> For the complete documentation index, see [llms.txt](https://docs.megaeth.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.megaeth.com/mega-evme/configuration.md).

# Configuration

- [Chain and Spec](https://docs.megaeth.com/mega-evme/configuration/chain-and-spec.md): Select which MegaETH spec version and chain ID to use.
- [Block Environment](https://docs.megaeth.com/mega-evme/configuration/block-environment.md): Configure block number, timestamp, coinbase, base fee, and other block-level fields.
- [State Management](https://docs.megaeth.com/mega-evme/configuration/state-management.md): Load prestate, override balances and storage, fork from RPC, and dump post-execution state.
- [SALT Buckets](https://docs.megaeth.com/mega-evme/configuration/salt-buckets.md): Control SALT bucket capacities to test dynamic storage gas pricing.


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