Changelog

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New Liquidity Sources

  • Arbitrum: Added MimSwap.
  • Avalanche: Added Pharaoh DLMM.
  • Base: Added AlienBase V2/V3, BaseX, DackieSwap V2, Equalizer, HydrexLegacy, IziSwap, KimV4, NineMMV2/V3, OmniV3, RocketSwap, SharkSwap V2, SoSwap, Synthswap V2/V3, Treble, TrebleV2/V4, and enabled UniswapV4 hooked pools.
  • BSC: Added BiSwap V3, Ellipsis, MDEX, Nerve, and PancakeSwap Stable.
  • Ethereum: Added Blackhole, Fraxswap V2, Rubicon, ShibaSwap, SkyLite PSM, Stepn, USDD Lite PSM, and enabled UniswapV4 hooked pools.
  • Linea: Added Aqua V2, EchoDEX V3, Etherex, IziSwap, Lynex, Nile, Nile V2, PancakeSwap V3, Secta V2/V3, SpartaDex, SushiSwap V3, SyncSwap Classic/Stable, and Uniswap V3.
  • Polygon: Added Meshswap and PUSD.
  • Scroll: Added Aqua V2, SyncSwap Classic/Stable, and Wombat.

New Features

  • Exact-out support in Swap API: You can now specify a precise buyAmount to receive and the API returns the minimum sell amount required. Responses include maxSellAmount, estimatedNetSellAmount, and a route.refund leg that converts any buy-token surplus back to the sell token. Supports custom recipient and txOrigin parameters. See buyAmount in API reference.
  • Concurrent gasless trades now supported: Gasless /submit now allows multiple in-flight trades for the same taker and sell token, as long as the taker’s balance covers all pending sells.

New Liquidity Sources

  • Arbitrum: Added Fluid, Printr, and Renegade.
  • Avalanche: Added Printr.
  • Base: Added Aerodrome V3, Fluid, LunarBase, Nabla, Printr, a Clanker V2 fork (Uniswap V4), Doppler Rehype (Uniswap V4), and Uniswap Stable Hook (Uniswap V4).
  • BSC: Added Fluid, SmoothyV1, and Printr.
  • Ethereum: Added Fluid, Printr, and Renegade darkpool.
  • Mantle: Added Printr.
  • Optimism: Added Velodrome V3 and Uniswap V2.
  • Polygon: Added Fluid.
  • Tempo: Added Uniswap V2, V3, and V4 support.

New Feature

  • 0x Agent Skill: New agent skill that gives AI coding agents full knowledge of the 0x APIs with a single command. Once installed, agents knows every endpoint, authentication method, and integration pattern for token swaps. Learn more
  • slippagePpm in Swap and Gasless API: Sub-BPS slippage precision is now supported via a new slippagePpm parameter (0–1,000,000). This is mutually exclusive with slippageBps — existing defaults and validations are unchanged. See more in API Reference.

Bug Fixes

  • Improve gas accuracy for Abstract.
  • Improve accuracy with Aave V3.

📣 Announcements

New Chains

  • Tron: Now supported in Cross-Chain API.

New Liquidity Sources

  • Arbitrum: Added Metric, CamelotV3, PancakeV3, UniV3.
  • Avalanche: Added Metric.
  • Base: Added Doppler (Uniswap V4), Feltir, Stabull, Wasabi, Liquid V2 hooks (Uniswap V4), Aquinas hook (Uniswap V4), cbBTC pool, Zora hook (Uniswap V4).
  • BSC: Added Elfomo, Lista Stable, Metric, Pancake Infinity CL.
  • Ethereum: Added Clober V2, DeFiSwap, DodoV2, Metric, Wasabi.
  • HyperEVM: Added Hybra V4, Nabla, UltraSolid V3.
  • Monad: Added BalancerV3.
  • Optimism: Added DackieSwap V3, Rubicon, Velodrome V2.
  • Sonic: Added Equalizer, Metro LB, Metro.

New Features

  • Smart account signatures in Gasless API: Raw signatures from ERC-4337 smart wallets are now accepted in the Gasless API.
  • wrapUnwrapMode in Swap API: Controls how native wrap/unwrap trades are executed — direct (default) calls the wrapped-native contract directly, settler routes through Settler or AllowanceHolder for compatibility. See more

📣 Announcements

New Chains

  • HyperEVM: Now supported in Swap API.
  • Tempo: Now supported in Swap API.

New Liquidity Sources

  • Arbitrum: Added WooFi v2.
  • Avalanche: Added WooFi v2.
  • Base: Added DODO v2, ElfomoFi, Metric, and WooFi v2.
  • BSC: Added WooFi v2.
  • Ethereum: Added Ekubo v3.
  • Linea: Added WooFi v2.
  • Mantle: Added WooFi v2.
  • Optimism: Added WooFi v2.
  • Polygon: Added ApeSwap, WooFi v2.
  • Sonic: Added WooFi v2.
  • HyperEVM: Added Hybra, Kittenswap.

Chores

  • Expanded Uniswap v4 support:
    • Added Temple hook (Base).
    • Added Clanker hook (BSC).
    • Added Pancake Infinity.
    • Added Liquid Launch.

📣 Announcements

  • Cross-Chain API (Early Access): Learn more about the Cross-Chain API and request early access via the signup form.
  • xStock Support: xStock assets are now supported. To enable xStocks, email william@0xproject.com with the subject line “xStocks Opt-in”, and we’ll follow up with next steps.

New Chains

  • Abstract: Now supported in Swap API.

New Liquidity Sources

  • Avalanche: Added Pharaoh v3.
  • Base: Added Clober, Handji, Hydrex, Omni v3.
  • BSC: Added Pancake Infinity Bin.

New Features

  • xStock Support: Added support for xStock assets. Opt-in details are listed in the announcements above.

Chores

  • Expanded Uniswap v4 support:
    • Added Zora hook.
    • Added third-party Creator Coin hook.
    • Added Universal hook.
    • Added Stock hook.
  • Bebop Action Migration: Adopted the new Bebop action, improving execution handling by determining fill data internally.

New Liquidity Sources

  • Arbitrum: Added Spark PSM.
  • Base: Added Hydrex (legacy).
  • Monad: Added LFJ TokenMill.
  • Improved Nabla integration.
  • Improved Fluid integration.

Chores

  • Expanded Uniswap v4 support:
    • Added additional NFT Strategy hooks.
    • Added Corner hook.
    • Added additional Flaunch hooks.