This is 'pydoctor', an API documentation generator that works by static analysis. It was written primarily to replace epydoc for the purposes of the Twisted project as epydoc has difficulties with zope.interface. If it happens to work for your code too, that's a nice bonus at this stage :) pydoctor puts a fair bit of effort into resolving imports and computing inheritance hierarchies and, as it aims at documenting Twisted, knows about zope.interface's declaration API and can present information about which classes implement which interface, and vice versa.
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.