> ## Documentation Index
> Fetch the complete documentation index at: https://docs.buckspay.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Type Alias: SwapChain

# Type Alias: SwapChain

> **SwapChain** = `"avalanche"` | `"celo"` | `"polygon"` | `"base"` | `"avalanche-fuji"` | `"polygon-amoy"` | `"base-sepolia"` | `"celo-sepolia"`

Defined in: [packages/core/src/types.ts:247](https://github.com/bucks-pay/buckspay-sdk/blob/43ad599d2776cb5d657043c36847b3318093ccf4/packages/core/src/types.ts#L247)

EVM chains the facilitator's existing /swap/\* rail supports. Mirrors
facilitator/src/schema.ts `swapChainSchema`. STRETCH-only.