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

# useCheckReferralCode

> Hook to verify whether a given referral code exists.

Check if referral code exists.

* [Tech docs](/sdks/tech-doc/modules/orderly_network_hooks#usecheckreferralcode)

```ts theme={null}
const { isExist, error, isLoading } = useCheckReferralCode("ref-code");
```