> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.0x.org/changelog/2026/4/13/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

* **Tron:** Now supported in Cross-Chain API.

#### New Liquidity Sources

* **Arbitrum:** Added Metric, CamelotV3, PancakeV3, UniV3.
* **Avalanche:** Added Metric.
* **Base:** Added Doppler (Uniswap V4), Feltir, Stabull, Wasabi, Liquid V2 hooks (Uniswap V4), Aquinas hook (Uniswap V4), cbBTC pool, Zora hook (Uniswap V4).
* **BSC:** Added Elfomo, Lista Stable, Metric, Pancake Infinity CL.
* **Ethereum:** Added Clober V2, DeFiSwap, DodoV2, Metric, Wasabi.
* **HyperEVM:** Added Hybra V4, Nabla, UltraSolid V3.
* **Monad:** Added BalancerV3.
* **Optimism:** Added DackieSwap V3, Rubicon, Velodrome V2.
* **Sonic:** Added Equalizer, Metro LB, Metro.

#### New Features

* **Smart account signatures in Gasless API:** Raw signatures from ERC-4337 smart wallets are now accepted in the Gasless API.
* **`wrapUnwrapMode` in Swap API:** Controls how native wrap/unwrap trades are executed — `direct` (default) calls the wrapped-native contract directly, `settler` routes through Settler or AllowanceHolder for compatibility. [See more](https://docs.0x.org/api-reference/evm-ap-is/swap/allowanceholder-getprice#request.query.wrapUnwrapMode)

> 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.