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Enable limit orders in your app or take liquidity directly from the 0x Orderbook.

0x API has an Orderbook on the following chains:

  • Ethereum
  • BSCs
  • Polygon

In previous versions of 0x API prior to 0x Protocol v4, this functionality was exposed by the "SRA" endpoint. Previous docs: Note that 0x Protocol is an open-sourced project that is separate and not maintained by 0x.

Get Started


To create an account, and get your live API keys to access the Orderbook API, visit the 0x Dashboard.

This section contains the following docs and guides

API References

Code Examples

0x Starter Project includes with a number of scenarios using the 0x v4 protocol that can be run from the command-line: