> For the complete documentation index, see [llms.txt](https://ston-fi.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ston-fi.gitbook.io/docs/developer-section/omniston/sdk/evm.md).

# EVM chain

Use this section when your Omniston SDK integration includes EVM-side settlement.

## In this section

* [EVM wallet kinds](/docs/developer-section/omniston/sdk/evm/evm-wallet-kind.md) explains the wallet categories Omniston cares about and why they affect integration behavior.
* [EVM allowance methods](/docs/developer-section/omniston/sdk/evm/evm-allowance.md) helps you choose between `EIP-2612`, `Permit2`, and native ERC-20 approval, and shows which payload fields to send.
* [EVM signature shapes](/docs/developer-section/omniston/sdk/evm/evm-signature.md) explains which signature format Omniston expects for permits and final order signing.