# 0x

rotki decodes 0x protocol swaps (including those routed through Matcha) across Ethereum, Arbitrum, Optimism, Base, Polygon, BNB Chain, and Monad. Processing is local; your addresses and trades stay on your computer.

## Features

- 0x protocol swaps decoded as clean trade events.
- Matcha swaps decoded as standard 0x swap events (Matcha is built on 0x).
- Multi-chain - Ethereum, Arbitrum, Optimism, Base, Polygon, BNB Chain, and Monad.

## Setup

1. In rotki, add your address under the chain where you've used 0x or Matcha.
2. Open History → wait for the initial sync to complete. 0x swap events appear once your transactions are decoded.

## FAQ

### Do my 0x trades leave my machine?

No. rotki reads activity from the RPC nodes you configure directly from your computer.