The jump to version 4.0 of the 0x protocol was a landmark event, introducing architecture. Versions that follow (such as 8.x libraries) generally interact with this new architecture.
This recent release (Nov 2025) fixed a critical bug where the default value for starknetVersion needed to be explicitly set. It is primarily used for creating and operating Starknet accounts for agent workflows.
Never download zipped 0x code from third-party websites or unverified mirrors. Only use the official @0x scoped packages on npm or the verified 0xProject organization on GitHub.
When downloading the 0x suite (distributed via packages like @0x/api or @0x/mesh ), developers unlock access to aggregated liquidity from hundreds of unique AMMs and exchanges. Version 8.9.1 brings minor optimizations, updated peer dependencies, and critical security patches intended to keep custom dApps fully aligned with the evolving Ethereum Virtual Machine (EVM) ecosystem. Core Components of 0x Version 8.9.1
If you are integrating 0x into a Node.js project, the safest way to download the latest packages is through official package managers like npm or Yarn.
was a documented release that added Uniswap V3 router support on the Base network. It is highly probable that
Identify the for a specific crypto tool you need. Check if a specific website or link is a known scam. Set up basic security for your digital assets.
Cryptocurrency infrastructure requires strict verification to protect against man-in-the-middle attacks. After downloading the release assets or source code, verify the cryptographic hash against the official release notes provided by the 0x core team.
: If you have cryptocurrency, move your funds to a new wallet created on a clean device with a new seed phrase.
For developers who wish to audit the source code, run local tests, or contribute to the monorepo, clone the repository directly from GitHub: