Skip to content
JevDirectory.orgTraffic count unavailable. View site traffic

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

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 577–624 of 3919 resources

Codex Route Advisor
6GitHub stars
A skill for Codex agents that splits development work into Bounded Tasks and produces a Dispatch Plan recommending a model, reasoning effort and tools per task, with optional Jev-powered assessment and an Agent fallback when Jev is unavailable or low-confidence. MIT-licensed.
Jev Agents & MCP#community#github#javascript
Communitykenming/codex-route-advisorJavaScript
Reflex
6GitHub stars
A Mac menu-bar app that routes every coding agent you run in herdr from one ask bar, phone remote or edge rail: requests go to Jev via jev-fabric as typed questions over self-built candidates — which session, which folder, side question or continuation — and come back as keys and probabilities in about a second.
Jev Tools & CLIs#community#github#swift
Communitymonotykamary/reflexSwift
AI Agents Masterclass mods
6GitHub stars
Turkish-language companion repo to the 'AI Agents Masterclass' videos: four toggleable Claude Code plugins, including a jev mod that does classification, filtering and judging with TypeSafe Jev and ships a keyless fake mode, plus pdf, hafiza and drive mods. Disabled plugins load nothing.
Jev Agents & MCP#community#github#javascript
Communityselmakcby/ai-agents-masterclass-modsJavaScript
tinycomputer
6GitHub stars
A Rust harness for desktop and browser automation where every choice about what to press comes from Jev: the decision model answers small closed questions about the screen while plain Rust reads the screen as named buttons and fields, acts, verifies and enforces the safety rules. It stops before money moves.
Jev Agents & MCP#community#github#rust
Communitytinyhumansai/tinycomputerRust
sommelier
7GitHub stars
A Claude Code plugin that routes each request to the right model and effort — Haiku for quick lookups, Sonnet for well-specified changes, Opus for investigation or design — by asking TypeSafe Jev three questions about the request: reasoning depth, whether it starts a new task, and whether it is high-risk.
Jev Tools & CLIs#community#github#typescript
Communitywide3751/sommelierTypeScript
JevAgentHarness
9GitHub stars
A harness in which a small decision model watches every step of your coding agent: routine steps go to a cheap model, hard steps to the strong one, aiming for the same results at a fraction of the bill. Python 3.10+, MIT, alpha, with an arXiv paper and Hugging Face models under the same name.
Jev Agents & MCP#community#github#python
Communityjevagentharness/jevagentharnessPython
super-decider
5GitHub stars
Typed decisions on a fine-tuned DiffusionGemma 26B-A4B: super-decider answers choice, noul (yes/no) and score questions with calibrated distributions in one call, speaks the Jev/TypeSafe System One request format and OpenAI chat completions, and runs on one NVIDIA L40S. NVFP4 weights are 18 GB.
Jev Models & Reimplementations#community#github#python
Communitysingularity-compute/super-deciderPython
Heliotrope
5GitHub stars
A carbon-aware load scheduler that shifts deferrable electricity loads — EV charging, water heating, laundry, cooling — into the cleanest grid hours without missing a deadline. Jev classifies loads and ranks which matters first; OR-Tools CP-SAT keeps deadlines and physics hard while carbon is the objective.
Jev Tools & CLIs#community#github#python
Communitystellariex/heliotropePython
decisionkit
6GitHub stars
A provider-neutral CLI, MCP server and Claude Code plugin that asks yes/no, pick-one, rate or rank questions about text and gets probabilities instead of paragraphs. Backends include Jev (TypeSafe or via OpenRouter), OpenAI's Decisions API, and Claude with an existing Claude Code login. MIT, Node 20+.
Jev Tools & CLIs#community#github#typescript
Communityadityajha2005/decisionkitTypeScript
andy-harness
5GitHub stars
A plugin-based agent harness (FastAPI + Vue 3) bundling a chat GUI, multi-provider model access, an MCP client and marketplace, skills, workflow studio, sandboxed execution and a Tauri desktop shell. It integrates TypeSafe AI's Jev for structured Choice, Score and Noul decisions.
Jev Agents & MCP#community#github#agents
Communityandyqiuqiubo/andy-harnessTypeScript
JEV Orchestrator
5GitHub stars
A Claude Code plugin that sends every Agent spawn through JEV (TypeSafe), which picks the model (haiku, sonnet, opus), the effort and the tool profile of each subagent. It fails open to sonnet at medium effort, accepts a TypeSafe or OpenRouter key, and ships plan and run skills.
