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

# lookupUser

> Look up a user recipient by phone number or email.

Look up a user recipient by phone number or email.
Returns a single user or throws an error if not found.

```graphql theme={null}
query {
  lookupUser(
    input: UserLookupInput!
  ): UserLookupResult!
}
```

## Arguments

<ParamField body="input" type="UserLookupInput!" required>
  *No description provided in the schema yet.*
</ParamField>

## Returns

[`UserLookupResult!`](/api-reference/types/user-lookup-result) — Represents a user recipient.