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CompanyFacts Company Changes API
x402
CompanyFacts Company Changes API is a paid API for AI agents from companyfacts.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).
Returns a time-windowed changelog of events detected for a company — job openings/closings, technology stack changes, and contact/address updates — sourced from live ATS boards and web crawls.
Price / call$0.01
Success—
StatusUnknown
How this service works
Open job postings read first-hand from the applicant-tracking system behind a company's careers page: Greenhouse, Ashby, Lever or Workable. Includes a directory of 8532 company job boards, because none of the vendors publishes one. Salaries are parsed into numbers where the employer publishes them and refused where ambiguous. No personal data.
Output
A JSON object with a count of events, a list of timestamped change events (each with item type, kind of change, before/after values, and source URL), the subject company identifiers, per-part tracking metadata (tech, hiring, contacts), and a flag indicating whether more events are available beyond the returned window.
Example use cases
Competitor hiring surge alert
“Check what's changed at stripe.com over the last 30 days — specifically any new job postings or department-level hiring activity I should know about.”
Sales prospect tech stack monitoring
“What technology changes has hubspot.com had since October 1, 2026? I want to know if they've added or dropped any tools so I can update my prospect notes.”
Contact data freshness check
“Has the address or contact info for acmecorp.com changed in the past 60 days? Pull the contacts part of their changelog since September 1, 2026.”
Technical details
Endpoint
GEThttps://companyfacts.dev/x402/v1/company-changes?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a structured, time-windowed audit trail of what has changed at a specific company — including job openings sourced directly from ATS platforms (Greenhouse, Ashby, Lever, Workable), technology stack shifts, and contact/address updates — rather than a static snapshot. Prefer it over generic job board scraping when you need event-level change history with before/after values and source attribution, or when you need to monitor multiple company signals (hiring + tech + contacts) in a single call.
Side effects
- Unknown domain — company not in the 8532-company directory returns empty or null subject
- Date range too broad — no events found for the specified window returns count 0 and empty events array
- Invalid query parameters — unrecognized 'parts' filter value may return error or ignored filter
- Company not yet tracked — newly added domains may have no baseline history, returning empty changelog
- Rate or payment failure — x402 payment not processed results in 402 response with no data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 3,
"notes": [
"Changes come only from our own records."
],
"since": "2026-11-01",
"until": "2026-11-30",
"events": [
{
"day": "2026-11-30",
"item": "address",
"kind": "changed",
"part": "contacts",
"after": "250 Oak Ave, Austin, TX 78704, US",
"before": "100 Main St, Austin, TX 78701, US",
"source_url": "https://example-dental.com/contact"
},
{
"day": "2026-11-30",
"item": "technology",
"kind": "added",
"part": "tech",
"after": "HubSpot",
"before": "",
"source_url": "https://example-dental.com/"
},
{
"day": "2026-11-12",
"job": {
"board": "exampledental",
"title": "Dental Hygienist",
"job_id": "123",
"location": "Austin, TX",
"department": "Clinical"
},
"item": "job",
"kind": "opened",
"part": "hiring",
"after": "",
"before": "",
"detail": null,
"source_url": "https://boards.greenhouse.io/exampledental/jobs/123"
}
],
"subject": {
"domain": "example-dental.com",
"company": null,
"register": null
},
"tracking": {
"tech": {
"baseline": false,
"read_now": true,
"last_read": "2026-11-30T09:00:00.000Z",
"next_read": "2026-12-30",
"tracked_since": "2026-10-31",
"changes_found_now": 1
},
"hiring": {
"boards": [
"exampledental"
],
"tracked": true,
"latest_day": "2026-11-30",
"history_starts": "2026-10-31"
},
"contacts": {
"baseline": false,
"read_now": true,
"last_read": "2026-11-30T09:00:00.000Z",
"next_read": "2026-12-30",
"tracked_since": "2026-10-31",
"changes_found_now": 1
}
},
"more_available": false
}
}Tags
x402
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