The 0x protocol is distributed as several NPM packages. To download the JavaScript/TypeScript libraries for v8.9.1:
: Released in late 2025, this version included essential bug fixes for default Starknet versions 0x Version 8.9.1 Download-
| Feature | 0x v7 | 0x v8.9.1 | | :--- | :--- | :--- | | | Hardcoded | Dynamic via AssetProxyRegistry | | Order Validation | validateOrder method | validateOrderWithContext method | | Liquidity Pools | No native support | Native LP integration | | Transaction Calldata | Larger | Optimized via calldata compression | The 0x protocol is distributed as several NPM packages
The safest way to download 0x Version 8.9.1 is through the official 0x Project GitHub repository. Avoid third-party mirrors or "free download" sites, as these often contain malicious code or "man-in-the-middle" vulnerabilities. Verify Checksums Verify Checksums While searching for " 0x Version 8
While searching for " 0x Version 8.9.1 Download ," I found that this specific term often appears in documents related to cryptocurrency scripts
Relayers aggregate off-chain orders and submit them on-chain. 0x v8.9.1 is battle-tested for high-throughput order books.