Internet Archive API
Internet Archive (archive.org) has 2 public methods: get archived page and list archived snapshots of a page. Each costs 1 credit per completed run (1¢ with pay as you go); failed runs are free.
Unofficial. Not affiliated with or endorsed by Internet Archive.
Methods
2Finds the closest Wayback Machine capture of a web page to a past date and returns its title and readable text.
Returns capture time, days from requested date, snapshot URL, page title, main text
Readweb.archive.org/get_archived_pageLists Wayback Machine captures of a web page, oldest first, with HTTP status and whether the content changed since the previous capture.
Returns total_snapshots, snapshots with datetime, link, HTTP status, content_changed, digest
Readweb.archive.org/list_snapshots