Stay updated on 0x API changes and new features — subscribe to the changelog.

📣 Announcements

  • Reminder: API v1 will be sunset on April 11, 2025. To avoid service disruptions, migrate to v2 before this date. For more information, see the Migration Guide.

New Chains

  • Monad Testnet (10143): Added support for Swap API.

New Liquidity Sources

  • Arbitrum: Added Fluid and swapr.
  • Base: Added DeltaSwap, Kim V4, Rocket Swap, and SharkSwap.
  • Ethereum: Added Sushiswap v3.
  • Linea: Added Overnight.

Chores

  • Entry Point Contract Update: The entry point contract address now supports the Uniswap v4 contract. Developers are strongly advised not to hardcode this address. Instead, use the value returned by transaction.to (see API reference).
  • Avalanche Uppdated the Cancun hardfork: This means that the AllowanceHolder address on Avalanche is now 0x0000000000001fF3684f28c67538d4D072C22734 (see 0x Settler changelog).