Wayback Machine availability check. Returns whether a URL has been archived and the closest snapshot to a given timestamp. Use to verify if a page existed at a specific point in time.

Wayback Machine archive history for a URL. Returns a chronological list of archived snapshots (one per day) with direct archive URLs. Use to track how a webpage changed over time.

Wayback Machine archive summary for a URL. Returns first archived date, last archived date, and direct links to oldest and newest snapshots. Quick overview of a URL's archive history.