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Version: 2.0

Upgrading to 0x API v2

Upgrade Guides​

Upgrade your project to take advantage of the latest v2 functionality:

Why migrate to v2?​

Upgrading to API v2 ensures your integration stays competitive and unlocks significant benefits:

  1. Access New Features
    API v2 introduces cutting-edge enhancements, including advanced quote validation, buy/sell tax support, Permit2 support, additional monetization controls, and more. With continuous reinvestment in v2, staying on v1 means missing out on new features and benefits.

  2. Achieve Better Pricing
    Get the most competitive prices using our next-generation pricing engine with multi-hop and multi-plex routing.

  3. Expand to New Chains
    Access 5+ additional chains and new liquidity sources, broadening your reach across the ecosystem.

Read about our announcement here.

How do I migrate to v2?​

Migrating to 0x v2 is easy! Follow our migration guides for Swap v2 and Gasless v2.

API v1 Lifecycle Stages​

This table outlines the key phases in the API v1 lifecycle, detailing the support levels, activities, and timelines for each stage. As API v1 transitions towards deprecation and eventual sunset, it is crucial for teams to plan their migration to API v2 to ensure uninterrupted access to the latest features, better pricing, and expanded chain support.

Stage Support Level Activities v1 Dates
Active Development Full support, including new feature development Feature development, bug fixes, and updates Q1 2024
Maintenance Mode Partial support; no new feature development Critical bug fixes and security updates Q1 2024 - Q3 2024
Deprecated (Current Stage) Gradual phase-out with an end-of-support timeline; migration to v2 is recommended No updates; minimal support; users are encouraged to migrate Dec 13, 2024 - April 11, 2025
Sunset (End of Life) No support; API v1 will be turned off API v1 fully retired; endpoints will no longer be accessible April 11, 2025

What's happening with v1?​

We will sunset 0x API v1 on April 11, 2025.

Following the sunset date, you must have upgraded to v2 to continue using our endpoints. In the meantime, no updates will be made, nor will support be provided to API v1.

Please migrate to API v2 to keep your product running smoothly.

What does “sunset” mean?​

We will fully retire API v1 on April 11, 2025. Integrators will no longer be able to use v1 endpoints.

Sunsetting API v1 will enable us to focus on expanding and upgrading v2 🚀

If you have any questions or concerns, please reach out or click the chat bubble for help.