What does the payload look like?

Every change-detected event sends a POST with this JSON body shape: { "event": "competitor_change", "timestamp": "2026-05-13T17:29:45.812Z", "competitor": { "id": "68a1c4d2f3...", "name": "Stripe", "domain": "stripe.com" }, "change": { "id": "6a04f7232751f380...", "type": "pricing", "importance": 9, "page": { "title": "Pricing", "path": "/pricing", "url": "https://stripe.com/pricing" }, "summary": "Standard plan rate increased from 2.9% + 30c to 3.0% + 30c.", "detected_at": "2026-05-13T17:29:45.812Z", "view_url": "https://www.spyglow.com/changes/6a04f7232751f380..." } } The top-level "event" field is always "competitor_change" for change detections. Slack-format payloads and Microsoft Teams-format payloads have different shapes; this is the generic format used when you point a webhook at your own endpoint.

Do you retry on failure?

No. Each change is sent once, and a failed delivery is not retried. Every change also stays in your SpyGlow feed.

Can I have multiple webhooks?

Yes. Add as many endpoints as you need, each with its own URL and format. A common pattern is one endpoint for a team chat and another for a data warehouse.

Which changes are sent?

Changes from the competitors you turned webhooks on for, at or above that competitor's importance threshold and never below 5 out of 10. Every endpoint receives the same changes.

How many events should I expect?

It depends on how many competitors and pages you monitor and how often they change. Only important changes from the competitors you choose are sent, which keeps volume low for most accounts.

Does this work on the Free plan?

No, webhooks are included on Pro, Growth and Teams. Free users get in-app alerts and can turn on email alerts for each competitor.

Pipe competitor signals into your own stack

Webhook alerts to any endpoint.

Send important competitor changes to your own endpoint as they are detected. Pipe SpyGlow into your data warehouse, your CRM, a Discord server, Microsoft Teams or anything else that accepts an HTTP request.

Generic JSON, or Slack, Discord or Microsoft Teams compatible messages
As many endpoints as you need, each with its own format
Turn webhooks on for the competitors you choose
Sample payload published below

The intelligence layer

A polling job tells you wakes up every hour and asks "anything new?". SpyGlow gives you a POST as soon as a change is classified, no polling required.

What you get