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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
  • BSC
  • 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.


All teams with a valid API key are able to GET /orderbook, if you are interested to POST /orderbook please contact 0x via the Intercom Messenger in the bottom-right of your 0x Dashboard, we will review your request promptly.

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This section contains the following docs and guides

API References