The full directory

All Jev AI model resources

Entries for TypeSafe AI's flagship System One model — official docs and SDKs alongside community clients, tools, and write-ups.

Entries: 3,919
Categories: 11
Official: 102
Community: 3,817
Source sites: 293
Deep dives: 3,919

By format

3919

Docs169
Repos & sites3102
Videos74
Posts104
Articles392
Playgrounds78

Updated Nov 6, 2026

Browse the Jev AI model by category

11 ways into the ecosystem. Each category page leads with its own shortlist of starting points.

Browse the Jev AI model by use case or industry

The same directory, sliced by what you are building and who you are building it for.

Jev use cases13 ways to put Jev to work, from classification and routing to decision gating and evaluation.

Jev industries14 sectors building with Jev, from software and security to healthcare and robotics.

All 3919 Jev AI model resources

Search the full directory, or filter by category and tag.

Showing 2065–2112 of 3919 resources

jev-market-reflex

Bun app that feeds live Kraken BTC, ETH, and SOL order-book features into Jev for typed BUY, SELL, or HOLD calls and runs them through deterministic paper execution with an SSE dashboard.

Jev Agents & MCP#community#github

Community

zzsong1023/jev-market-reflexTypeScript

jev-rs

Community Rust client for the TypeSafe API with async and optional blocking clients, typed Noul, Choice, and Score questions, retries, and structured errors.

Jev Repos & SDKs#community#github

Community

abeldzan/jev-rsRust

ComfyUI-ScriptFlow

ComfyUI script nodes offering a restricted Python-like interpreter with multiple text and numeric ports, plus a Jev variant that branches on yes, choice, and score answers.

Jev Models & Reimplementations#community#github

Community

kantan-kanto/ComfyUI-ScriptFlowPython

jev-policy-engine

Python policy engine that defines Noul, Choice, and Score rules in YAML with tags, audit mode, and fail-closed handling, usable from a CLI or backend code.

Jev Repos & SDKs#community#github

Community

BhavinM/jev-policy-enginePython

jev-deep-dive

Long-form Jev writeup that maps each conclusion to official docs, vendor evals, integrations, community reproductions, and press, separating contract facts from unverified claims.

Jev Tools & CLIs#community#github

Community

LouisUltra/jev-deep-divePython

jev-mcp

MCP server that exposes Jev classify, score, yes-no check, risk gate, and multi-question decide tools to coding agents through one Jev call per tool.

Jev Agents & MCP#community#github

Community

codaaiteam/jev-mcpJavaScript

promptrejectormcp

Prompt-injection scanner that combines deterministic checks with focused Jev judgments and a configurable reasoning model, exposed over CLI, SDK, HTTPS, MCP, and editor plugins.

Jev Agents & MCP#community#github

Community

revsmoke/promptrejectormcpTypeScript

ha-gutcheck

Home Assistant custom integration that gives a weekly checkup for unavailable entities, risky updates, stuck integrations, and missing areas, types, labels, and recorder trims.

Jev Integrations & Adapters#community#github

Community

funkadelic/ha-gutcheckPython

home-assistant-typesafe

Home Assistant conversation integration that routes Assist utterances with Jev Choice and Noul scoring, binding intents and entities locally before falling back on harder requests.

Jev Agents & MCP#community#github

Community

allenporter/home-assistant-typesafePython

omarchy-mail

Terminal Gmail client for Omarchy where categories are Gmail labels, Jev files confident matches automatically, and a sidebar grades reply clarity, tone, length, next steps, and coverage.

Jev Repos & SDKs#community#github

Community

petrzpav/omarchy-mailPython

TibiaJevBot

Autonomous Tibia bot that polls OTClient game state every 250ms, asks five parallel Jev survival, targeting, spell, and movement questions, and executes the returned actions.

