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

# Reorg handling

Mobula will handle reorgs and will send a message to the client with `data.reorg` and the block\_number. Example of a reorg message:

```json theme={null}
{
  "data": {
    "reorg": 345678765
  },
  "webhookUrl": "https://webhook.site/9fe9833f-6eda-4307-bb36-c5d6f86df96c",
  "chainId": "evm:1",
  "streamId": "639dbfc1-f241-4f9c-ada6-a2c45d810b2b"
}
```

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