> ## Documentation Index
> Fetch the complete documentation index at: https://wundergraphinc-milinda-eng-9918-router-cache-tag-based-inva.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Compatibility Version

> The `compatibility-version` commands relate to a router's compatibility version.

Please see [Router Compatibility Versions](/concepts/router-compatibility-versions) for an overview on the topic.