Jev Demos & Experiments#community#github

Community

GabrielBigardi/TibiaJevBotTypeScript

gosys1

Go SDK for the SystemOne API using only the standard library, sending state plus Noul, Choice, and Score questions and returning structured answers with retries and typed errors.

Jev Repos & SDKs#community#github

Community

robertjndw/gosys1Go

jev-typesafe-ai

Community notes and runnable curl examples for calling Jev's System One API, covering Choice, Score, and Noul questions plus a free browser playground for trying typed decisions.

Jev Agents & MCP#community#github

Community

codaaiteam/jev-typesafe-ai

Jevest

GitHub Action that reviews pull requests with a read-only finder agent plus a refuting verifier, using Jev only to triage, route, label, and gate merging.

Jev Tools & CLIs#community#github

Community

tincke10/JevestTypeScript

n8n-nodes-jev

Community n8n node that adds Jev Choice, Score, and Noul questions to workflows, keeping native answers, model version, token usage, and latency for confidence routing.

Jev Integrations & Adapters#community#github

Community

rahulthakore16/n8n-nodes-jevTypeScript

using-typesafe-and-pinecone

Example collection pairing Pinecone retrieval with Jev judgments, including a reranking demo that narrows full-text candidates by natural-language criteria.

Jev Tools & CLIs#community#github

Community

pinecone-io/using-typesafe-and-pineconeJavaScript

agent-guard

Claude Code PreToolUse hook that screens Bash, file edits, and tool calls with Jev risk, policy, and allow-ask-deny judgments before execution.

Jev Agents & MCP#community#github

Community

NieXi/agent-guardPython

adk-go-typesafe

Go integration bringing Jev Choice, Score, and Noul to adk-go with a typed client, function tool, routing agent, assessment callbacks, and context filter.

Jev Agents & MCP#community#github

Community

craigh33/adk-go-typesafeGo

jev-trader

Chrome side-panel bot that consults Jev each interval for trade direction on an NSE stock via the Zerodha web session, with paper trading on by default.

Jev Tools & CLIs#community#github

Community

Shashank-H/jev-traderJavaScript

pilot-typesafeai-jev

Pilot wiring Jev into LangGraph routing and Deep Agent guardrails with executed notebooks, showing where code, Jev judgments, and chat-model replies each belong.

Jev Models & Reimplementations#community#github

Community

jyje/pilot-typesafeai-jevJupyter Notebook

jev

Minimal Go client for Jev using only the standard library, with typed Choice, Noul, and Score questions plus local confidence thresholds.

Jev Tools & CLIs#community#github

Community

drpaneas/jevGo

Jev-trading

No-code desktop terminal that puts Jev Buy, Sell, and Hold calls behind a confidence slider, with exchange connections, strategy canvas, and backtesting lab.

Jev Guides & Articles#community#github

Community

Jev-trading/Jev-tradingPython

Aetheria

Java RAG assistant over org documents with hybrid retrieval and citations, using Jev optionally for chunk reranking and answer-grounding checks.

Jev Tools & CLIs#community#github

Community

zakariaimtiaz/AetheriaJava

agent-harness-with-jev-llm

Demo of the LangChain Jev harness pattern in LangGraph: a fast classifier routes events and gates a risky tool call, leaving open-ended reasoning to a chat LLM. Entry is POST /events; output lands in JSONL files.

Jev Agents & MCP#community#github

Community

dhirajpatra/agent-harness-with-jev-llmPython

chess-with-jev-

Hybrid chess experiment pairing Jev strategic candidate selection with a deterministic alpha-beta search engine inside a Chrome extension that plays on Chess.com with live telemetry.

Jev Tools & CLIs#community#github

Community

Deepender25/chess-with-jev-TypeScript

typesafe-go

Community Go SDK for the TypeSafe System One API: send one state with a map of typed Noul, Choice, and Score questions and branch on calibrated probabilities. Zero dependencies, verified against the live API.

