Event reference

Website change events

The webhook event for competitor website changes: every key, the shape of each change and a sample body.

A website event fires when a tracked page changes in a way the judge keeps. One page change is one event. The event lists every change on the page in changes.

eventType: website
subEventType: website_change
signalType: website.changed for a changed page. website.page_added and website.page_removed exist in the schema but are never sent
Platform field: websiteResponse (same value as metadata)
Tracker: Website pages
relevance: Judged: { "status": "relevant", … }

How to read this page

Every website body has the common fields plus one websiteResponse object, sent twice (also as metadata). It has the item fields and two keys of its own. There is no platform key.

Fields

websiteResponse

title

string|null

The page title.

text

string|null

The first 2,000 characters of the page's Markdown after the change. The whole page is not sent.

url

string|null

The page URL. Same as pageUrl.

author

object|null

null for pages.

media

object[]

{ type: 'image' | 'video' | 'document', url: string }. Usually empty.

metrics

object|null

null for pages.

pageUrl

string

The page that changed.

changes

object[]

What changed, one entry per change. See below.

Each entry of changes has this shape:

changes[] · one change

type

'minor'|'major'

How big the judge rated the change.

title

string

A short name for the change (Breeze AI Credits Added).

description

string

One or two sentences on what changed.

previous

string

The excerpt that changed, before the change, as Markdown. A short snippet, not the whole page. When the section is new it reads like … was not present in the previous version.

current

string

The same excerpt after the change, as Markdown.

categories

string[]

Labels for the change (feature_update, product_launch). Free-form, treat as open.

Event · website_change (HubSpot)Sample with the exact shape (no real run yet)

json

1{
2  "version": 1,
3  "eventId": "df38433d-cc67-4467-ba3a-8892f7a50702",
4  "eventType": "website",
5  "subEventType": "website_change",
6  "action": "updated",
7  "signalType": "website.changed",
8  "source": "website",
9  "orgId": "org_3KikADUjsyXrUJ4RJhWpwcp98Yf",
10  "trackerId": "440b3b16-2000-484a-aa8b-7481d482f1dd",
11  "projectId": "2738158a-08fd-4fc4-912d-43d4c328bc10",
12  "runId": "8ba8ccfa-e9e5-4764-9feb-4b0e88a2ba4a",
13  "competitor": {
14    "name": "HubSpot",
15    "domain": "hubspot.com",
16    "subjectKey": "https://www.hubspot.com/pricing"
17  },
18  "occurredAt": "2026-10-27T15:08:27.064Z",
19  "detectedAt": "2026-10-27T15:08:27.064Z",
20  "sequence": 5,
21  "itemKey": "website-https://www.hubspot.com/pricing",
22  "relevance": {
23    "status": "relevant",
24    "confidence": 1,
25    "reasoning": "HubSpot added HubSpot Credits for Breeze AI agents to its Professional plan. No price changes were detected.",
26    "summary": "HubSpot added HubSpot Credits for Breeze AI agents to its Professional plan. No price changes were detected.",
27    "shortSummary": "Breeze AI Credits Added",
28    "categories": [
29      "feature_update",
30      "pricing_strategy"
31    ]
32  },
33  "websiteResponse": {
34    "title": "HubSpot Pricing",
35    "text": "Title: HubSpot Pricing\n\nURL Source: https://www.hubspot.com/pricing\n\nMarkdown Content:\n# Choose your plan\n\n## Professional\n\nEverything in Starter, plus marketing automation, custom reporting, omni-channel campaigns and HubSpot Credits for Breeze AI agents. …",
36    "url": "https://www.hubspot.com/pricing",
37    "author": null,
38    "media": [],
39    "metrics": null,
40    "pageUrl": "https://www.hubspot.com/pricing",
41    "changes": [
42      {
43        "type": "major",
44        "title": "Breeze AI Credits Added",
45        "description": "Added HubSpot Credits for Breeze AI agents to the Professional plan feature list.",
46        "previous": "# Choose your plan\n\n## Professional\n\nEverything in Starter, plus marketing automation, custom reporting and omni-channel campaigns. …",
47        "current": "# Choose your plan\n\n## Professional\n\nEverything in Starter, plus marketing automation, custom reporting, omni-channel campaigns and HubSpot Credits for Breeze AI agents. …",
48        "categories": [
49          "feature_update",
50          "pricing_strategy"
51        ]
52      }
53    ]
54  },
55  "metadata": {
56    "title": "HubSpot Pricing",
57    "text": "Title: HubSpot Pricing\n\nURL Source: https://www.hubspot.com/pricing\n\nMarkdown Content:\n# Choose your plan\n\n## Professional\n\nEverything in Starter, plus marketing automation, custom reporting, omni-channel campaigns and HubSpot Credits for Breeze AI agents. …",
58    "url": "https://www.hubspot.com/pricing",
59    "author": null,
60    "media": [],
61    "metrics": null,
62    "pageUrl": "https://www.hubspot.com/pricing",
63    "changes": [
64      {
65        "type": "major",
66        "title": "Breeze AI Credits Added",
67        "description": "Added HubSpot Credits for Breeze AI agents to the Professional plan feature list.",
68        "previous": "# Choose your plan\n\n## Professional\n\nEverything in Starter, plus marketing automation, custom reporting and omni-channel campaigns. …",
69        "current": "# Choose your plan\n\n## Professional\n\nEverything in Starter, plus marketing automation, custom reporting, omni-channel campaigns and HubSpot Credits for Breeze AI agents. …",
70        "categories": [
71          "feature_update",
72          "pricing_strategy"
73        ]
74      }
75    ]
76  }
77}

Long text values are shortened here with “ …”. Your endpoint gets the full text.

A website change in the Signals feed — The same kind of event in the app. The title and description come from changes[].

Website tracker

Pick the pages to watch.

New competitors

New competitor events.