Mobile alerting with tracking & escalation for Checkly



Checkly is an easy-to-use SaaS solution that checks for API and Synthetic monitoring.  Checkly validates site transactions and alerts when there is a slowdown in production or an outage. SIGNL4 adds an additional layer into this workflow providing targeted alerts to on-call team members, augmented alerts for easy visibility and persistent notifications. With persistent notifications and escalation chains there will never be a critical alert that goes unattended. SIGNL4 also offers ad-hoc collaboration between team members for each and every alert, so Subject Matter Experts can be looped in to help resolve issues.

 How it Works

The SIGNL4 team email address intercepts notifications and alerts on call team members.  A SIGNL4 webhook can also establish a connection with Checkly to enable mobile notification and alerting capabilities for operational and network teams.

 Integration Capabilities

  • Forwards Checkly alerts to SIGNL4 for mobile alerting
  • Uses JSON payload via Webhook
  • Uses SMTP email to connect to your SIGNL4 team
  • Staff can acknowledge and take ownership for critical incidents that occur
  • Communicate within an alert to address a problem
  • Alerts are escalated in case of no response
  • On-call scheduling to alert the right people at the right time


  • API Monitoring
  • Synthetic Monitoring
  • Website Monitoring

Incidents in Checkly. Connecting via secure webhook

Event categorization, routing and automated delivery

Persistent Notifications by push, text and voice call with Tracking, Escalation and Confirmation to Staff on Duty

There are two ways for integrating SIGNL4 with Checkly. This is via HTTP request or via email.


1. HTTP Request

Let’s customize a webhook integration within Checkly to make sure that we are sending an alerts that are raised to our SIGNL4 team. To configure alerting, click on the link labeled as such in the Tweak Your Alerting box from the Checkly Dashboard.

Click add channel for the Webhook section.

Enter the SIGNL4 webhook that is provided with your SIGNL4 account

Testing the webhook will immediately send an alert to SIGNL4 and team members will be notified via push, SMS and voice calls.


Resolve Alerts: In order to support the resolution of alerts in SIGNL4 you can just add the following part to your SIGNL4 webhook URL:


So, the complete URL looks like this:

Where “team-secret” is your SIGNL4 team secret. You then need to add the parameters “sensorid” and “laststatus” to the Payload:

Title=%device: %name&Message=%message&sensorid=%sensorid&laststatus=%laststatus

You can find more information about the resolution of alerts in SIGNL4 here: You can easily test the SIGNL4 notification template from here.

Then, at Devices -> Notification Trigger, you can specify your notification trigger including the conditions and the SIGNL4 notification template.


2. Email

Create a user within Checkly with the name of SIGNL4 and your team email address. Assign that user to a group that is monitoring existing sites.


At this point the next time something triggers an alarm, your S4 team will be notified via the mobile app.

See left how an alert looks in S4.

SIGNL4 can further increase the visibility of alerts through its Signals and Services section. Augmenting the color and icon of alerts will provide more relevant information at a glance without having to open the alert.


Change alert color and override title + text 

Override text, colors and titles are triggered by keywords set within the mobile app.

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