Jev Agents & MCP#community#github

Community

Nibir1/typesafe-goGo

typesafe-jev-plugin

Claude Code plugin that turns classification problems into reusable .sig.json signatures, then scores CSV, Excel, or text datasets row by row through the Jev API and writes results back to Excel.

Jev Integrations & Adapters#community#github

Community

arnab621/typesafe-jev-pluginPython

skillranker

Standalone Rust CLI that ranks an agent's available skills for the next step with two Jev evaluation passes over live session context, plus an explicit none-of-these option. Advisory only; it never loads skills itself.

Jev Agents & MCP#community#github

Communityivorpad/skillranker

mood-pixels

Tiny mood tracker: write a few words about your day and Jev returns one of five moods plus an energy score and self-care nudge, plotted on a Year in Pixels calendar stored in the browser.

Jev Tools & CLIs#community#github

Community

mahshid/mood-pixelsTypeScript

jev-crawlers

Unix-style bug-discovery pipeline: small tools pass JSON lines through seed, expand, judge, verify, and report stages, spending one cheap Jev judgment per code node to chase leads across callers and configs.

Jev Integrations & Adapters#community#github

Community

Thingscorp/jev-crawlersJavaScript

JevNext

Learning project rebuilding a Jev-style decision model on a frozen Qwen3-0.6B backbone with a rank-16 LoRA, served alongside text generation from one weight set on Apple Silicon. Explicitly not production software.

Jev Models & Reimplementations#community#github

Community

DejaAI2/JevNextPython

jev-crash-course

Eleven-level Jev course from hello-world to a ticket-triage capstone, pairing short lessons with runnable scripts against the live API and using LiteLLM so the writing half works with any provider.

Jev Benchmarks & Evaluations#community#github

Community

nadeemcite/jev-crash-coursePython

dsh-opencli

DeepSeek Harness plugin that gives agents hands in the user's own logged-in browser: 176 site adapters with 200+ one-shot commands plus generic page primitives, with write actions behind an approval gate.

Jev Integrations & Adapters#community#github

Community

IKEASven69/dsh-opencliJavaScript

jev-lab

Portuguese-language customer-service study with two Jev experiments: a pre-agent guardrail filtering inbound messages and a per-turn pre-evaluator escalating only failures and borderline calls to an LLM judge.

Jev Benchmarks & Evaluations#community#github

Community

JoaoClemer/jev-labTypeScript

jeb

Command-line client for the System One API aimed at scripts, shell pipelines, and agent tool calls: pipe in a state with typed questions and get typed decisions back without a full LLM workflow.

Jev Agents & MCP#community#github

Community

wnoronha/jebRust

JevApi

.NET 10 client plus MCP server for the Jev evaluation API, covering noul, choice, and score questions with typed answers, probability distributions, and confidence values.

Jev Tools & CLIs#community#github

Community

JawzoD3TH/JevApiC#

camunda-jev-ai-decision-connector

Community Camunda 8 connector that calls Jev from BPMN to pick the best option, find every match, or ask custom noul, choice, and score questions gateways can route on.

Jev Tools & CLIs#community#github

Community

rajeshponna/camunda-jev-ai-decision-connectorJava

dsh-auto-review-jev

DeepSeek Harness approval guardian fork that lets a reviewer model allow, deny, or defer tool requests via chat completion or one System One call asking decision and risk questions.

Jev Agents & MCP#community#github

Community

xlennart/dsh-auto-review-jevJavaScript

zooma-onchain-bot

Telegram-driven Solana bot that runs one autonomous trade cycle at a time, with dump-shield exits, a 5% loss cap, and JEV-based sizing, stops, and profit targets.

Jev Tools & CLIs#community#github

Community

maxchichar/zooma-onchain-botTypeScript

open-jevlike-infer

Self-hosted inference server for open Jev-like models behind POST /v1/systemone, starting with Clef-Flash on vLLM with micro-batching and Jev-compatible choice, score, and noul.