Jev Agents & MCP#community#github#claude-code
Communityhiyoku/jev-orcTypeScript
Jevector
5GitHub stars
A Python toolkit that encodes profile criteria as 64- or 256-value decision vectors with Clef or Jev, retrieves candidates with HNSW search, then checks mandatory conditions in both directions and ranks the rest by preference coverage. A 52-profile benchmark compares the vectors against BM25 and BGE-small.
Jev Tools & CLIs#community#github#python
Communitylalalune/jevectorPython
JevAlt
5GitHub stars
Three open-weights 4B decision models for English (Deem-4B), Turkish (Karar-4B) and German (Wähler-4B) that choose between options and return a probability for each. The server implements the Jev API, POST /v1/systemone, so existing Jev clients work by changing the endpoint.
Jev Models & Reimplementations#community#github#python
Communitymertkayacs/jevaltPython
jevcraft
5GitHub stars
A mineflayer-based Minecraft bot whose decisions are made entirely by TypeSafe's Jev System One model: code lists the legal actions and Jev picks one in about 0.2 seconds for roughly 1.7 cents per bot-hour. Fifteen of 40 fresh worlds reached the Nether; none has beaten the game.
Jev Demos & Experiments#community#github#minecraft
Communitymrubens/jevcraftJavaScript
jev-job-search
5GitHub stars
A Claude Code-based job application tool that finds software internships and new-grad roles, fills application forms in a Chrome window, reads every answer back from the page and sends the forms you approve. JEV makes every fixed-answer choice for about 1 to 1.5 cents per 10 applications.
Jev Tools & CLIs#community#github#job-search
Communityqbeka/jev-job-searchTypeScript
TypeSafeSharp
5GitHub stars
An unofficial .NET client for TypeSafe AI's System One API and the Jev model, bringing official JS and Python SDK behaviour (retries, errors, key handling) to netstandard2.0 and net10.0 with typed answers, dependency injection and OpenTelemetry tracing.
Jev Repos & SDKs#community#github#csharp
Communitysanamhub/typesafe-dotnetC#
Emc²
5GitHub stars
An installable Electron email client for Windows, with a macOS build target, that sorts mail with Jev: one call per message classifies it into Important and Other and rates relevance. TypeSafe, Vercel AI Gateway and OpenRouter endpoints all serve Jev; local sorting works without any key.
Jev Tools & CLIs#community#github#email
Communityscreen-devs/aggregate-mailTypeScript
jev-box-tracking
5GitHub stars
A Python library and CLI that tracks objects in real time by combining TypeSafe Jev Box questions with sparse optical flow and a Kalman filter. Jev supplies absolute positions, flow updates velocity every frame, and a history buffer rewinds the filter to the frame each answer describes.
Jev Repos & SDKs#community#github#python
CommunityBenCaunt/jev-box-trackingPython
Agent Guardrail
4GitHub stars
A safety guardrail for coding agents (Claude Code, Codex, Cursor, Antigravity, Grok) that intercepts shell commands, script executions and file writes before they run. Its neural tier can use Liquid AI d1-3B, CLM, TypeSafe Jev cloud or pure rules; a deterministic tier blocks destructive patterns in under 0.1 ms.
Jev Tools & CLIs#community#github#security
CommunityBl4ckk01/agent-guardrailPython
Canopy-Jev 27B
4GitHub stars
An open decision model built on frozen Qwen3.8-27B that processes a shared application state with isolated question branches and returns probabilities with zero generated answer tokens. It reports 87.45% on JevBench, exceeding Open-Jev-27B-v1.1 by 2.16 points, and needs 64 GiB of free GPU memory.
Jev Models & Reimplementations#community#github#python
CommunityCamellia86/Canopy-JevPython
Jev solver
4GitHub stars
A Rust library and CLI that solves reCAPTCHA v2 image grids by asking Jev one Noul question per tile. Jev judges each tile in a single multipart request; Rust handles cropping, clicks, replacement detection, verification and stopping conditions, with a Chrome workflow that manages its own ChromeDriver.
Jev Tools & CLIs#community#github#rust
CommunityDevExzh/jev-solverRust
question-kit
4GitHub stars
A TypeScript-first toolkit billed as the standard library for System One models: ready-made classify, extract, pickOne, rank and verify methods, a service-agent runtime that runs conversations turn by turn, and a one-message order parser. A Python port is in preview and the project is in alpha.
Jev Repos & SDKs#community#github#typescript
CommunityEngid/question-kitTypeScript
Slop Scope
4GitHub stars
A local Node app that asks whether an image is AI-generated: the browser measures 16 windows and a lens-fringe field and runs a bundled CLIP ViT-B/16 detector, then sends only a fixed fact dossier to JEV through OpenRouter for a verdict of likely_ai, likely_real or uncertain.
