In order for your developers to access Inspect, they must be to each prototype. There is currently no way to access Inspect from public share links.
Note: In non-Enterprise plans, adding a collaborator to a prototype allows them to delete elements like hotspots and screens. These changes cannot be undone and the deleted elements cannot be recovered. We suggest creating a copy of the prototype to use for Inspect viewing if sharing with someone whom you don't trust.
Enterprise accounts should s role to to restrict their access to Inspect mode and comment mode only. You should also make sure that "Can preview and join all company projects" is disabled in the , which prevents Reviewers from accessing prototypes that they are not invited to.