I want to allow instructors to use the same resource-specific URLs, as we have been doing for LTI 1.0, with LTI 1.3. So that instructors would not need to change their course info in an institution moves from LTI 1.0/1.1 to LTI 1.3. Our tool would detect which version of LTI is being used, and behave accordingly.
The resource-specific URLS look something like https://the_tool_domain.com/view/{resource code}
However, it appears that Moodle requires any tool URLs to be registered at the admin level (as a redirect URI for the external tool) before a course can use the link. Is there a way around this?
If I didn't want to care about backward compatibility, I would put the resource info in a custom parameter, and have one shared redirect URI, but I would like to minimize the work for instructors.
For what it's worth, this doesn't seem to be a restriction with the IMS reference platform.