Jev Models & Reimplementations#community#github

Community

Arcobalneo/open-jevlike-inferPython

ariadne

Terminal assistant that routes natural-language requests with Jev intent classification, then uses a separate generation model via Pi for commits, reviews, shell commands, and chat.

Jev Tools & CLIs#community#github

Community

echozyr2001/ariadneTypeScript

brain-speeddial-eeg-jev

Offline prototype replaying public Shin 2017 EEG sample-by-sample to trigger intents, gate actions with a Jev policy question, and confirm via repeat or imagery before a mock agent acts.

Jev Agents & MCP#community#github

Community

AshwaniKottapalli/brain-speeddial-eeg-jevPython

jeveloper

Claude Code plugin that puts Jev judgments in the agent loop to route tool calls, verify outputs, judge completion, and pick next actions with metered calls.

Jev Agents & MCP#community#github

Community

pur4v/jeveloperPython

slopmop

Chromium extension plus self-hostable server that scores LinkedIn post text with twelve parallel Jev writing judgments, then folds or outlines suspected slop with reasons you can overrule.

Jev Tools & CLIs#community#github

Community

tomfrazier/slopmopTypeScript

opencode-smart-reasoning

OpenCode plugin that asks Jev once per prompt how much reasoning is needed, then maps minimal to xhigh effort onto the model's own variants without rewriting prompts.

Jev Agents & MCP#community#github

Community

d0nj/opencode-smart-reasoningTypeScript

dlm-jev

Jev-style local decision engine on DiffusionGemma 26B-A4B that reads one label-token slot per question in a single decoder pass to return distributions without generating text.

Jev Models & Reimplementations#community#github

Community

seongyeon1/dlm-jevPython

jev-demo

Voice-driven UI prototyper for Next.js: local whisper.cpp transcribes mic audio on the Mac, Jev answers a batch of typed Choice/Noul questions per utterance, and json-render renders the design as shadcn/ui React.

Jev Models & Reimplementations#community#github

Community

julianoczkowski/jev-demoTypeScript

jev-complete.nvim

Neovim plugin that uses Jev as a ranking oracle: buffer words appear instantly as fuzzy matches, then Jev re-ranks up to 30 candidates against surrounding code and rebuilds the menu.

Jev Tools & CLIs#community#github

Community

tibuchivn/jev-complete.nvimLua

Start here with the Jev AI model

Hand-picked entries the maintainers recommend first, from official primitives to community tools.

Jev: For the Builders AND Dreamers (Jev 1.14)

The Jev Day release post: Jev 1.14.0 under jev-preview plus three danger-zone features — composable images on both models, the box question type on 1.14 only, and opt-in 262k context.

Jev Guides & ArticlesArticle#official#release#vision

Official

Box Questions (Dreamer-Ready)

The box question type: one bounding box per question, returned as four edges that are fractions of the image, plus confidence, with no criteria field and no not-found value.

Jev Practices & PatternsDocs#official#docs#vision

Official

Jev 1.14 Day 0 Support in LiteLLM

LiteLLM's Day 0 post for TypeSafe Jev 1.14: the proxy adds box questions, image input and long-context mode on both POST /v1/systemone and POST /v1/decisions, forwarding TypeSafe-Danger-Zone headers only to TypeSafe deployments.

Jev Integrations & AdaptersArticle#community#litellm#gateway

Community

Newest Jev AI model resources

The latest additions to the directory, newest first.

From the Jev community

Watch walkthroughs, read the threads, and see what builders are posting.

Watch6Discussions6Posts9

YouTube: KodeKloud's three-minute primer: what a System One model decides, and why it answers in milliseconds.

YouTube: Caleb Writes Code explains what Jev is and how to call it, in seven minutes.

YouTube: Greg Isenberg and Ryan Vogel on the businesses Jev unlocks, and a path in through the Vercel AI Gateway.

