests. For protocol questions, we recommend reaching out in the #governance channel on the 0x Discord.