crawldiff 0.1.4

git log for any website. Track what changed on any site with AI-powered summaries.

crawldiff

git log for any website.

Track what changed on any website. Git-style diffs with optional AI summaries.
Powered by Cloudflare's /crawl endpoint.

---

pip install crawldiff

# Snapshot a site
crawldiff crawl https://stripe.com/pricing

# Come back later. See what changed.
crawldiff diff https://stripe.com/pricing --since 7d

What is this

A CLI tool for tracking website changes over time. It crawls pages via Cloudflare's /crawl endpoint, stores markdown snapshots locally in SQLite, and produces unified diffs between crawls. Optionally summarizes changes with AI.

No SaaS subscriptions. No proprietary dashboards. Just crawldiff diff.

Setup (30 seconds)

You need a free Cloudflare account. That's it.

# Install
pip install crawldiff

# Set your Cloudflare credentials (free tier: 5 jobs/day, 100 pages/job)
export CLOUDFLARE_ACCOUNT_ID="your-account-id"
export CLOUDFLARE_API_TOKEN="your-api-token"

# Or save to config (env vars take precedence over config file)
crawldiff config set cloudflare.account_id your-id
crawldiff config set cloudflare.api_token your-token

Usage

Track changes on any website

# Take a snapshot
crawldiff crawl https://competitor.com

# Later, see what changed
crawldiff diff https://competitor.com --since 7d

# Output as JSON (pipe to jq, Slack, wherever)
crawldiff diff https://competitor.com --since 7d --format json

# Save a markdown report
crawldiff diff https://competitor.com --since 30d --output report.md

Watch a site continuously

# Check every hour, get notified when something changes
crawldiff watch https://stripe.com/pricing --every 1h

# Check every 6 hours, skip AI summary
crawldiff watch https://competitor.com --every 6h --no-summary

View history

crawldiff history https://stripe.com/pricing

       Crawl History — https://stripe.com/pricing
┏━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━┓
┃ Job ID         ┃ Date                ┃ Pages ┃
┡━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━┩
│ cf-job-abc-123 │ 2026-03-13 09:00:00 │    12 │
│ cf-job-def-456 │ 2026-03-06 09:00:00 │    11 │
│ cf-job-ghi-789 │ 2026-02-27 09:00:00 │    11 │
└────────────────┴─────────────────────┴───────┘

More options

# Deeper crawl
crawldiff crawl https://docs.react.dev --depth 3 --max-pages 100

# Static sites (faster, no browser rendering)
crawldiff crawl https://blog.example.com --no-render

# Ignore whitespace noise in diffs
crawldiff diff https://example.com --since 7d --ignore-whitespace

AI Summaries (optional)

crawldiff can optionally summarize diffs using an LLM. Three providers are supported:

# Cloudflare Workers AI (free, uses your existing CF account)
crawldiff config set ai.provider cloudflare

# Anthropic Claude
pip install crawldiff[ai]
crawldiff config set ai.provider anthropic
export ANTHROPIC_API_KEY="sk-..."

# OpenAI
pip install crawldiff[ai]
crawldiff config set ai.provider openai
export OPENAI_API_KEY="sk-..."

Don't want AI? Just use --no-summary. Diffs work fine without it.

How it works

1. crawldiff crawl <url>
   └─→ Cloudflare /crawl API (headless browser, respects robots.txt)
   └─→ Store Markdown snapshots in local SQLite (~/.crawldiff/)

2. crawldiff diff <url> --since 7d
   └─→ Cloudflare /crawl with modifiedSince (only fetches changed pages)
   └─→ Diff against stored snapshot (unified diff via difflib)
   └─→ AI summary (optional)
   └─→ Syntax-highlighted diffs in the terminal (via rich)

Cloudflare's modifiedSince parameter means repeat diffs only fetch changed pages, not the entire site.

Comparison

	crawldiff	Visualping	changedetection.io	Firecrawl
Open source	Yes	No	Yes	Yes
CLI-native	Yes	No	API	API
AI summaries	Built-in	No	Via plugins	Extraction
Incremental crawling	Yes (modifiedSince)	No	No	No
Local-first storage	SQLite	Cloud	Self-host or cloud	Cloud
JSON/pipe output	Yes	No	Yes	Yes
Free tier	5 jobs/day, 100 pages	Limited	Yes (self-host)	500 credits

All commands

crawldiff crawl <url>      Snapshot a website
crawldiff diff <url>       Show what changed (the main command)
crawldiff watch <url>      Monitor continuously
crawldiff history <url>    View past snapshots
crawldiff config set|get|show   Manage settings

Contributing

Pull requests and bug reports are welcome. See CONTRIBUTING.md to get started.

License

MIT