Read the full free answer for a route ID returned by find_evidence_questions or find_package_advisories. Optional version is an exact explicit-list check for advisory records only; ranges are unresolved and a missing version never means safe. Includes public evidence, review dates, source URLs, exclusions and snapshot hash. Unknown routes are refused. This does not save a paid delivery, run a new test or verify current deployment applicability. No key or payment is needed.