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.

1,262resources16languages
TypeSafe AI THE OFFICIAL SIGNAL 4 HIGHLIGHTS
Diogo Almeida@CompleteSkepticLAUNCH POST

The Jev launch post

Diogo Almeida introduces Jev, a structured decision model from TypeSafe. This resource provides an overview of the model's core approach, practical examples, and performance metrics as reported by the author.

Start with the Launch Post. Explore four official signals.

1,262 resources

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

GhalebDweikat

winnow

A calibrated context sieve for Claude Code: every tool result is judged by a System One model before it enters context.

winnow
Agents & browsersEnglish

TypeSafe AIJev HOLDFIT 35%CAT 22%

samtay32

jev-system-architect

System-architecture skill for TypeSafe AI Jev/System One — find fuzzy semantic judgment and turn it into small Choice/Score/Noul primitives.

JEVLAB decorative pixel illustration; not source mediaJEVLAB ART
Start hereEnglish

TypeSafe AIJev HOLDFIT 65%CAT 74%

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zefir1990

openjev-experiments

This repository provides a collection of experiments using openjev, an open-source runner designed for Jev-style option-logit processing. It demonstrates how to implement and test these specific inference techniques when running local language models.

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Jake Reardon

The Jev-enator

This project implements three Claude Code hooks designed to query Jev for specific data. It demonstrates a practical approach to integrating external information retrieval directly into development workflows using custom automation hooks.

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Hexdigest123

typesafe-comment

This Python package utilizes typesafe.ai to evaluate code comments based on specific heuristics. It demonstrates an automated approach to assessing documentation quality within a codebase by applying structured analysis to developer-written comments.

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Nick DeJesus 🛒🎉 - Former Unpaid CTO @BTPipeline

Jevals

Jevals provides a local testing environment designed for evaluating Jev requests. The project demonstrates how users can refine and improve their output quality by applying specific primitive operations within a controlled development workflow.

Jevals
Research & dataEnglish

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hamakyo

jev-starter

This repository provides a template for implementing policy-driven decision workflows using Jev. It demonstrates patterns for confidence routing, fallback mechanisms, and RAG integration within TypeScript applications to improve reliability.

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Decisions & routingEnglish

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somoore

Interlock

Interlock demonstrates a security framework using Jev as a sensor to gate access to agent tools. This project explores methods for enhancing operational control and functional safety within autonomous agent environments.

Interlock
Agents & browsersEnglish

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carlsonchik

judging-with-typesafe

This project provides a skill for Letta agents to perform criteria-based evaluations using the TypeSafe System One framework. It demonstrates how to integrate Jev-based logic for structured decision-making processes within agentic workflows.

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SmalltownRobot

Logical-fallacy detector

This Brave browser extension analyzes social media posts to identify logical fallacies in real time. It marks content with a green flag when it detects well-reasoned arguments, aiming to assist users in evaluating the quality of online discourse.

Logical-fallacy detector
Agents & browsersEnglish

TypeSafe AIJev HOLDFIT 5%CAT 65%

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Vybhav

Hook panel A/B tester

This tool provides near-real-time scoring for social media hooks by evaluating them against approximately 100 distinct personas. It demonstrates a method for creators to test content performance across diverse audience segments.

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Decisions & routingEnglish

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Zahrannnn

zcode-jev

zcode-jev provides a typed judgment layer designed for coding agents. It acts as a gatekeeper between product requirement documents and deployment, offering a provider-agnostic framework for Jev-ready development workflows.

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nidhisinghattri

Model router CLI

This command-line interface tool demonstrates an automated routing system for Jev. It accepts user tasks and subscription lists to determine which specific model or agent is best suited to process the request based on the provided input parameters.

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Agents & browsersEnglish

TypeSafe AIJev HOLDFIT 52%CAT 98%

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vinilana

jev-eval-agent

This project provides a personal assistant agent built on Vercel's eve. It utilizes 100 mocked tools to compare the efficiency of Jev versus standard LLM tool selection processes by measuring the number of steps required for task completion.

