Skip to content
JevDirectory.org
OfficialPractices & PatternsVerified 2026-09-20

Advanced: Structure

Instructions, option descriptions, score levels, and noul criteria all accept JSON, so you can label question parts, pass schemas and taxonomies, and keep candidate paths alive.

Category
Practices & Patterns
Published by
TypeSafe AI
Author
Added
2026-09-20
Tagsofficialprimitivesarchitecturepatterns

Highlights

  • Every field is an entry type: string, object, array, or null.
  • Reference state fields by key name in backticks, such as `potential_duplicate`.
  • Structured options can state what an option covers, what it is not_for, and examples.
  • Taxonomy walks pass a subtree per option, so every candidate path stays available in one call.

Quickstart

json
"instructions": {
  "question": "Does the claimed sender identity conflict with the sending domain?",
  "compare": ["ticket.sender.display_name", "ticket.sender.email"],
  "focus": "Compare the named organization with the email domain."
}

Watch out

Subtrees grow fast; trim a branch to its direct children plus a sample of leaves to keep the request affordable.

More like this

Break a judgment into atomic Score questions, normalize each by its top level, and combine them with weights you control in code, as in the resume example's four scored dimensions.
Practices & Patterns#official#patterns#score
Official
Architectural patterns for System One systems: speculative fan-out, confidence-gated routing, composite scoring, and intent routing.
Practices & Patterns#official#patterns#architecture
Official
Design AI-powered software by keeping code in control and giving System One narrow, structured decisions to make.
Practices & Patterns#official#patterns#architecture
Official
Back to all resources

From the community

Posts from builders shipping with Jev right now.

A really smart switch statement

hype-free explanation of jev: jev does not replace gpt / claude jev is just a *really* smart switch statement like if 2016 ml classifiers got 2026 levels of intelligence it's a new* type of tool that will make a lot of workloads insanely fast, cheap, and accurate * = and by Show more

Diogo Almeida
Diogo Almeida
TypeSafe AI
@CompleteSkeptic

After co-inventing ChatGPT, I kept asking myself: why have superhuman chat models not led to AGI? I’ve spent the last 2 years in stealth building a new way to train models (RLCD), and a new type of frontier AI model that we are releasing today: Jev • 20-200x faster • 40-400x

Reply

When a designer gets Jev