Wayback Machine
Referencearchive.org
The Internet Archive's Wayback Machine: look up whether any URL has been archived, list every capture of a page or of a whole site with timestamps, MIME types and HTTP status codes, see how often a page was archived year by year, and search archived hosts by name.
The crw MCP on your computer calls Wayback Machine directly. Calls cost no credits and the data does not pass through fastCRW. Install it once for Claude Code, Cursor, Codex, Windsurf, Gemini CLI or OpenCode, with your fastCRW API key in place of the placeholder:
Capabilities (7)
waybackmachine/calendar-capturesFree, runs locallyReturns every capture of a URL inside one year or one month as compact rows of [timestamp fragment, HTTP status code, collection index], with the crawl collection names those indexes point into in a parallel array.
waybackmachine/capture-calendarFree, runs locallyReturns the Wayback calendar sparkline for a URL: for each year an array of twelve monthly capture counts, plus the first and last capture timestamps and a per-month digest of the HTTP status classes seen.
waybackmachine/capturesFree, runs locallyReturns the Wayback CDX index rows for one exact URL - every capture with its timestamp, the original URL as crawled, MIME type, HTTP status code, content digest and byte length - as a JSON array whose first row is the column names.
waybackmachine/path-urlsFree, runs locallyReturns one CDX row per distinct URL archived under a given URL prefix on a single host, with the first capture's timestamp, MIME type, status code, digest and length.
waybackmachine/site-searchFree, runs locallyReturns archived hosts matching a free-text query, each with its display name, the first and last year it was captured and counts of captured webpages, images, video and audio.
waybackmachine/site-urlsFree, runs locallyReturns one CDX row per distinct URL archived anywhere on a host and its subdomains, with the first capture's timestamp, MIME type, status code, digest and length.
waybackmachine/snapshotFree, runs locallyReturns whether a URL has been archived and, if so, the single closest capture to the requested moment: its playback URL, 14-digit timestamp and the HTTP status that was recorded at crawl time.
Licence
Access to the Archive’s Collections is provided at no cost to you and is granted for scholarship and research purposes only.
https://archive.org/about/terms.phpAttribution
Display this wherever you show the data. It arrives on every response as provenance.attributionText.
Source: Wayback Machine, Internet Archive (archive.org). Archived content remains the property of its original publishers. Not affiliated with, sponsored or endorsed by the Internet Archive.