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Agents & browsersEnglish

Source-linked curation

Charlyhno-eng

jev-document-classification

JEV Document Classification enables the rapid and cost-effective classification of text-based documents using AI, leveraging TypeSafe's "System One" model.

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Decisions & routingEnglish

TypeSafe AIJev PASSFIT 74%CAT 98%

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fatwang2

awesome-jev by fatwang2

This repository serves as a curated directory of Jev-based projects. It provides a standardized GitHub workflow designed to facilitate the review and integration of Jev-only development tools within the ecosystem.

awesome-jev by fatwang2
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Ian Nuttall

Reply-Guy Filter

This community tool uses Jev to automatically identify and filter unwanted reply-guy comments on social platforms. It demonstrates a practical application of automated content moderation to improve user interaction quality by filtering specific types of unsolicited responses.

Tools & appsEnglish

TypeSafe AIJev HOLDFIT 51%CAT 75%

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larguesa

jev-search

This Python CLI tool demonstrates an experimental approach to semantic line searching using TypeSafe Jev and OpenRouter. It provides a lightweight interface for querying data without requiring complex runtime dependencies.

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Decisions & routingEnglish

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TypeSafe AIOFFICIALTRANSLATED
TypeSafe AITypeSafe AITypeSafe AI

TypeSafe AI Client SDKs

This official reference documentation provides a comprehensive overview of available Client SDKs for TypeSafe AI. It serves as a foundational resource for developers looking to integrate TypeSafe AI capabilities into their own applications using supported programming languages.

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Start hereEnglish

TypeSafe AIJev PASSFIT 94%CAT 99%

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ranjan2829

AskJev

AskJev provides an autonomous agent designed for website interaction. The project implements a TypeSafe System One architecture to include a safety guard that prevents irreversible user actions during automated browsing tasks.

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Agents & browsersEnglish

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skillsagentes.com

Jev System One Overview

This resource outlines the core functions and evaluation metrics of Jev, presented as the System One model by TypeSafe. It provides an overview of how the system operates and the criteria used to assess its performance in agentic workflows.

Jev System One Overview
Agents & browsersEnglish

Source-linked curation

0xArx

jevegis

Guardrails for LLM apps in one API call. Prompt injection, jailbreaks, leaks, unsafe content. Built on TypeSafe Jev. MIT.

JEVLAB decorative pixel illustration; not source mediaJEVLAB ART
Tools & appsEnglish

TypeSafe AIJev PASSFIT 72%CAT 81%

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abhixhek

jevcal

jevcal provides a framework for calibrating and thresholding TypeSafe Jev decision models. It demonstrates methods for drift-checking these models against an LLM teacher to improve reliability without relying on manual confidence threshold guessing.

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Research & dataEnglish

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Zahle Khan

Jev board

Jev board is a tool designed for ambient intelligence interfaces. It demonstrates the integration of fast, reliable models to facilitate responsive user interactions within a generative UI framework.

Tools & appsEnglish

TypeSafe AIJev HOLDFIT 23%CAT 46%

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AbdelStark

s1-rs

s1-rs provides a typed System One layer for Rust, focusing on choice, scoring, and Noul mechanisms. This library demonstrates an architectural approach to integrating intuitive decision-making patterns directly into Rust applications through structured, type-safe abstractions.

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Misbah Syed

A page-by-page OCR router

This Jev-powered system automates document processing by analyzing PDFs page by page. It demonstrates a decision-making workflow that identifies which specific pages require OCR, aiming to optimize resource usage during document digitization tasks.

A page-by-page OCR router
Decisions & routingEnglish

TypeSafe AIJev HOLDFIT 58%CAT 98%

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Kevin Kern

Android End-to-End Testing with Jev

This demonstration explores using Jev for automating Android end-to-end testing workflows. The creator claims the tool achieves faster execution speeds compared to existing alternatives, though these performance metrics remain unverified by independent benchmarks.

Android End-to-End Testing with Jev
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KamilPostrozny

pi-fast-jev-compaction

This repository provides an extension designed to accelerate JEV compaction processes within the pi environment. It demonstrates a specific implementation approach for optimizing data management tasks, though users should independently verify performance improvements in their own production workflows.