Jev Tools & CLIs#community#github#javascript
CommunityGPTchatly/slop-scopeJavaScript
JEV AgentNetwork
4GitHub stars
An event-driven multi-agent network where JEV observes live state and assigns pending work to available agents. Its AgentRouter reference implementation routes on every completion event instead of waiting for a round to end, while general-purpose agents with OpenAI Responses API tools execute work concurrently.
Jev Agents & MCP#community#github#agents
CommunityKelly-Leeee/AgentNetwork-jevPython
Jev Soundboard
4GitHub stars
A Python sidekick that listens to a call (FaceTime, Zoom, Discord or a stream) and fires a soundboard clip when Jev thinks the moment is funny. Jev answers two questions per 1.2-second audio slice, a Noul for react-now and a Choice for which clip, at about $0.30-0.40 per hour of chatter.
Jev Tools & CLIs#community#github#python
CommunityKiggsworthy/jev-soundboardPython
GenClass
4GitHub stars
A 32M-parameter typed-decision model plus a Chrome extension that runs entirely on-device with WebGPU/WASM and Moonshine speech recognition. Its local server speaks POST /v1/systemone, so existing Jev clients work by changing the base URL; a benchmark table claims zero option-order flips.
Jev Tools & CLIs#community#github#chrome-extension
CommunityMeharPro/GenClassPython
JEV Find
4GitHub stars
An unofficial Chromium extension that adds a find-in-page bar: literal matches highlight instantly and locally, and with your own TypeSafe API key Jev also finds passages by meaning after you pause typing. Uncertain results never auto-scroll, and paid searches start only while you are in the bar.
Jev Tools & CLIs#community#github#chrome-extension
CommunitySzewowsky/jev-findJavaScript
Jev Guardrail
4GitHub stars
An LLM-agnostic guardrail API built on Jev: it checks prompts and responses against YAML policies and returns PASSED, BLOCKED or FAILED. It sits between your app and any LLM provider, so guardrail decisions do not depend on the provider you call.
Jev Integrations & Adapters#community#github#guardrails
Communityalpkeskin/jev-guardrailGo
pi-reply-guard
4GitHub stars
A Pi extension that checks each agent reply against a list of skills: a classifier model, Jev by default, scores adherence from 0 to 1, and when a reply does not adhere the agent is prompted to edit it until it does.
Jev Agents & MCP#community#github#pi
Communityamalavet/pi-reply-guardTypeScript
Onion or Not
9GitHub stars
A small Python app that asks whether a headline is Onion-style satire or real news. Jev runs through TypeSafe's API with your own key and is compared side by side with AnyJev L0 and raw Qwen3-8B running locally, with an option to swap the answer order.
Jev Demos & Experiments#community#github#python
Communityandrisgauracs/onion-or-notPython
brojev
4GitHub stars
A fast browser agent plugin for Claude Code written in Go: it drives Chrome through its own raw DevTools Protocol engine with no Playwright, and TypeSafe's Jev, reached through OpenRouter, picks each operation and target in a single request.
Jev Agents & MCP#community#github#browser
Communitybarockok/brojevGo
protoc-gen-jev
4GitHub stars
An experimental Buf protoc plugin that turns Protocol Buffer schemas defining questions, rubrics and thresholds into type-safe Jev client code for Go, TypeScript and Python, replacing loose text prompts and untyped JSON parsing.
Jev Tools & CLIs#community#github#protobuf
Communitybufbuild/protoc-gen-jevGo
Scientific Decision Evaluation
4GitHub stars
Code and data for evaluating Jev, a System One model, on scientific decisions and how its choices affect downstream results. The S2 collection has 20 groups, 40 scientific Choices and one engineering Choice, scored by deterministic downstream code.
Jev Benchmarks & Evaluations#community#github#benchmark
Communitybydeng01/scientific-decision-evalPython
Jev Account Filter
4GitHub stars
A tool for screening video-platform accounts with decision models, aimed at dataset collection: find relevant sources, then build a domain dataset from them. The README subtitles it decision models for video-platform account screening and links installation, commands and configuration docs.
Jev Tools & CLIs#community#github#dataset
Communitycaiweihan/jev-account-filterHTML
jev-auto
4GitHub stars
An auto-mode safety monitor for the Pi coding agent: every tool call Pi is about to run gets one System One classifier question per rule, then allow, block or ask is decided in code. Built with DSPy against TypeSafe's Jev and exported to a Pi extension calling lunaroute/djev by default.
Jev Agents & MCP#community#github#pi
Communitydbreunig/lunaroute-systemone-autoHTML
pi-mast-steer
4GitHub stars
A Pi extension that watches a coding agent's transcript for five common failure modes, including loops, drift and broken requirements, and nudges the agent when it sees one. TypeSafe's Jev, a classifier model, judges the transcript rather than an LLM.
