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

# nonce

> A unique 32-character string that defines the embed login URL.

<Note>
  This parameter is **required** to create valid embed requests.
</Note>

This must be unique or the session will fail to load.

In the **Embed URL Builder**, this is the **Nonce** field.

<Tip>
  If using the SDK or `/embed/sso/generate-url` endpoint, `nonce` will be automatically added to the generated URLs if one is not provided.
</Tip>

## Syntax

```markdown theme={null}
nonce=<32_character_string>
```

## Properties

<ParamField path="nonce" type="string" required>
  A unique 32-character alphanumeric string.
</ParamField>

## Examples

```markdown title="Example nonce" theme={null}
nonce=abcdefghijklmnopqrstuvwxyz123456
```