> ## Documentation Index
> Fetch the complete documentation index at: https://docs.optimism.io/llms.txt
> Use this file to discover all available pages before exploring further.

# op-reth

***

## description: op-reth is the OP Stack execution client built on reth.

`op-reth` is the [OP Stack](https://docs.optimism.io/) execution client built on [reth](https://github.com/paradigmxyz/reth). It provides a high-performance execution layer for Optimism and all OP Stack chains.

## Features

* **Full OP Stack support** — Deposit transactions, L2-specific fee handling, and all OP Stack protocol changes.
* **Superchain Registry** — Built-in support for all chains in the [superchain registry](https://github.com/ethereum-optimism/superchain-registry). Use `--chain unichain`, `--chain base`, etc.
* **High performance** — Built on reth's modular architecture with parallelized execution and efficient storage.

## Getting started

* [Running op-reth on OP Stack chains](/rust/op-reth/run/opstack) — Install and run op-reth with a rollup node.
* [Sync OP Mainnet](/rust/op-reth/run/faq/sync-op-mainnet) — Import Bedrock state and sync OP Mainnet from scratch.
* [CLI Reference](/rust/op-reth/cli/op-reth) — Full command-line reference for op-reth.