> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.0x.org/changelog/2026/2/28/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.0x.org/_mcp/server.

#### 📣 Announcements

* **Cross-Chain API (Private Beta)**: The Cross-Chain API is now live in private beta. [Learn more and sign up](https://0x.org/products/cross-chain).

#### New Chains

* **HyperEVM:** Now supported in Swap API.
* **Tempo:** Now supported in Swap API.

#### New Liquidity Sources

* **Arbitrum:** Added WooFi v2.
* **Avalanche:** Added WooFi v2.
* **Base:** Added DODO v2, ElfomoFi, Metric, and WooFi v2.
* **BSC:** Added WooFi v2.
* **Ethereum:** Added Ekubo v3.
* **Linea:** Added WooFi v2.
* **Mantle:** Added WooFi v2.
* **Optimism:** Added WooFi v2.
* **Polygon:** Added ApeSwap, WooFi v2.
* **Sonic:** Added WooFi v2.
* **HyperEVM:** Added Hybra, Kittenswap.

#### Chores

* Expanded Uniswap v4 support:
  * Added Temple hook (Base).
  * Added Clanker hook (BSC).
  * Added Pancake Infinity.
  * Added Liquid Launch.

> Developer documentation for the 0x API. Embed swaps in your onchain app. Access 10+ million tokens with liquidity from 150+ exchanges with a single API.