Microsoft Teams Integrate Files tab with Custom App tab

Question

I have developed integration of Custom Tabs App (as an external web service) into Microsoft Teams: Docs

I need to implement possibility to open files from Files tab of Channel/Group chat in this Custom Tab app. Also it should be great also to have ability to open files in Custom Tabs App directly from attachments menu:

Thanks in advance for any response.

Answer 1

Currently You cannot add an ability that will provide an option to deep -link for the file to custom tab of your app. This is by design.