Analyze Wayback Machine Capture Frequency

Analyze the capture frequency and rate for a URL over a specified time range.

Usage

npx tsx scripts/frequency.ts <url> [from] [to] [options]

Arguments

Argument	Required	Description
url	Yes	The URL to analyze
from	No	Start date (YYYYMMDD or YYYY-MM). Default: oldest capture
to	No	End date (YYYYMMDD or YYYY-MM). Default: newest capture

Options

Option	Description
--full	Include detailed breakdown by year
--json	Output as JSON
--no-cache	Bypass cache and fetch fresh data from API

Output

Default (compact):

1423 captures over 3652 days
Average: 0.39/day, 11.87/month, 142.3/year

With --full:

📊 CAPTURE FREQUENCY ANALYSIS

URL: https://example.com
Range: 2015-01-01 12:00 to 2025-01-01 08:00 (3652 days)

Total captures: 1423
Average rate:
  0.39 captures per day
  11.87 captures per month
  142.3 captures per year

By year:
  2015: 156 captures
  2016: 203 captures
  2017: 189 captures
  ...

Script Execution

npx tsx scripts/frequency.ts <url> [from] [to] [options]

Run from the wayback plugin directory: ~/.claude/plugins/cache/wayback/

Examples

# Analyze entire archive history
npx tsx scripts/frequency.ts https://example.com

# Analyze specific date range
npx tsx scripts/frequency.ts https://example.com 2020 2023

# Full breakdown with year-by-year stats
npx tsx scripts/frequency.ts https://example.com 2020 2023 --full

# Specific dates
npx tsx scripts/frequency.ts https://example.com 20200101 20231231

Caching

CDX API responses are cached for 1 hour. Use --no-cache to bypass.

Related Skills

• wayback-range - Show oldest and newest captures with archive span
• wayback-list - List all snapshots with pagination
• wayback-oldest - Find the earliest capture
• wayback-newest - Find the most recent capture