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A FIELD GUIDE TO JEV / VOL. 01

SMALL
DECISIONS.
BIG
POSSIBILITIES.

The best of Jev. Real projects, practical guides and ideas from across the internet.

Explore the labGuides
1,195resources16languagesFind something
worth building.
IN THE SPOTLIGHT SOURCE: X
Gregor Zunic@gregpr07

Browser Use + Jev

Gregor Zunic's flight-search demo with a dynamic DOM action space.

Browser Use + Jev Explore this project
Source linked · creator-reported demoView on X

01 / A small decision engine. A whole new way to build.

1,195 resources / The collection

SOURCE-LINKED, ALWAYS.

AI-assisted summaries and translations. Check original sources for context and performance claims.

Faadil ShaikX

Jev plays Super Mario Bros.

Jev controls Super Mario Bros. using fast inference and structured outputs, demonstrating potential for real-time applications.

Games & real timeEnglish
Open original
browser-useGitHub

Jev Ultrafast

Browser Use's ultrafast agent: Jev picks the operation and DOM element in one request; a small LLM only writes text when typing is needed.

Agents & browsersEnglish
Open original
Chris TateX

Instant generative UI

Experiment combining JSON rendering with Jev to create instant generative user interfaces for rapid component and design system rendering.

Tools & appsEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIDOCS

Quick start

Shortest path from an API key to a typed decision.

Start hereEnglish
Open original
tamaratranGitHub

fast-jev-compaction

Claude Code plugin that replaces the compaction summary with Jev decisions: every tool call and result is scored in one fast request, stale ones are dropped or truncated, everything kept stays verbatim.

Agents & browsersEnglish
Open original
Higgsfield AI 🧩X

Higgsfield model routing

Demo showing Jev selecting the most suitable AI models for video and image generation tasks on Higgsfield.

Decisions & routingEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIWEB

Manifesto

The case for machine-native intelligence built for software, not conversation.

Start hereEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIDOCS

HTTP API reference

Request and response contract for POST /v1/systemone.

STATE → QUESTIONS → DECISIONSconst answer = await client.systemOne({
  state, questions
});
// intelligence, in your code.
Start hereEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIWEB

Playground

Paste a state, add questions, and see typed answers in the browser.

Start hereEnglish
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LAB PICKOFFICIAL
TypeSafe AIDOCS

Primitives

Choice, Score, and Noul: the three question types and what they return.

STATE → QUESTIONS → DECISIONSconst answer = await client.systemOne({
  state, questions
});
// intelligence, in your code.
Start hereEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIDOCS

Cookbooks

Reproducible recipes: parallel questions, reranking, guardrails, citation checks, extraction, hierarchical classification.

STATE → QUESTIONS → DECISIONSconst answer = await client.systemOne({
  state, questions
});
// intelligence, in your code.
Start hereEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIDOCS

Jev 1.13 jaggedness

Known failure modes of the current public model, documented by TypeSafe.

STATE → QUESTIONS → DECISIONSconst answer = await client.systemOne({
  state, questions
});
// intelligence, in your code.
Start hereEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIDOCS

Documentation

Introduction, primitives, patterns, cookbooks, HTTP API, and SDK references.

STATE → QUESTIONS → DECISIONSconst answer = await client.systemOne({
  state, questions
});
// intelligence, in your code.
Start hereEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIDOCS

Introduction

Official TypeSafe reference: Introduction.

STATE → QUESTIONS → DECISIONSconst answer = await client.systemOne({
  state, questions
});
// intelligence, in your code.
Start hereEnglish
Open original
LAB PICK
typesafeWEB

Discord

Official TypeSafe server. Builder demos live in the Show and Tell channel.

Start hereEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIDOCS

Patterns

Speculative fan-out, confidence-gated routing, composite scoring, and intent routing.

STATE → QUESTIONS → DECISIONSconst answer = await client.systemOne({
  state, questions
});
// intelligence, in your code.
Start hereEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIWEB

Workflow evals

Published eval methodology and per-model results for System One workflows.

Start hereEnglish
Open original
LAB PICKOFFICIAL
TypeSafe AIDOCS

Smart home demo

Official interactive demo of speculative fan-out: many questions in one call, code keeps the relevant answers.

STATE → QUESTIONS → DECISIONSconst answer = await client.systemOne({
  state, questions
});
// intelligence, in your code.
Start hereEnglish
Open original

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