Custom triggers
Build your own alert rules from scratch using a property, an operator, and a value; for cases that preset triggers don't cover.
Use a custom trigger when no preset matches what you need. Custom triggers let you build a rule from scratch using a property, an operator, and a value.
When to use a custom trigger
Pick a custom trigger when you need to:
- Watch a specific threshold ("alert me when Buy Box price drops below $15")
- Apply more granular logic ("alert me when number of sellers increases by more than 3")
- Track properties not covered by presets
For everyday monitoring (Buy Box loss, stock-outs, big price moves), a preset is faster. See Triggers & properties.
How to create one
Open the Alerts module
Open Apps → Alerts and click Create alert.
Choose a custom trigger
Click Create custom trigger.
Pick a property
Choose what to monitor; e.g. Buy Box price, BSR, number of ratings.
Pick an operator
Choose how it should change; e.g. decreases by more than X%.
Set a value
Set a value appropriate for the operator.
Pick the product and recipients
Click Continue, then choose the product (or tag) and the recipient group.
Save
Save the alert.
You can stack multiple triggers in the same alert. The daily email will list each event that fired.
Operators reference
Global operators: Work on any property:
- any change
- is known
- is unknown
- is true
- is false
- matches value
- does not match the value
Numerical operators: For numeric properties only:
- increases
- decreases
- goes over value
- goes under value
- increases or decreases by more than a relative value (%)
- increases by more than a relative value (%)
- decreases by more than a relative value (%)
- increases or decreases by more than an absolute value (#)
- increases by more than an absolute value (#)
- decreases by more than an absolute value (#)
Worked examples
Defend your price floor
- Property: Buy Box price
- Operator: goes under value
- Value: 14.99
- Why: alerts when a tracked ASIN's Buy Box price drops below your breakeven point.
Catch a competitor entering your space
- Property: number of sellers
- Operator: increases by more than an absolute value
- Value: 1
- Why: alerts when 2+ new sellers appear on a product's offer page.
Spot review-bombs early
- Property: % of critical ratings (1–2 star)
- Operator: increases by more than a relative value
- Value: 5%
- Why: alerts when negative reviews jump suddenly.