# payload

## Purpose
`reth-optimism-payload-builder` crate: builds Optimism payloads and validates OP execution payloads.

## Contents (one hop)
### Subdirectories
- [x] `src/` - Payload builder implementation, types, and validators.

### Files
- `Cargo.toml` - Manifest for OP payload builder dependencies.
  - **Key items**: deps `reth-payload-builder`, `reth-optimism-evm`, `reth-optimism-txpool`