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 2257–2304 of 3919 resources

jev-cua

Mac menu-bar voice controller where Jev picks the next action from observed Accessibility controls and Swift executes it in an observe-decide-execute loop.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

ronadin2002/jev-cuaSwift

obsidian-llm-hub

Obsidian plugin providing multi-provider chat, vault read and write with function calling, visual workflow automation, and local vector search.

Jev Agents & MCP#community#jevbest#catalog-import

Community

takeshy/obsidian-llm-hubTypeScript

Jev-as-Policy

Self-contained MuJoCo reproduction that uses two sequential Jev Choice calls per update for manipulation intent and axis plus finger moves, with local IK and servo doing execution.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

YuanKJing/Jev-as-PolicyPython

jev-browser-skill

Standalone CLI skill that drives isolated Playwright Chromium with Jev choosing scoped in-page actions, defaulting to Vercel AI Gateway with TypeSafe as an option.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

hqman/jev-browser-skillTypeScript

jev-recall

Python memory filter that judges every stored memory against the current request with one calibrated yes/no per memory in a single Jev request, keeping everything above a threshold.

Jev Tools & CLIs#community#jevbest#catalog-import

Community

samdotmak/jev-recallTypeScript

Jev_Star

StarCraft II research repo combining Jev action selection with optional Astra plans across full-game macro control and SMAC-Hard micromanagement, with videos, replays, and a paper.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

sc2musa/Jev_StarPython

jevify

Toolkit that makes a model behind an OpenAI-compatible endpoint or running in-process answer typed choice, score, and yes/no questions from next-token probabilities in Jev API shape.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

fidecastro/jevifyPython

Astra

Self-hosted agent runtime that adds an optional Jev judgment layer to memory filtering, lesson dismissal, request classification, and skill selection, with inspectable context and execution.

Jev Integrations & Adapters#community#jevbest#catalog-import

Community

matrixorigin/AstraRust

jev-skill-suggester

Codex Skill plus stdlib-only Python CLI that recommends which installed skill to read next for a task, allowing no-skill or uncertain answers and never executing candidates.

Jev Agents & MCP#community#jevbest#catalog-import

Community

win4r/jev-skill-suggesterPython

jev-forge

164

End-to-end toolkit that synthesizes decision data, trains and calibrates candidate scorers, evaluates fixed splits, and serves Jev-compatible inference for interactive web decisions.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

zwliJay/jev-forgePython

jev-seo

655

Live SEO audit that crawls a site from one homepage URL, checks 52 rules tied to Google Search Central, and asks Jev typed questions about every page to rank fixes.

Jev Tools & CLIs#community#jevbest#catalog-import

Community

AgriciDaniel/jev-seoPython

OpenSourceJev

Local System One decision engine that turns open-weight Qwen models into typed decision endpoints via direct llama.cpp logits, with fast and accuracy profiles for consumer GPUs.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

sabeel111/OpenSourceJevPython

jev-calibrate

CLI that calibrates Jev questions against your own labels: write questions, label examples in JSONL, run check, and get a verdict per question — gate, gate-above-confidence, ranker, unusable, or too-few-examples.

Jev Practices & Patterns#community#jevbest#catalog-import

Community

smkrv/jev-calibrateTypeScript

jev-reviewer

Browser app for systematic-review extraction that opens a trial report with supplements and returns verbatim quotes with file and place, stored locally as projects holding studies.

Jev Tools & CLIs#community#jevbest#catalog-import

Community

choxos/jev-reviewerJavaScript

typed-decision-bert

Local HTTP server aiming at Jev API shape using a BERT-family encoder, working with the official SDK by swapping base URL and key while stating it is not Jev-compatible yet.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

hawkymisc/typed-decision-bertPython

open-jev

Browser-focused TypeScript library for typed decisions that runs open model reproductions on-device via Transformers.js, returning one calibrated distribution per question.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

nico-martin/open-jevTypeScript

sharp

Browser extension that filters your X timeline with a model you choose and pay for, using plain-language rules plus per-author and blocked-word controls.

Jev Tools & CLIs#community#jevbest#catalog-import

Community

tshmieldev/sharpTypeScript

openthai-systemone

Open Thai plus English decision model that answers typed choice, score, and noul questions about a state in one forward pass.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

iapp-technology/openthai-systemonePython

pi-jev-skill-picker

Pi extension that strips the full Agent Skills catalog from every request and loads only the skills a Jev ranking call judges relevant.

Jev Agents & MCP#community#jevbest#catalog-import

Community

safzanpirani/pi-jev-skill-pickerTypeScript

mojev

Local typed decision model that takes text or image state plus a runtime schema and returns probability distributions in one forward pass.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

MoLeMo-Lab/mojevPython

jevgrep

105

Behavioral code search that asks Jev to score repository fragments for a plain-language question and returns exact excerpts with paths and lines.

Jev Agents & MCP#community#jevbest#catalog-import

Community

nassim-arifette/jevgrepTypeScript

pi-codemode

Pi extension that replaces many small tool calls with one typed TypeScript execute_tools call, type-checked before running in a sandbox.

Jev Tools & CLIs#community#jevbest#catalog-import

Community

boozedog/pi-codemodeTypeScript

jev-explained

Interactive playground that teaches Jev by running real typed noul, choice, and score questions and showing the resulting probabilities.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

davila7/jev-explainedTypeScript

ai-news-aggregator

Daily AI news pipeline that gathers RSS, arXiv, and social sources with staged agents and publishes a searchable web frontend.

Jev Agents & MCP#community#jevbest#catalog-import

Community

flyryan/ai-news-aggregatorPython

Jev-Quantum

Jev-protocol random baseline that answers noul, choice, and score questions from fast pseudorandom numbers without reading the prompt.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

karminski/Jev-QuantumRust

pijev

Drop-in Jev client wrapper that averages Choice predictions across option orderings in one request for stabler probabilities.

