Mearman 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