Use when the user asks to "add a dependency", "vet a license", "check if this package is safe to use", "can we use this library", "add this to go.mod/package.json", or is preparing a proprietary/closed-source product that bundles open-source code. Guides license-compatibility review before a dependency is pulled in, distinguishing copyleft obligations (GPL/AGPL/LGPL) from permissive ones (MIT/Apache-2.0/BSD) and flagging when legal review is required.