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Agents & browsersEnglish

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jtsang4

jev-cli

This command-line interface facilitates interaction with the Jev evaluation model. It demonstrates a workflow for submitting typed queries and receiving responses formatted as structured JSON, aiming to streamline automated evaluation processes for developers working with TypeSafe AI systems.

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Research & dataEnglish

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LAB PICKTypeSafe AIOFFICIALTRANSLATED
TypeSafe AI

Jev Public Access

TypeSafe has removed the waitlist for Jev, allowing public access to the platform. Developers can use the official console to integrate and test typed decision-making capabilities within their own software applications.

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Start hereEnglish

TypeSafe AIJev PASSFIT 89%CAT 100%

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markjaquith

typesafe-ai-playground

This repository serves as a sandbox for testing Jev, the System One model from TypeSafe. It provides a practical environment for developers to explore the model's capabilities through various experimental implementations and code samples.

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Nikunj Kothari

Automated Snack Scoring with Jev

This project demonstrates using Jev to evaluate 3,000 children's snacks based on multiple criteria. The creator reports completing the entire assessment process in 28 seconds, showcasing the potential for rapid, automated decision-making in large datasets.

Decisions & routingEnglish

TypeSafe AIJev HOLDFIT 67%CAT 45%

TypeSafe AIOFFICIALTRANSLATED
TypeSafe AITypeSafe AITypeSafe AI

Intent routing

This official TypeSafe guide explains the architectural pattern of intent routing. It demonstrates how to categorize user inputs to direct requests toward specific processing logic, ensuring more accurate and reliable handling of complex conversational tasks.

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Start hereEnglish

TypeSafe AIJev HOLDFIT 90%CAT 64%

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valksor

typesafe-sdk-php

This unofficial PHP SDK provides an interface for the TypeSafe AI System One API. The creator claims it maintains functional parity with official JavaScript and Python SDKs, though it is not affiliated with TypeSafe AI.

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Start hereEnglish

Source-linked curation

TypeSafe AIOFFICIALTRANSLATED
TypeSafe AITypeSafe AITypeSafe AI

Confidence-gated routing

This pattern demonstrates a method for routing requests based on model confidence scores. It teaches how to implement conditional logic to ensure higher quality outputs by directing tasks to appropriate processing paths.

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Decisions & routingEnglish

TypeSafe AIJev PASSFIT 91%CAT 86%

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www.youtube.com

Getting Started with Jev

This resource demonstrates how to access Jev via the Vercel AI Gateway. It outlines the integration process and discusses potential business applications for the platform, providing a practical guide for users looking to implement Jev in their workflows.

Getting Started with Jev
Tools & appsEnglish

TypeSafe AIJev HOLDFIT 52%CAT 93%

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AVB

Jev Recommendation Engine Integration

This research demonstrates how Jev integrates into recommendation systems. The creator claims the model generates over 70 personalized suggestions per user, citing specific operational costs per user for the implementation.

Jev Recommendation Engine Integration
Research & dataEnglish

TypeSafe AIJev HOLDFIT 46%CAT 22%

Combos Fun by Converge.AI

Combos FPS

A community post compares Jev's performance to Astra in gaming scenarios, highlighting its unique approach.

Combos FPS
Games & real timeEnglish

TypeSafe AIJev HOLDFIT 61%CAT 72%

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GhrezaKh74

JevTicktRouter

This project demonstrates a ticket triage system built with .NET 10 and React 19. It utilizes TypeSafe Jev to implement structured, AI-driven routing for incoming support requests.

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bestagentkits

typesafe-demo-mcp

This repository provides an MCP server implementation that exposes TypeSafe System One judgments, including noul, choice, and score, as functional tools for AI agents. It demonstrates how to integrate structured judgment data into agentic workflows.

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Agents & browsersEnglish

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trophee-bot

typesafe-oracles

This repository evaluates TypeSafe System One primitives including Choice, Score, and Noul. It demonstrates how typed oracle structures can provide more reliable outputs compared to standard large language model calls for specific decision-making tasks.