YouTube: CJ from Syntax demos browser use, classification, code review, a model router, and a chat bot with no LLM.

YouTube: Ryan Vogel runs Jev on 100 and then 1,000 emails: category, priority, spam, and reply predictions.

YouTube: AICodeKing tests support routing, refund detection, prompt-injection resistance, and browser automation.

Hacker News: Show HN: Ad Spend Guard gates budget before the auction, not the creative after.

Show HN: Gating ad budget with a decision modelRead the thread on Hacker News

Reddit: Reranking rebooking options with a decision model, ranked with reasons.

Hacker News: Pick Verify: a single decision at the warehouse pick station catches confusable picks.

Show HN: Verifying robot picks with a decision modelRead the thread on Hacker News

Hacker News: Decision Index 0.2.1 scores open reproductions of Jev on a frozen suite.

jackbravo4 pointsDecision Index 0.2.1 – 70 open reproductions of TypeSafe Jev's Decision ModelRead the thread on Hacker News

Hacker News: Software Bombe and live Enigma demo where Jev ranks cribs and judges plaintext.

ag_212 pointsShow HN: Jev as the Bletchley Park Analyst: A Software Bombe on EnigmaRead the thread on Hacker News

Hacker News: Show HN for the decide CLI: brew install, file context, and multi-question shell scripts.

vsekhar2 pointsShow HN: Decide – Jev decisions in the shell, scripts, and agent skillsRead the thread on Hacker News

Follow @typesafeai

How entries are chosen

Every entry is reviewed against the same bar, whether it comes from TypeSafe or the community.

Public and working — no paywalls, sign-up walls, or dead links.
Concrete — it has to be about Jev and the System One API, not generic LLM content.
Useful today — something a developer can learn from or use right now.
Distinct — if a similar entry exists, the description has to say what makes this one different: a different runtime, a cheaper path, a measured result, or a narrower focus.
Documented — repos state their license, and docs are in English or carry an English summary.

Spam, affiliate links, and thin AI-generated content are rejected. New entries are expected to ship with a deep dive: two to five highlights, caveats, a quickstart snippet where one helps, and a verification date. Star counts are refreshed when an entry is touched.

Common questions

Short answers about Jev and how this directory works.

What is the Jev AI model?

Jev is TypeSafe AI's first System One model — an AI model that takes a state plus typed questions and returns one structured answer per question: a choice, an ordered score, or the probability of yes, with calibrated confidence on Choice and Score answers. Code can branch on the result without parsing generated text.

What is the difference between Choice, Score, and Noul?

They are the three question primitives. Choice picks one of up to 255 options, Score rates on 2 to 10 ordered levels, and Noul answers yes or no. Choice and Score answers carry a confidence between 0 and 1; a Noul answer is the probability of yes.

Which Jev SDKs and client libraries are available?

TypeSafe maintains official JavaScript/TypeScript and Python SDKs plus a Python adapter. The community has built clients for Go, .NET, PHP, Laravel, Rust, Elixir, Ruby, and Scala, along with framework integrations such as DSPy, LlamaIndex, and Home Assistant. All of them are listed in the Repos & SDKs category.

Is the directory free, and is it affiliated with TypeSafe AI?

The directory is free to browse: every entry is reviewed, and spam, affiliate links, and sign-up walls are rejected. JevDirectory.org is community-run and not affiliated with TypeSafe AI — Jev and System One are TypeSafe AI trademarks.

How often is the directory updated?

Entries are added as new resources appear and re-checked when they are touched. The directory currently holds 3919 entries from 293 source sites, last updated Nov 6, 2026.

What is a verified deep dive?

Most entries include a deep dive: two to five highlight bullets someone would only know from using the resource, a caveats note about limits and requirements, an optional quickstart snippet, and the date the link was last checked. 3919 of the 3919 entries carry one today.

For the canonical details, read the official TypeSafe docs and the API reference.