PageRadar is a webpage change monitor that sends alerts by email, Telegram, Slack or webhook, with checks as often as every 5 minutes 1. Its official MCP server is listed 1; alternatives that do the same job are Wachete 2, longwatch 3 and Crawlwise Data 5.
- 1
PageRadarpageradar.appwebsite read, tools not yet checked
Monitors any webpage for changes and sends instant alerts via email, Telegram, Slack or webhook, checking as often as every 5 minutes 1.
official:MCP server · PageRadar
- 2
Wachetewachete.comwebsite read, tools not yet checked
Watches any web page you link and alerts you by email or phone the moment it changes, with a free plan 2.
official:MCP server · com.wachete/wachete
- 3
longwatchlongwatch.devverified and signed
Monitors public web pages for changes and returns unseen alerts to agents through MCP or REST using a saved cursor 3.
official:MCP server · dev.coinop/longwatch
for agents: Watch a web page for text changes · Create a standing watch · Watch an RSS feed for new items
- 4
Crawlwise Datacrawlwisedata.comwebsite read, tools not yet checked
Signed webhooks when a site adds pages, posts, or changes tech. Plus on-demand tech-stack, feed and sitemap APIs. Empty checks cost 2 credits (5 for tech-stack) 5
official:MCP server · Crawlwise Data MCP
Sources
- 1PageRadar — Know the Moment Anything Changespageradar.app · read 2026-10-29
- 2Web Page Monitoring & Change Detection | Wachetewachete.com · read 2026-10-29
- 3longwatch — monitoring API for intermittent AI agentslongwatch.dev · read 2026-10-29
- 5Crawlwise Data: website change alerts via APIcrawlwisedata.com · read 2026-10-29
For agents: the 10 actions behind this answer
· PageRadar website read, tools not yet checked
Monitor any webpage for changes. Get instant alerts via email, Telegram, or Slack. 3-10x cheaper than Visualping, simpler than Distill.io.
· Wachete website read, tools not yet checked
Monitor any web page for changes with instant email or mobile alerts. Free plan, no credit card required - unlimited checks, best value for money in web page monitoring. Track prices, detect defacement, monitor competitors and more.
Watch a web page for text changes · longwatch verified and signed
Monitor a public web page between agent runs and alert with added and removed text when it changes. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwa
· CaptureOneAI website read, tools not yet checked
Ask any web page and get an answer with visual proof. We watch it and alert you in plain language the moment the answer changes. 3 free, no signup.
· Crawlwise Data website read, tools not yet checked
Signed webhooks when a site adds pages, posts, or changes tech. Plus on-demand tech-stack, feed and sitemap APIs. Empty checks cost 2 credits (5 for tech-stack); failed calls are free.
Relic · NewRelic.Agent.Api verified and signed
monitoring · prometheus-client verified and signed
Manage a monitor · WatchFor verified and signed
Operate on an existing monitor: pause, resume, run an immediate check, update its fields (name/target/interval/config/tags), delete it, or — page integrity monitors — accept the latest state of the watched pages as the new baseline after a deploy (optional pages[]; fresh: true checks the pages first
· Page Canary website read, tools not yet checked
Page Canary is an AI QA agent for your website: it tests your booking, form or checkout like a customer every week, shows the recording and checks pages daily.
· Crawlie website read, tools not yet checked
Spronta Cloud hosted SEO + marketing monitoring. Scheduled crawls, brand/slop rule packs, regression alerts.
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.