Signals Overview

Written by Miluše Jelínková

Last updated 19 March 2026

Signal-driven testing is focused on taking various data sources and using intelligent rules to detect quality signals quickly and concisely to resolve quality issues that matter to end users. Signals incorporate event sources, detection rules, mapped actions, and notifications.

Signal Sources

Signals can come from three types of sources:

Runs: To better respond to information from automated runs, set up signals to notify you whenever certain rules are matched. Signals are generated after a run finishes.
Test executions: To better respond to information from automated tests, set up signals to notify you whenever certain rules are matched. Signals are generated as soon as a test is executed. This creates signals before any signals created from runs, which have to wait for the entire run to finish.
App reviews: To respond to end-user sentiment, set up signals to notify you whenever certain rules are matched for all app reviews. Signals are generated after a review is created in the given app store.

Get Started with Signals

To start getting signals from one of these sources, generate signals.

Modify Rules

Once your rules have started generating signals, you may find you want to change their behavior. To do, follow these steps:

In the workspace with your rules, click Signals > Rules.
Click the rule you want to modify.
Choose one of the options to modify the rule.
- Edit: Change any rule settings or delete the rule entirely.
- Set live: For rules not live, start generating signals.
- Pause: For live rules, stop generating signals.

Any changes you make affect what signals are generated going forward.

Add Slack Notifications

To respond quickly to quality signals, add notifications in Slack. If you create a notification setting that includes new signals as events, you get notifications whenever a signal is created. If you find you are getting too many notifications, modify your rules to create signals less frequently.