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Start hereEnglish

Source-linked curation

TypeSafe AIOFFICIALTRANSLATED
TypeSafe AITypeSafe AITypeSafe AI

Classifying RAG passages

This TypeSafe AI guide demonstrates techniques for categorizing retrieved passages within RAG pipelines. It teaches developers how to implement classification logic to improve the relevance and accuracy of information retrieval systems.

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Decisions & routingEnglish

TypeSafe AIJev PASSFIT 88%CAT 92%

kitze

unclutter

WXT browser extension: Jev-powered page clutter removal with reusable template rules.

unclutter
Agents & browsersEnglish

TypeSafe AIJev HOLDFIT 54%CAT 81%

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Mandrilsquad1441

jev-model-router

This plugin integrates with Claude Code and other tools to select AI models based on Jev decision logic and OpenRouter pricing. It aims to balance intelligence, speed, and cost for specific tasks.

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AstroHan

jev-harness

This developer project demonstrates a filtering mechanism for Jev that processes tool results before they reach the model. It aims to enhance the operational efficiency of agent-based systems by streamlining data input.

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everyinfra

jev-radar

This repository provides a comprehensive tracker for the Jev ecosystem, documenting over 220 cases. It offers confidence-graded entries that are automatically rescanned every three hours and includes a guide for API access.

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nwn

Understanding Jev Fundamentals

This article provides a conceptual overview of Jev, clarifying its core purpose and technical boundaries. It serves as a foundational guide for developers looking to distinguish between Jev's intended functionality and common misconceptions.

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Tools & apps日本語

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shivam2003-dev

typesafe-triage-guard

Three composable judgment pipelines on TypeSafe's Jev: support-ticket triage, observability alert triage, and a deploy-risk gate.

JEVLAB decorative pixel illustration; not source mediaJEVLAB ART
Decisions & routingEnglish

TypeSafe AIJev PASSFIT 78%CAT 100%

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shaharia-lab

jev-cli (shaharia-lab)

This command-line tool integrates with the TypeSafe AI Jev model to perform structured analysis on text. It supports yes/no, multiple-choice, and rubric-based queries, returning calibrated probabilities for use in shell scripts, CI pipelines, and AI agent workflows.

JEVLAB decorative pixel illustration; not source mediaJEVLAB ART
Agents & browsersEnglish

Source-linked curation

ChetasLua

jevmeter

Put a live Jev (TypeSafe) meter on any video: every sentence scored, rendered as a 16:9 edit.

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Creative & growthEnglish

TypeSafe AIJev HOLDFIT 67%CAT 51%

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Romàn

Automated Lead Scoring with Jev

This demonstration showcases Jev processing 700 leads to predict outreach performance. The creator claims the system completes this analysis in 40 seconds, illustrating a potential workflow for rapid lead qualification and messaging optimization.

Agents & browsersEnglish

TypeSafe AIJev HOLDFIT 63%CAT 85%

mstf-svndk

jev-windows-voice

Türkçe ve İngilizce doğal konuşmayla Windows 10/11 bilgisayar kontrolü: OpenAI Realtime, local Whisper, Jev, UI Automation ve Playwright.

JEVLAB decorative pixel illustration; not source mediaJEVLAB ART
Agents & browsersEnglish

TypeSafe AIJev HOLDFIT 69%CAT 78%

AbdelStark

jev-benchmarks

Probability-aware evaluation for typed decision models: calibration, selective risk, latency, and reproducible benchmarks.

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Research & dataEnglish

TypeSafe AIJev HOLDFIT 68%CAT 98%

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mzainzulifqar

jev-php-sdk

This SDK enables PHP developers to integrate Jev into their applications. It facilitates sending text and typed queries while retrieving structured answers with confidence scores, supporting PSR-18 clients and various Laravel versions.

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TheGali

terrarium

terrarium is a sandbox environment where a TypeSafe System One model operates a creature's controls. The project demonstrates how code-driven logic can be used to simulate and interact with a virtual world.

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TrainLCD

TrainLCD Jev Rerank

This pull request integrates Jev into the station-suggestion reranking logic for the TrainLCD transit application. It demonstrates how Jev can be implemented to refine search results and improve the relevance of transit station suggestions within a mobile environment.

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