Uptrue + Signed Webhooks — Wire Alerts Into Anything

How it works

When an incident opens or resolves, Uptrue POSTs a JSON payload to the webhook URL you configure. The body is signed with HMAC-SHA256 using a per-channel secret — your endpoint should verify the X-Uptrue-Signature header before trusting the payload.

The payload includes the incident metadata (id, title, status, severity, started_at, resolved_at) and the monitor metadata (id, name, type, target). Both incident-opened and incident-resolved events are sent to the same webhook URL with different event values, so a single endpoint can handle the full lifecycle.

Setup in 4 steps

1. 1In Uptrue, open Dashboard → Alerts → New Channel, pick "Webhook" as the type.
2. 2Paste your endpoint URL. Optionally provide a webhook secret — if set, every POST is signed with X-Uptrue-Signature: sha256=<hex>.
3. 3Save the channel. The first test request fires immediately — verify your endpoint receives it and that signature verification passes.
4. 4Attach the channel to one or more monitors. Both incident-opened and incident-resolved events are POSTed to the same URL.

What you get

• JSON POST with full incident and monitor metadata
• HMAC-SHA256 signature in X-Uptrue-Signature header (when secret is set)
• User-Agent: Uptrue-Webhook/1.0 for easy filtering at your end
• Both incident.created and incident.resolved events on the same URL
• 10-second timeout — your endpoint should ack quickly and process async

Payload schema

POST /your-endpoint HTTP/1.1
Content-Type: application/json
User-Agent: Uptrue-Webhook/1.0
X-Uptrue-Signature: sha256=<hex digest of body>

{
  "event": "incident.created",
  "incident": {
    "id": "uuid",
    "title": "site.example.com is down",
    "status": "open",
    "severity": "critical",
    "started_at": "2026-05-03T12:34:56.000Z",
    "resolved_at": null
  },
  "monitor": {
    "id": "uuid",
    "name": "Production homepage",
    "type": "http",
    "target": "https://site.example.com"
  },
  "timestamp": "2026-05-03T12:34:58.123Z"
}

Monitors that fire Webhook alerts

Every Uptrue monitor type can send to Webhook. Some of the most common:

• HTTP uptime monitoring — site goes down, you get alerted.
• SSL certificate monitoring — 30, 14 and 3 days before expiry.
• DNS record monitoring — unauthorised record changes.
• API endpoint monitoring — body assertions, status codes, latency.
• Security headers monitoring — HSTS, CSP, X-Frame-Options regressions.
• All 24 monitor types →

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