I cannot figure out how to get it to show up in the share menu and how to extract the share details like text/link/picture/etc.
This needs to be done in the manifest so it is not possible with native tasker. You can use the plug in 'auto share' to get a tasker task or app factory app in the share menu.
I have AutoShare and now there are AutoShare, AutoShare Command, and AutoShare Intercept options in the share dialog. How do I get a Tasker task or app factor app in the share menu?
Sometimes you might have to use the "AutoShare Command" generic icon one time in that app, and then subsequent times the direct command/share option will appear.
I think Android 7.0+ is required for this.