For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
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Changelog

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October 31, 2025
October 31, 2025
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November 25, 2025

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September 29, 2025

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New Features

  • Max Trade Surplus BPS: Added a new maxSurplusBps parameter for controlling max acceptable surplus on returned trades.
  • Dashboard SSO Login: Added support for Single Sign-On (SSO) in the 0x Dashboard.

New Chains

  • Sonic: Added Swap API support.
  • Unichain, Sonic, and Plasma: Added Gasless API support.

New Liquidity Sources

  • Arbitrum: Added Swaap.
  • Avalanche: Added Swaap, Blackhole.
  • Base: Added Rubicon, 9mm.
  • BSC: Added Swaap, Thena v2, Pancake Infinity.
  • Berachain: Added Nabla.
  • Ethereum: Added Rubicon.
  • Linea: Added Swaap.
  • Mode: Added Swaap.
  • Monad: Added Magma, Kuru, Crystal, Nitro.
  • Optimism: Added Swaap, Rubicon.
  • Plasma: Added Lithos.
  • Polygon: Added Swaap.
Uniswap v4 Hooks
  • Added support for the following hooks:
    • NFT Strategy
    • Deli
    • Doppler
    • vii finance
    • pubhouse
    • DCA
    • Clanker

Chores

  • Improved routing for CREATE∗∗and∗∗CREATE** and **CREATE∗∗and∗∗NOICE ecosystems.
  • Improved validation on Base.