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Version: 2.0

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Subscribe to the changelog to stay up to date on recent changes to 0x APIs, as well as preview upcoming features.

2024-11-27​

🚀 New Features​

  • Trade Analytics API is now live and available to all integrators.
  • Introduced the /getChains endpoint for Swap and Gasless APIs, allowing you to retrieve the supported chains for each API.

⛓️ New Chains​

  • Mantle support is now live both Swap and Gasless APIs.

Note: Interested to build on Mantle? Reach out via our contact form!

🌊 New Liquidity Sources​

  • BSC: Added Baby Doge Swap, Nomiswap stable, Orion v2, and PancakeSwap stable.
  • Ethereum: Added Fluid, Ring v2.
  • Polygon: Added Meshswap, Polycat, Stepn, and Synapse.

2024-10-31​

🚀 New Features​

  • Trade Analytics API is now available in limited access. Contact us for early access inquiries.
  • Multi-user Access for the 0x Dashboard is now live, allowing multiple users to manage account analytics and insights.
  • Detailed API Error Codes are now displayed in the 0x Dashboard Analytics to streamline error troubleshooting.
  • Sell Entire Balance option is now supported in Swap API v2. To enable, set sellEntireBalance to true. Supported for both allowance-holder and permit2 endpoints. Learn more about implenting this feature.

🌊 New Liquidity Sources​

  • Arbitrum: Added Angle.
  • Base: Added Angle and Clober V2.
  • BSC: Added Maverick V2.
  • Ethereum: Added Angle, DeFi Swap, Sky Migration (SKY, USDS), and Stepn.
  • Linea: Added SyncSwap V2.
  • Mantle: Added Cleopatra V1, Dodo V2, and Stratum Exchange.
  • Mode: Added Balancer V2, iZiSwap, Kim V2, Kim V4, Morphex, SwapMode V2, SwapMode V3, Supswap V2, and Supswap V3.
  • Scroll: Added Uni V3 and Wombat.

Note: Want to add your liquidity source? Please fill out this request form.

⛓️ New Chains​

  • Mantle (Beta) is now live.
  • Gasless API support added for BSC, Avalanche, Mantle, and Mode chains.

Note: Interested to build on Mantle or with Gasless API? Reach out via our contact form!

🧹 Chores​

  • Latency Optimization: Shipped a technical rewrite reducing /price endpoint response times—p95 latency dropped from ~1s to ~500ms, and p50 latency decreased from ~550ms to ~340ms—with no impact on pricing performance.

🐛 Bug Fixes​

  • MNT and POL Compliance: Improved support for MNT and POL tokens, which do not fully adhere to the ERC20 standard.
  • Slippage Handling: Slippage now correctly caps at the maximum specified basis points (bps).
  • Meta-transaction Settler: Fixed an RFQ handling issue in the meta-transaction flow.

📝 Documentation​

  • New guide for integrating Smart Contract Wallets and Multi-Sig Wallets with the Permit2 Swap API.
  • New guide on best practices for swapping native tokens (e.g., ETH).

2024-10-01​

🚀 New Features​

  • 0x API v2 is now live! Follow our migration guide to upgrade your app from v1 to v2.
  • Gasless API support is now available on Blast and Scroll.
  • Swap API support is also live on Blast, Linea, and Scroll.
  • New slippageBps parameter for the Gasless API: This parameter allows you to define the maximum acceptable slippage for buyToken, in basis points (Bps). Learn more in the Gasless API documentation.
  • TypeScript SDK: Our new TypeScript SDK streamlines integration with the 0x v2 Swap and Gasless APIs. It offers full type safety and easy integration with Node.js, Next.js, and React Query.
  • Trade Analytics API: Coming soon! Stay tuned for more information about how this API will provide key trading metrics and insights for better decision-making.

Note: Interested to integrate Trade Analytics API when it's live? Contact us out via our form!

⛓️ New Chains​

  • Mantle support is coming soon!

Note: Interested in building on Mantle? Contact us via form!

2024-08-28​

🚀 New Features​

  • Buy/Sell Tax Support: Added support for Fee-on-Transfer tokens, which are subject to buy/sell taxes. Previously, users needed to adjust slippage tolerance manually to account for these taxes, often leading to errors. With the new fee-on-transfer accounting, slippage tolerance adjustments are no longer necessary. Additionally, the buy and sell tax are now returned, allowing users to utilize this information as needed.
  • Smart Contract Wallet Support: Added support for Smart Contract Wallets in Swap API v2’s Permit2 flow.
  • Gas Optimization: Implemented gas optimizations for Solidly V3 integration.
  • Routing Improvements: Significantly improved routing for amphrETH and sDOLA.

🌊 New Liquidity Sources​

  • Arbitrum: Enabled RFQ on Arbitrum in Swap API v2.
  • Base: Added SoSwap and Kinetix as new liquidity sources on Base. Also enabled RFQ on Base in Swap API v2.
  • Ethereum: Added support for sDAI coverage.
  • Optimism Integration: Added WOOFi as a new liquidity source on Optimism.

Note: Want to add your liquidity source? Please fill out this request form.

⛓️ New Chains​

  • Preparation for Linea and Scroll support.

Note: Interested to build on Scroll and/or Linea? Reach out via our contact form!