diffgrab

[](https://pypi.org/project/diffgrab/) [](https://pypi.org/project/diffgrab/) [](https://github.com/QuartzUnit/diffgrab/blob/main/LICENSE)

> Web page change tracking with structured diffs. markgrab + snapgrab integration, MCP native.

from diffgrab import DiffTracker

tracker = DiffTracker()
await tracker.track("https://example.com")
changes = await tracker.check()
for c in changes:
    if c.changed:
        print(c.summary)     # "3 lines added, 1 lines removed in sections: Introduction."
        print(c.unified_diff) # Standard unified diff output
await tracker.close()

• Change detection — track any URL, detect content changes via content hashing
• Structured diffs — unified diff + section-level analysis (which headings changed)
• Human-readable summaries — "5 lines added, 2 removed in sections: Intro, Methods"
• Snapshot history — SQLite storage, browse past versions of any page
• markgrab powered — HTML/YouTube/PDF/DOCX extraction via markgrab
• Visual diff — optional screenshot comparison via snapgrab
• MCP server — 5 tools for Claude Code / MCP clients
• CLI included — diffgrab track, check, diff, history, untrack

pip install diffgrab

Optional extras:

pip install 'diffgrab[cli]'      # CLI with click + rich
pip install 'diffgrab[visual]'   # Visual diff with snapgrab
pip install 'diffgrab[mcp]'      # MCP server with fastmcp
pip install 'diffgrab[all]'      # Everything

import asyncio
from diffgrab import DiffTracker

async def main():
    tracker = DiffTracker()

    # Track a URL (takes initial snapshot)
    await tracker.track("https://example.com"