Iii Trigger Conditions

This is middleware for your iii triggers. Before your handler runs, a condition function evaluates the incoming event and returns true or false. Handler only fires on true, otherwise it's silently skipped. Works across all trigger types: HTTP, durable subscribers, cron, state, stream, whatever. The architecture is clean: same event data flows to both the condition and the handler, so you're filtering on exactly what you'd be processing. It's optional by design, you register a condition function and reference it by ID in your trigger config. Useful when you want declarative filtering without cluttering handler logic, though simple cases might not need the abstraction.

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last updated: Aug 21, 2026

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