A FIELD GUIDE TO JEV / VOL. 01
The best of Jev. Real projects, practical guides and ideas from across the internet.
TypeSafe AI@typesafeaiOFFICIALTypeSafe’s official launch announcement introduces the lab and points builders to Jev. It includes Diogo Almeida’s launch film and original introduction.
TypeSafe AI@typesafeaiOFFICIALTypeSafe highlights Jev’s typed-output approach: applications provide state and questions, then act on probabilities, choices or scores. The linked announcement also covers the Venice API integration.
x.comAnswers your code can useExplore this project ↗TypeSafe AI@typesafeaiOFFICIALTypeSafe announces public access to Jev without a waiting list. The official console is the starting point for trying typed decisions in your own application.
x.comJev opens to everyoneExplore this project ↗
Diogo Almeida@CompleteSkepticLAUNCH POSTDiogo Almeida introduces Jev, TypeSafe’s structured decision model. Watch the launch film and explore the original thread for the model’s approach, examples and author-reported performance.
Four official signals. A fresh starting point on each visit.
714 resources
AI-assisted summaries and translations. Check original sources for context and performance claims.
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.
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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.
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Official sync and async Python client. pip install typesafe-sdk.
github.comtypesafe-ai/typesafe-sdk-pythonExplore this project ↗Source-linked curation
Official drop-in TypeSafeClient replacement backed by OpenAI, Anthropic, and compatible LLM APIs, for comparing Jev against chat models.
github.comtypesafe-ai/system-one-adapter-pythonExplore this project ↗Source-linked curation
Public examples of Jev used for robot control, 3D modeling and adjacent control tasks, with sources and archived media.
github.comFrank-ZY-Dou/awesome-jevExplore this project ↗Source-linked curation
Systematic software development framework for AI coding agents upgraded with TypeSafe Jev System One typed decisions.
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Jev play Tetris in real-time against other AI models.
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Fast Rust CLI for TypeSafe Jev: typed decisions, offline linting before you pay.
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Computer use for about $0.0002 a step: OCR the screen, classify the next action with TypeSafe, click. macOS.
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Game where Jev competes against LLMs in Pong.
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A curated list of Jev use cases, projects, SDKs, and resources. Jev is TypeSafe AI's System One model for fast, typed decisions in software — Choice, Score, and Noul with calibrated probabilities.
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WXT browser extension: Jev-powered page clutter removal with reusable template rules.
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An agent project that enforces policies by judging Claude Code tool calls.
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Browser use for coding agents, 3-5x faster than browser-use. MCP server + CLI; TypeSafe Jev decides every step in ~300 ms.
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A macOS tool for identifying safe ports to stop, developed as a GitHub project.
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Rust CLI powered by Jev from TypeSafe.ai that ranks agent skills for the next step using live session context. Includes Claude Code hooks, structured JSON, abstention, and local feedback. Requires a TypeSafe API key.
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A GitHub project that uses Jev to triage and route posts from the live Bluesky firehose with human oversight.
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Data extraction for systematic reviews, quoted from the papers. Ask a trial report and its supplements your extraction form or a RoB 2, ROBINS-I, QUADAS-2 or TIDieR template; Jev points at the lines, every answer is a verbatim quote with its page, you check it and export the table. Files stay in your browser.
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A fire evacuation simulation where each person makes Jev-style decisions.
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A developer project demonstrates Jev's rapid response to browser tasks, with decisions made in approximately 100 milliseconds.
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Multi-axis writing quality checker powered by TypeSafe AI's Jev model. Separate named checks, each with its own verdict and confidence.
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Proof of concept MCP for Typesafe's new Jev AI model.
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A developer project that selects applicable rules for Claude, ensuring only relevant information is shown.
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A developer project for the games shelf, where Jev improvises piano with proper questions.
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Evidence-backed index of real-world Jev (TypeSafe AI System One) use cases: repos, patterns, benchmarks, and measured results.
github.comanandi1989/awesome-jev-usecasesExplore this project ↗Source-linked curation
Curated list of official resources and community projects for TypeSafe, System One models, and Jev, with a GitHub Pages site.
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MCP server that puts TypeSafe Jev on the coding loop in Cursor, Codex, and any MCP client.
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Pre-alpha PostgreSQL extension for TypeSafe AI (Jev) categorical classification.
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Official TypeScript/JavaScript client with inferred answer types. npm install @typesafe-ai/sdk.
github.comtypesafe-ai/typesafe-sdk-jsExplore this project ↗Source-linked curation
A Mac voice diary tool that uses Jev for sorting and integrates with Notion.
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Fast structured Android control loops with TypeSafe Jev and Mobile MCP.
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Typed, confidence-aware agent skill routing with TypeSafe Jev.
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A React app that estimates an age range based on a Korean name, described as a developer tool.
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A research project enabling SQL queries with real type responses.
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A project comparing Jev's performance against chat models in analyzing Fed press conferences.
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A command-line interface for Jev that provides answers and exit codes based on input questions.
