AI-powered change monitoring with structured diffs, significance filtering, and instant alerts. Built for AI agents and humans.
Free tier: 10 monitors, daily checks. No credit card required.
example.com • 2 minutes ago
Price
$49.00
New Price
$39.00
AI Summary
Price dropped by 20% ($10). This is a significant change that likely indicates a sale or promotion.
REST API, MCP server, or webhook alerts. You choose.
mcp.json
{
"mcpServers": {
"quietdiff": {
"command": "npx",
"args": ["-y", "@quietdiff/mcp"]
}
}
}curl
curl https://quietdiff.com/api/v1/monitors \
-H "X-API-Key: qd_..." \
-d '{
"url": "https://example.com",
"fields": [
{"name": "price", "selector": ".price"}
]
}'Built for developers, designed for AI agents
Only get alerted for changes that actually matter. AI analyzes every diff and suppresses noise like timestamps and cookie banners.
REST API with OpenAPI spec, signed webhooks, and MCP server. Built for AI agents to monitor the web for you.
Changes are re-checked N times to confirm they're real. Never get alerted for a single bad fetch or A/B test.
Headless browser rendering with stabilization. Works on modern web apps, not just static HTML.
Get alerted when selectors break or sites go down. Every check is logged so you never miss silent failures.
Email, HMAC-signed webhooks, or Slack. Readable old→new diffs with AI summaries, not screenshot spam.
Built for developers who need precision, not noise
| Feature | QuietDiff | Visualping | Distill | ChangeTower |
|---|---|---|---|---|
| AI Significance Filtering | ||||
| Structured Field Diffs | ||||
| Confirmation Re-checks | ||||
| REST API + OpenAPI | ||||
| MCP Server for AI Agents | ||||
| Monitor Health Alerts |
Start free, upgrade when you need more
For professionals
For teams
Every detected change is analyzed by an LLM to determine if it's significant. Trivial changes like timestamps, cookie banners, or minor formatting tweaks are suppressed. Only meaningful changes like price drops, stock changes, or content updates trigger alerts.
Model Context Protocol lets AI agents like Claude Desktop monitor websites for you. Install our MCP server and your AI assistant can create monitors, check for changes, and report back in natural language.
Yes! All alerts can be sent to your webhook endpoint with HMAC-SHA256 signatures for verification. You also get email alerts and optional Slack notifications.
Yes. Cancel anytime via the Stripe Customer Portal. No questions asked. Free tier stays free forever.
Sign up for a free account, create your first monitor with the URL and fields to track, then we'll check it daily and alert you to meaningful changes. Upgrade anytime for faster checks.