Watch anything. Hear only what matters.
A monitor checks a page, a whole site, or a live API on your schedule — diffs every run, filters the noise with AI, and delivers a signed alert the moment something real changes.
change detected
Source
HTTP/2
Validation
100% match
Country
United States
Stock change — Product #A123
Jul 10, 2026 · 10:45:32 AM
check #8829-X
latency 24 ms
Original
Out of stock
New
In stock
Three scopes
Point it at a page, a site, or an entire API.
One page, watched your way.
Diff the whole rendered page — as Markdown, HTML, or cleaned HTML — or define a JSON schema and track only the fields you care about.
- Whole-page content diffs, line by line
- Or schema-extracted fields: a price, a status, a headline
- Rendered in a real browser when the page needs JavaScript
{ "url": "…/product/123", "watchMode": "specific_data", "intervalMinutes": 60 }fastest interval
checks as often as every 15 minutes
pages per site run
whole-site crawls, set-diffed
alert channels
signed webhooks and email
servers to run
no cron, no infrastructure
Every check, tuned
The knobs are there when you need them.
On your schedule
Checks run every 15 minutes to weekly — you pick the interval. Give a monitor an end date and it retires itself when the job is done.
From any country
Route checks through the country you choose, so you see regional prices, inventory, and geo-gated content exactly as locals do.
Real browser rendering
JavaScript-heavy pages render in a stealth browser before diffing. Static pages stay on fast, cheap HTTP — you choose per monitor.
Behind logins
Attach a saved browser session to watch account pages and gated content. If the session expires, we pause the monitor and flag it for re-auth.
Only your fields
Define a JSON schema and every check extracts and compares just those fields. Redesigns, ads, and rotating banners can't wake you up.
AI with a goal
Write the rule in plain English — “only when the price drops” — and an LLM reads every diff, applies it, and writes a summary of what actually changed.
From change to alert
Detected, judged, delivered.
Every check ends the same way: silence when nothing moved, and a verifiable, summarized alert when something did.
Detect
Content hashes, extracted fields, page sets, or JSON paths — diffed against the last snapshot. Every run is kept, so you can compare any two later.
Judge
With AI mode on, an LLM reads the diff against your goal. Cosmetic churn is suppressed; real changes get a plain-language summary.
Deliver
A signed POST to your webhook and an email to your team — retried automatically, every attempt logged. Verify the HMAC and trust the payload.
POST /hooks/anakin HTTP/1.1
X-Anakin-Signature: sha256=ab12…9f4e
X-Anakin-Timestamp: 1783012204
X-Anakin-Delivery-Id: dl_7f3k2m
{
"type": "monitor.change",
"url": "https://example.com/product/123",
"watchMode": "specific_data",
"changedFields": ["price"],
"summary": "Price dropped from $19.99 to $14.99",
"diff": {
"price": { "before": 19.99, "after": 14.99 }
}
}What people watch
If it changes on the web, it's worth a monitor.
Prices & stock
Track price and availability fields on product pages. Alert the instant a competitor cuts prices or an item comes back in stock.
page · specific_data
Competitor moves
Watch a rival's whole site. New landing pages, pulled features, edited pricing — you hear about it on the next crawl.
site · daily
Policies & terms
Monitor terms of service, privacy policies, and compliance pages. AI summarizes exactly which clause moved.
page · full_page + AI
Listings & jobs
Crawl careers pages and marketplaces on a schedule. Added and removed listings show up as clean set-diffs.
site · patterns
Search-rank drift
Run a Wire search action every few hours and watch just the rank paths. Know the moment you slip off position one.
wire · watch paths
Your own site
Point a site monitor at production. Pages that vanish or change after a deploy trigger an alert before your users notice.
site · post-deploy
Quick start
Watching in one call.
One POST creates the monitor — page, site, or wire. We handle the schedule, the diffing, the AI, and the alerts. Flip through the tabs to see all three scopes.
import requests
API_KEY = "your_api_key"
# Watch one page — alert only when the price actually drops
monitor = requests.post(
"https://api.anakin.io/v1/monitors",
headers={"X-API-Key": API_KEY},
json={
"url": "https://example.com/product/123",
"intervalMinutes": 60,
"watchMode": "specific_data",
"outputSchema": {
"type": "object",
"properties": {
"price": {"type": "number"},
"inStock": {"type": "boolean"},
},
"required": ["price"],
},
"aiMode": True,
"aiGoal": "only when the price drops or it goes out of stock",
"alertWebhookUrl": "https://your-app.com/hooks/anakin",
"alertEmails": "you@company.com",
},
).json()
print("Monitoring", monitor["id"])
# Keep this secret — verify X-Anakin-Signature with it:
print("Webhook secret:", monitor["alertWebhookSecret"])X-API-Key header.Get API keyFAQ
Frequently asked questions
The web won't tell you.
We will.
Set a monitor on a page, a site, or an API. The next meaningful change lands in your webhook — signed, summarized, on time.