Jev Agents & MCP#community#github#pi
Communitydbreunig/pi-mast-steerTypeScript
Customer-Support-Triage-with-Jev
4GitHub stars
A Python repository whose name and README heading promise customer support triage built with Jev. As of 2026-10-17 the repository has only a title README, but it is notable for its 6 forks against 4 stars.
Jev Demos & Experiments#community#github#python
Communityentbappy/Customer-Support-Triage-with-JevPython
jev-mcp-router
4GitHub stars
An MCP gateway that routes tool selection through Jev: for each request, Jev answers one yes/no question per server and per tool, and the LLM only sees the tools that passed. The repo's benchmark covers 649 tools at 1/32 of a comparable routing cost.
Jev Integrations & Adapters#community#github#mcp
Communityini8labs/jev-mcp-routerPython
Jev plays Factorio
4GitHub stars
A Python experiment that lets TypeSafe's Jev play Factorio from screenshots alone: each tick the vision model looks at the screen, decides, and presses keys or moves the mouse, aiming to craft 10 automation science packs from a fresh freeplay game.
Jev Demos & Experiments#community#github#factorio
Communitykgaspard/jev-factorioPython
JevImpact
4GitHub stars
A Python script that scores an AI agent's documented security finding with TypeSafe's Jev model, returning JSON with is_vulnerability, impactful and an impact_score from 0 to 1. It accepts structured JSON or a full text or Markdown report and can be imported by another agent.
Jev Tools & CLIs#community#github#security
Communitymhaskar/JevImpactPython
jev-shorts-editor
4GitHub stars
A skill that turns a talking-head video into a finished 1080x1920 vertical short with one command: it cuts retakes and dead air, reframes the speaker and adds animated captions, graphic cards, zooms, transitions and sound effects. Every edit decision is a Jev call.
Jev Agents & MCP#community#github#video
Communitymisbahsy/jev-shorts-editorTypeScript
Ollama (nace-ai fork)
5GitHub stars
A fork of Ollama that adds POST /v1/systemone: the endpoint is forwarded to a custom llama-server from nace-ai/llama.cpp on the edlm branch, which serves Drex DLM. The fork is MIT licensed and Go-based like upstream Ollama.
Jev Integrations & Adapters#community#github#ollama
Communitynace-ai/ollamaGo
mario-decisions-agent
4GitHub stars
A Super Mario Bros agent whose only brain is a remote vision model on the other side of an API: screenshots in, button out, and no memory peeking. It runs on the OpenAI Decisions API by default and supports TypeSafe's Jev (jev-preview) as an alternative.
Jev Demos & Experiments#community#github#mario
Communityparjanyaacoder/mario-decisions-agentPython
Routapse
4GitHub stars
An open-source LLM router: a small router model, Laya or Jev, reads each prompt and decides which LLM, specialist agent or direct answer it gets, then serves everything through one OpenAI-compatible endpoint. Routing rules are described in plain language in a GUI.
Jev Integrations & Adapters#community#github#llm-router
Communitypooyaphoenix/RoutapsePython
Decision Models Lab
4GitHub stars
A learning lab for decision models: TypeSafe Jev and Microsoft Decision-1 route support tickets in under a second for about $0.02 per 1,000 calls, while Claude handles the hard cases. It ships an interactive site, a benchmark, calibration tests and docs.
Jev Demos & Experiments#community#github#benchmark
Communityshashikantdev3/decision-models-labTypeScript
Jev Vision for Self-driving
4GitHub stars
A demo that applies Jev box-type questions to traffic footage from Jakarta one frame in four: Jev finds cars, motorcycles and buses, a local tracker fills the other frames, and the app overlays boxes with latency, cost and detection counts.
Jev Demos & Experiments#community#github#vision
CommunityAmr-devman/jev-self-driving-vision-demoPython
astrbot-plugin-jev
3GitHub stars
An AstrBot plugin that asks a decision model whether the bot should speak at all: it screens wake-word and ordinary group messages before interjecting, then re-checks each drafted reply before it is sent, without changing a word of the text.
Jev Integrations & Adapters#community#github#python
Communityba7lcy/astrbot-plugin-jevPython
nano_jev
3GitHub stars
A zero-dependency, copy-anywhere Python service that implements the quick-coarse-verdict-first idea: a deterministic lexicon plus heuristics turn text and structured questions into labels on a controlled vocabulary in micro-to-millisecond time.
Jev Repos & SDKs#community#github#python
Communityjunnyofficial/nano_jevPython

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.

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.