# MarketplaceInstalledAddOnExtension ## Operations - [Retrieve a list of Extensions for the Installed Add-on](https://twilio.demo.bump-doc.com/doc/marketplace/operation/operation-listinstalledaddonextension.md) - [Fetch an instance of an Extension for the Installed Add-on](https://twilio.demo.bump-doc.com/doc/marketplace/operation/operation-fetchinstalledaddonextension.md) - [Update an Extension for an Add-on installation](https://twilio.demo.bump-doc.com/doc/marketplace/operation/operation-updateinstalledaddonextension.md) [Powered by Bump.sh](https://bump.sh)