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Standalone Android agent for Mobilerun where Jev makes every decision, with a live React studio and an Uber demo.
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A developer project using Jev for plain-language MCP tool calls without an LLM.
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Awesome Jev: source-backed open-source ecosystem radar, plain-language project discovery, and automatic GitHub sync.
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A staged code-review workflow and local dashboard built with TypeSafe Jev.
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A developer project providing a local MCP server for running pre-made Jev question packs.
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A GitHub project converting agent skills into Oxlint plugins that involve Jev.
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A skill for writing and improving programs that call Jev, TypeSafe's System One model.
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Camera-only autonomous drone in MuJoCo with a small judgment model (TypeSafe Jev) in the loop at 2.5Hz.
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Runnable Jev examples through OpenRouter for immediate implementation.
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5–10x faster browser operations: Jev clicks, Codex thinks and verifies. Built at EZCollegeApp.
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Minimal grammY Telegram anti-spam bot powered by TypeSafe Jev.
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A developer project for automatic context clearing in Pi without losing conversation history.
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Claude Code plugin: trim long Bash output with TypeSafe Jev before the model sees it.
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A curated, source-backed list of projects built with Jev, TypeSafe AI's System One model for typed decisions.
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Context-pruning proxy for Claude Code and Codex: Jev judges which history is still needed, measured not claimed. POC here now, heading soon into https://github.com/compozy/compozy.
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Jev controls a city's traffic in a simulation project.
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A small, extensible decision-to-action harness for TypeSafe Jev.
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An awesome collection of Jev use cases, workflows, and agent skills.
github.comwuyoscar/jev-skillExplore this project ↗Source-linked curation
Türkçe ve İngilizce doğal konuşmayla Windows 10/11 bilgisayar kontrolü: OpenAI Realtime, local Whisper, Jev, UI Automation ve Playwright.
github.commstf-svndk/jev-windows-voiceExplore this project ↗Source-linked curation
Draw on a tldraw canvas with your voice and a pointing finger. Jev (TypeSafe System One) decides action, target and place in ~350 ms per spoken word.
github.comgaborishka/jev-canvasExplore this project ↗Source-linked curation
A developer project integrating Jev for judgment tasks within DeepSeek Harness.
github.comHorusJiang/dsh-jev-toolsExplore this project ↗Source-linked curation
Go client for TypeSafe AI's System One API (Jev), with optional Langfuse instrumentation.
github.comfgn/jevgoExplore this project ↗Source-linked curation
Experimental multi-horizon BTC signal generator using TypeSafe Jev probabilities and Binance market data.
github.comWebGrga/btc-jev-signalExplore this project ↗Source-linked curation
Official agent skill for Claude Code, Codex, and compatible agents: primitives, patterns, and how to structure evaluations.
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Ask a yes/no question of every function in a codebase. Ranked answers in seconds, for cents. Grep whose pattern is a question, powered by TypeSafe Jev.
github.comsufianetaouil/everyExplore this project ↗Source-linked curation
A 3D planetary rover sandbox for experimenting with autonomous decisions using TypeSafe AI.
github.comjuancamiloqhz/roverlabExplore this project ↗Source-linked curation
弈瞬：双 Jev 五子棋九宫格输入实验台，逐手查看模型决策，支持真实对局回放与实时对战。
github.comXieChengYuan/jev-gomokuExplore this project ↗Source-linked curation
Measures how well TypeSafe's RLCD-Jev model spots real secret credentials in file snippets.
github.comteyhouse/jev-secret-detectionExplore this project ↗Source-linked curation
Rust client for the TypeSafe System One API (Jev).
github.comkunobi-ninja/kunobi-jevExplore this project ↗Source-linked curation
Does Jev predict stock returns from news? It reads the news well; there is no tradeable alpha. Three arms separate reading from recall.
github.comGaurav-Gosain/jev-alpha-benchExplore this project ↗Source-linked curation
MacOS computer use driven by Jev (TypeSafe System One) as the decision maker.
github.compaulsmith/computer-use-jevExplore this project ↗Source-linked curation
TypeSafe's Jev plays Atari Pong. One typed Choice question per frame, no coordinates sent to the model.
github.comsafzanpirani/pong-jevExplore this project ↗Source-linked curation
Unofficial Go SDK for the TypeSafe AI System One API — 1:1 parity with the official JS and Python SDKs. Not affiliated with TypeSafe AI.
github.comvalksor/typesafe-sdk-goExplore this project ↗Source-linked curation
Helping JEV speak <3.
github.commkotlikov/jev-grugExplore this project ↗Source-linked curation
On-device iPhone visual decision tool using MLX and Qwen3-VL direct option logits.
github.comNullPo-jp/PocketJevExplore this project ↗Source-linked curation
A Go client for the TypeSafe API, aimed at developer tools and applications.
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4 HIGHLIGHTS
4 clicks / 7d
Agents & browsers
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LAB PICK
Devices & robotics
Games & real time
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Decisions & routing
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