Custom Webhook Integration

Send alert data to any HTTP endpoint via custom webhooks. Slack and Discord URLs are auto-routed when used in escalation steps.

Updated 2026-06-15

2 min read

webhook

integration

custom

Custom Webhook Integration#

Pro Plan and Above#

Send alert data as JSON payloads to any HTTP endpoint — perfect for connecting to tools that don't have a native integration.

Setup#

Go to Settings → Notifications → Webhooks

Click "Add Webhook"

Enter the endpoint URL

Optionally add custom headers (e.g., authentication tokens)

Choose which alert types trigger the webhook

Send a test payload to verify

Payload Format#

{
  "event": "site.down",
  "site": {
    "id": "uuid",
    "domain": "example.com",
    "url": "https://example.com"
  },
  "alert": {
    "severity": "critical",
    "message": "Site is not responding",
    "triggered_at": "2026-03-01T10:30:00Z"
  },
  "check": {
    "status_code": 0,
    "response_time_ms": null,
    "error": "Connection timed out"
  }
}

Use in escalation policies#

When you add a step to an escalation policy and paste a webhook URL into the Recipient field, we auto-detect the destination:

URLs containing hooks.slack.com → routed to the Slack webhook channel

URLs containing discord.com/api/webhooks → routed to the Discord channel

Any other https:// URL → posted as a generic webhook

That means one escalation step can target any of those three without extra setup. See Escalation step channels for the full routing matrix.

Use Cases#

Trigger CI/CD pipelines on performance degradation

Log alerts to your own database

Send to custom Slack bots with enriched context

Integrate with internal incident management tools

Was this article helpful?

API Endpoints Reference

Google Search Console & GA4 Integration

Setting Up Alerts

Configure 11 notification channels — email, push, chat, on-call, and automation tools.

API Authentication

Generate API keys, authenticate REST requests with bearer tokens, scope permissions, and rotate credentials safely in LemWatch.

Escalation Step Channels

How each step in an escalation policy maps to a channel — email, Slack, Discord, generic webhook — based on the Recipient value.

Escalation Policies

Build multi-step escalation policies so alerts reach the right person, in the right channel, at the right time.

Back to Help Center