# PreviewMarketplaceInstalledAddOnExtension ## Operations - [Fetch an instance of an Extension for the Installed Add-on.](https://twilio.demo.bump-doc.com/doc/preview/operation/operation-fetchmarketplaceinstalledaddonextension.md) - [Update an Extension for an Add-on installation.](https://twilio.demo.bump-doc.com/doc/preview/operation/operation-updatemarketplaceinstalledaddonextension.md) - [Retrieve a list of Extensions for the Installed Add-on.](https://twilio.demo.bump-doc.com/doc/preview/operation/operation-listmarketplaceinstalledaddonextension.md) [Powered by Bump.sh](https://bump.sh)