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

# IURLMetadata

> Protobuf interface IURLMetadata generated from WAProto.

Defined in: [WAProto/index.d.ts:9278](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L9278)

## Properties

### fbExperimentId?

> `optional` **fbExperimentId**: `null` | `number`

Defined in: [WAProto/index.d.ts:9279](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L9279)