evaluate( )

Pattern

Jev Sub-agent Delegation

Pick one specialist with a Jev choice, then run only that agent when confidence and selected probability both clear their floors.

BeginnerSep 2026View the full pattern on desktop
Jev Sub-agent Delegation preview

Problems solved

  • Choose one specialist before any of them run
  • Hold the request when the choice is to ask first
  • Keep confidence and probability floors in application code

Use cases

  • Route a request to research, data, code, or design
  • Refuse to delegate when the ask is ambiguous
  • Show the Jev distribution before the specialist result

AI SDK APIs

experimental_evaluategenerateTextgateway

Tags

jevevaluationtyped-decisionschoicesub-agentai-sdk

Requirements

Node.js
24+
Memory
256MB
Other
  • Vercel AI Gateway API key

Environment variables

External services

vercel-ai-gatewayupstash

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