Report which fiscal years are bundled, their GSA source files, and which tools call the GSA API.

ZIP, state, and M&IE lookups for bundled fiscal years are answered from GSA's published files with no network call. City requests with a supplied county for a bundled year also need no key or network call. City-name requests without a county, and unbundled years, use the live GSA Per Diem API. Credential presence is reported without revealing or validating any value.