> For the complete documentation index, see [llms.txt](https://docs.usemeta.fi/js-sdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.usemeta.fi/js-sdk/constants/chain.md).

# Chain

## Description

The chain object defines chains in a format supported by the Metafi SDK.

## Supported Chains

Currently, we support the following chains:

**Mainnets**

* Ethereum Mainnet : `Chains.ETH`
* Polygon Matic Mainnet : `Chains.MATIC`

**Testnets**

* Görli (Goerli testnet) : `Chains.Goerli`
* Mumbai testnet :  : `Chains.MUMBAI`

We are working on supporting more chains - feel free to reach out via Discord if you require support for a different chain.