wayback-range

Query the CDX API for the oldest and newest Wayback snapshots of a URL.

3|Updated Jan 17, 2026

Search Tags:#data-analysis #archive #wayback #web-archive #cdx-api #time-span #url-history

Ready to run

npx skills add https://github.com/Mearman/marketplace --skill wayback-range

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: wayback-range
Source: https://github.com/Mearman/marketplace/tree/main/plugins/wayback/skills/wayback-range
Command: npx skills add https://github.com/Mearman/marketplace --skill wayback-range

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

Quickly determine the full archival history of a URL by retrieving the oldest and newest captures from the Wayback Machine.

Core Features & Use Cases

Retrieve oldest and newest captures to reveal the total archive time span for a URL.
Output formats include compact, full URL lists, and JSON for automation.
Use cases include archival research, compliance monitoring, and historical trend analysis of web content.

Quick Start

Run the oldest-newest.ts script with a target URL to fetch the archive range.

Frequently Asked Questions about wayback-range

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I find the oldest and newest Wayback Machine snapshots for a URL?▼

This archival range retrieval works by querying the CDX API to fetch and format the first and last capture dates, providing a complete timeline view for any valid URL.

What is the best way to determine the full archive timespan of a web address?▼

Determining the full archive timespan of a web address involves querying the CDX API to retrieve the oldest and newest Wayback Machine captures, allowing you to monitor the complete archival coverage history of that URL.

Can I get JSON output for Wayback Machine archive history to use in automation?▼

Yes, you can get JSON output for Wayback Machine archive history by using the optional --json flag, which formats the oldest and newest CDX API capture data for direct integration into automated archival research pipelines.

Does the CDX API support retrieving a compact list of first and last captures?▼

Yes, the CDX API supports retrieving a compact list of first and last captures, offering multiple output formats including full URL lists and JSON to analyze the total Wayback archive time span efficiently.

How do I monitor the archival coverage history of a web URL for compliance?▼

To monitor the archival coverage history of a web URL for compliance, you retrieve the oldest and newest Wayback snapshots via the CDX API, establishing a quantifiable time span of historical web content preservation.