Jev Repos & SDKs#community#jevbest#catalog-import

Community

TypeLLM/pijevPython

is-jeven

Joke JavaScript helper that asks the Jev decision model whether a number is even and resolves to a boolean.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

wobsoriano/is-jevenJavaScript

doc-router

Rust CLI that checks each PDF page for a usable text layer, extracts text pages locally, sends only the rest to an OCR model via LiteLLM, and merges a page-ordered result.

Jev Tools & CLIs#community#jevbest#catalog-import

Community

misbahsy/doc-routerRust

SmartMoney-Cub

Local-first trading journal and review harness that is read-only over markets, captures runs into frozen envelopes and evidence packs, and requires explicit human promotion before any rule returns.

Jev Tools & CLIs#community#jevbest#catalog-import

Community

myc0576/SmartMoney-CubPython

loki

Agent runtime with a terminal UI and a messaging gateway that keeps memory, self-built skills, session search, scheduling, and subagents across Telegram, Discord, Slack, WhatsApp, Signal, and CLI.

Jev Integrations & Adapters#community#jevbest#catalog-import

Community

wundercorp/lokiPython

Jev-Register-Tool

Pure-HTTP automation for the TypeSafe register, magic-link login, onboarding, and API-key creation flow, with pluggable temp-mail backends, concurrent batch runs, and key verification exports.

Jev Tools & CLIs#community#awesomejev#catalog-import

Community

2951461586/Jev-Register-ToolPython

Jevbridge

Zero-dependency Node 22 adapter that puts typed Jev decisions beside any LLM, with swappable backends, confidence gates, MCP tools, an ACP sidecar, and offline-ready recipes.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

gamesonrblx/JevbridgeTypeScript

laya-vs-jev-arena

Side-by-side game harness where Laya running locally and Jev over API answer the same typed questions for snake, kombat, runner, flappy, tetris, and human-versus-model matches.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

PromptEngineer48/laya-vs-jev-arenaJavaScript

OpenJev

Python decision client exposing Choice, Noul, and Score primitives with isolated order-invariant scoring, a deliberative flywheel that crystallizes hard cases into fast paths, and local or hybrid deployment.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

zhangcy122/OpenJevPython

dohnuts

Python toolkit plus 0.8B multimodal model that takes a message, document, or image and returns calibrated choice, yes/no, and score answers in one forward pass for local decision workloads.

Jev Tools & CLIs#community#awesomejev#catalog-import

Community

PsiACE/dohnutsPython

jev-kit

Claude Code kit that guards PreToolUse calls with a free pre-filter plus one Jev question for ambiguous cases, and adds sub-agent sizing, rechecks, search, daemon speedups, and monitoring.

Jev Demos & Experiments#community#awesomejev#catalog-import

Community

jonathanavis96/jev-kitPython

TypeSafe

SwiftPM client for the TypeSafe System One API that mirrors the official JavaScript SDK, with typed Choice, Noul, and Score questions over Codable answers.

Jev Repos & SDKs#community#jevbest#catalog-import

Community

krzyzanowskim/TypeSafeSwift

jev-judge-mcp

MCP server over stdio that gives coding agents fourteen Jev judgment tools, turning evidence plus an enumerable question into auto, review, or escalate actions from calibrated probabilities.

Jev Agents & MCP#community#jevbest#catalog-import

Community

PyModel/jev-judge-mcpPython

jev-hub

Static aggregation site and JSON dataset collecting Jev posts, demos, long-form pieces, and discussions from X with original links and author credit and no rehosted content.

Jev Guides & Articles#community#jevbest#catalog-import

Community

mizzlelover/jev-hubCSS

ulka

Local browser-agent extension where FX plans tasks and Jev picks constrained actions from observed elements, with model calls routed through Vercel AI Gateway.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

razaanstha/ulkaTypeScript

Mica-v0.1-4B

Small decision model that returns per-answer probabilities for yes/no, 2-255 choices, or 2-10 level scores in one prefill over the SystemOne format.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

akivet/Mica-v0.1-4BPython

sys1

Rust server that exposes a System One compatible API at /v1/systemone for self-hosted Laya checkpoints with token-based batching.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

alvarobartt/sys1Rust

jev-design-test

Design sampler that turns a one-line prompt into a canvas of full-page screens by asking Jev to pick among fixed shadcn layouts instead of writing code.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

bhaiG-de/jev-design-testTypeScript

laya-jev-GraphRAG

GraphRAG layer that runs a 4-phase ingest-to-answer pipeline over Neo4j, Memgraph, AGE or Kuzu using Laya or Jev decisions instead of per-hop LLM calls.

Jev Integrations & Adapters#community#jevbest#catalog-import

Community

bodepudimuneendra-netizen/laya-jev-GraphRAGPython

ST-jeved

SillyTavern extension that sends chat text to Jev sensors and fires one rule action per turn such as nudging, rerolling, editing lists, or running scripts.

Jev Integrations & Adapters#community#jevbest#catalog-import

Community

mossyfield/ST-jevedJavaScript

robodiag-harness

Terminal harness that checks ROS 2 robots with deterministic health tests, capability descriptions, SQLite history, and optional Jev evidence routing.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

YueBit/robodiag-harnessPython

arbiter

Local server for typed-decision models that answers many Jev questions in one forward pass with checkpoint routing and micro-batching.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

0xBakeer/arbiterHTML

jevclip

Video tool where Jev scores subtitle segments and code assembles a short highlights cut plus a de-watered full cut with timestamped summaries.

Jev Tools & CLIs#community#jevbest#catalog-import

Community

cclank/jevclipPython

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.