> ## 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 configuration options

> Where to find the op-reth CLI reference, and how op-reth pairs with op-node.

op-reth's flag reference lives in one place: the
[op-reth CLI reference](/node-operators/op-reth/cli/overview), imported into these docs
from the op-reth source tree and versioned with it. Start there for the
command taxonomy and configuration model, or jump straight to the
[`op-reth node` flag listing](/node-operators/op-reth/cli/op-reth/node) for the full
`--help` output of the command node operators run.

This page previously carried a hand-maintained copy of the op-reth flag
catalog, pinned to an old release; it has been retired in favor of the single
imported surface above so the flag facts cannot drift between two pages.

<Info>
  **op-reth is the recommended execution client for new OP Stack deployments.** op-node's `--l2.enginekind` flag defaults to `reth`, so no extra engine-kind configuration is needed when pairing the two; set it explicitly only when running a different execution client (`geth` or `erigon`). See the [op-node configuration options](/node-operators/reference/op-node-config) page for the engine-side flags.
</Info>

## Related references

* [op-reth JSON-RPC reference](/node-operators/reference/op-reth-json-rpc)
* [op-reth historical proofs configuration](/node-operators/reference/op-reth-historical-proof-config)
* [Building an archive node / pruning op-reth](/node-operators/guides/management/archive-node)
* Upstream cross-reference: [Reth CLI documentation](https://reth.rs/cli/reth.html)