> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.0x.org/changelog/2026/4/30/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.0x.org/_mcp/server.

#### New Liquidity Sources

* **Arbitrum:** Added Fluid, Printr, and Renegade.
* **Avalanche:** Added Printr.
* **Base:** Added Aerodrome V3, Fluid, LunarBase, Nabla, Printr, a Clanker V2 fork (Uniswap V4), Doppler Rehype (Uniswap V4), and Uniswap Stable Hook (Uniswap V4).
* **BSC:** Added Fluid, SmoothyV1, and Printr.
* **Ethereum:** Added Fluid, Printr, and Renegade darkpool.
* **Mantle:** Added Printr.
* **Optimism:** Added Velodrome V3 and Uniswap V2.
* **Polygon:** Added Fluid.
* **Tempo:** Added Uniswap V2, V3, and V4 support.

#### New Feature

* **0x Agent Skill**: New agent skill that gives AI coding agents full knowledge of the 0x APIs with a single command. Once installed, agents knows every endpoint, authentication method, and integration pattern for token swaps. [Learn more](https://docs.0x.org/docs/introduction/develop-with-ai/agent-skills)
* **`slippagePpm` in Swap and Gasless API**: Sub-BPS slippage precision is now supported via a new `slippagePpm` parameter (0–1,000,000). This is mutually exclusive with `slippageBps` — existing defaults and validations are unchanged. See more in [API Reference](https://docs.0x.org/api-reference/evm-ap-is/swap/allowanceholder-getprice).

#### Bug Fixes

* Improve gas accuracy for Abstract.
* Improve accuracy with Aave V3.

> 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.