The plain-English version
Defined application behavior when a model, retrieval step, or tool cannot provide a usable result.
Why it matters
It makes failure recoverable instead of disguising uncertainty as a successful answer.
Let’s make it click
A support assistant reports that evidence is missing and offers a conventional search path.
Vibe Bro’s heads-up
Repeating the same request indefinitely can waste time and money; bound retries and make the unresolved state visible.
The docs behind it
Documentation links checked .
Editorial review · October 28, 2026
Supported: Fallback policy correctly treats retry bounds and an explicit unresolved state as application choices.