ChangeGist with Zapier and your own tools
Every change ChangeGist spots comes with a one-line, plain-English summary. Send those summaries wherever you work: a Google Sheet that logs every competitor price move, a Trello card for each new tender, a message in your CRM. Or add pages to watch from another tool.
With Zapier (no code)
- Make an API key on your Account page (Connections → Zapier & API).
- Add ChangeGist to your Zapier account and paste the key when it asks.
- Pick a trigger or action:
- New change (trigger): runs each time one of your pages changes in a way that matters. You get the headline, the details, the kind of change (price down, price up, new, removed, wording), the page and a link.
- Watch a page (action): starts watching a page, for example every new product a supplier lists, or every competitor in a spreadsheet.
The API
Simple JSON over HTTPS. Send your key in a header on every request (never in the address):
Authorization: Bearer cg_your_key_here| Request | What it does |
|---|---|
GET /api/v1/me | Checks the key works; returns your email and plan. |
GET /api/v1/changes?limit=25 | Your latest important changes, newest first (up to 100).
Add &page_id=… for one page. |
GET /api/v1/pages | The pages you're watching. |
POST /api/v1/pages | Start watching a page. JSON body: url, and optionally
name, check_every_minutes, alert_rule. |
Example change:
{
"id": 1042,
"detected_at": "2026-11-05T09:14:02Z",
"headline": "Lavender Dream candle down from £28 to £24",
"details": ["Lavender Dream candle: £24 (was £28)"],
"kind": "price_down",
"link": "https://changegist.com/monitors/17#change-1042",
"page": {"id": 17, "name": "GlowCo shop", "url": "https://glowco.example/shop"}
}Good to know
- Up to 120 requests a minute per key. Errors come back as
{"error": "…"}with a normal HTTP status. - Pages added through the API follow the same rules as the dashboard: your plan's page limit and check frequency, safe public pages only, and each site's robots.txt.
- We only store a scrambled copy of your key. If you lose it, make a new one: the old one stops working at once.
- Included in every plan and the free trial.