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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 625–672 of 3919 resources

azir-dispatch
3GitHub stars
A tool for developers coordinating coding agents in herdr: JEV, a decision model served by OpenRouter, selects the agent, model and reasoning effort for each task, while a live terminal board tracks every dispatch, completion and hand-off.
Jev Tools & CLIs#community#github#routing
Communityjosssphzhou/azir-dispatchJavaScript
Jev Skill Router
3GitHub stars
A Rust MCP server that recommends third-party agent skills: it retrieves deduplicated metadata with SQLite FTS5/BM25, sends one comparable typed Score per candidate in batches of at most 128 questions, and never installs or executes a skill.
Jev Agents & MCP#community#github#mcp
Communityking4s/jev-skill-routerPython
Jev Agent Control
3GitHub stars
An OpenCode V2 server plugin that uses Jev to route requests between the Plan, Build and your own primary agents, and hand off unfinished work at completed execution boundaries while following each target agent's configured model.
Jev Integrations & Adapters#community#github#typescript
Communitykrzysztof-cieslak/jev-agent-controlTypeScript
JEV Research MCP
3GitHub stars
A self-hosted MCP server that uses TypeSafe JEV as a semantic evidence-selection layer for coding-agent web research: it filters search results before fetching and parsed content blocks afterward, returning compact evidence blocks with provenance.
Jev Agents & MCP#community#github#mcp
Communitymerth1470/jev-research-mcpPython
Jev Paper Trader
3GitHub stars
An experiment that paper trades real Polymarket and Kalshi markets with a fake $100,000 bankroll, using TypeSafe's Jev as the judge of forecasts fed by Claude research; after about two weeks it reported being less accurate than the market's own price.
Jev Demos & Experiments#community#github#python
Communitymojoai-king/jev-paper-traderPython
Chirp
3GitHub stars
A Tern plugin that gives coding-agent notifications a tiny robot voice: Jev reads the end of the agent's last message and answers six typed questions, including mood and pitch, that a pure-Luau synthesizer turns into a short beep.
Jev Integrations & Adapters#community#github#luau
Communitynoctivoro/tern-chirpLuau
RAG powered by Jev
3GitHub stars
A beginner-friendly RAG app that answers questions about your documents using only what is written there: rag.py finds the right chunks, asks Jev to check them and gets the answer from OpenAI, while a Streamlit page shows the result with Jev's scores.
Jev Demos & Experiments#community#github#python
Communitythirumurugan240/rag_with_jev_aiPython
jev-factory
3GitHub stars
A pipeline that turns nvsh's Tool-Jev fine-tune process into a reusable factory for building jev-like models, with knobs and per-run decision tools, then fine-tunes its own model to make those decisions; the first model is not yet trained.
Jev Repos & SDKs#community#github#python
Communityagentculture/jev-factoryPython
jev-qa-analyzer
3GitHub stars
Two Jev demos over SprintPulse QA data: one scores release risk with a 10-level rubric evaluated against a reference score, the other diagnoses the main risk cause with a 9-label choice question, both sending the same per-ticket signals to Jev's System One API.
Jev Demos & Experiments#community#github#python
Communityavi350751/jev-qa-analyzerPython
jevkit
3GitHub stars
An unofficial Go CLI that puts Jev in a coding agent's toolbox: the agent can ask where an answer lives and read only those lines, or hand Jev a yes/no or multiple-choice call and get a calibrated verdict tuned to the cost of a wrong call.
Jev Tools & CLIs#community#github#go
Communitybragamat/jevkitGo
JEVsnap
3GitHub stars
A screenshot hotkey redactor for macOS, Linux and Windows that blacks out API keys, tokens, emails, phone numbers, names, internal hostnames and QR codes before the image reaches the clipboard; optional AI checks use the TypeSafe Jev API.
Jev Tools & CLIs#community#github#security
Communitybrainstormity/jevsnapTypeScript
Jev Factorio Agent
4GitHub stars
An experimental Factorio agent in which Jev chooses goals and actions as typed questions while deterministic code owns the game rules and actuation; an offline mock loop runs with no API key and no game copy, with live and hierarchical modes documented.
Jev Agents & MCP#community#github#python
Communitycompletedottech/jev-factorio-agentPython
astrbot_plugin_jev
3GitHub stars
A fork of astrbot_plugin_group_chat_plus that adds Alibaba Cloud's System One Jev decision model after the original random probability gate, reviewing whether the bot should interject, with per-group rate limiting and degradation protection.
Jev Integrations & Adapters#community#github#python
Communityczyczy23/astrbot_plugin_jevPython
jev-router
3GitHub stars
A Claude Code plugin that picks Haiku, Sonnet or Opus and a reasoning effort for every prompt, step and subagent, with an effort cap, a prompt-cache guard and a status band; the repo is named jev-router and tagged typesafe.
Jev Integrations & Adapters#community#github#typescript
Communitydominicrico/jev-routerTypeScript
Pi Jev Reply
3GitHub stars
A Pi terminal extension that gives replies a finishing pass: a Jev review with an optional plain-language rewrite and compact visual, falling back to your current Pi model when no Jev key is set, and keeping the original reply if an edit fails.
Jev Tools & CLIs#community#github#pi
Communityeachann1024/pi-jev-replyHTML
Decision Arena
3GitHub stars
A real-time 3D runner game where up to six decision models race each other: each model answers one move at a time at its own speed while the world keeps moving, and the last runner standing wins.
Jev Demos & Experiments#community#github#javascript
Communityeandualem/decision-arenaJavaScript
README Clew 2
3GitHub stars
A Chrome extension and web page that checks whether a public JavaScript or TypeScript repo's README matches its code: rules and five deterministic verifiers decide what is true, Jev labels README lines with calibrated confidence, and Haiku explains the findings.
Jev Tools & CLIs#community#github#javascript
Communityearlgreyhot1701d/readme-clew-2JavaScript
JEV Attack Surface Analysis
3GitHub stars
A proof-of-concept Python scanner that maps a backend codebase's attack surface and ranks likely vulnerabilities down to the suspicious line, using Jev as the classifier for about one cent per repo. It reads Python, JavaScript and TypeScript, and a demo site shows read-only results on PyGoat and NodeGoat.
Jev Tools & CLIs#community#github#security
Communityfranciscocarloserra/jev-attack-surface-analysisPython
Getting started with Discriminative (Jev/DiffusionGemma) models
3GitHub stars
A one-hour, six-step workshop built around a fighting game that teaches TypeSafe's Discriminative (Jev) decision model and puts it next to Gemini in a Google ADK workflow. It runs in Cloud Shell or anywhere signed into gcloud, with hosted Jev, a local DiffusionGemma VM, or a rehearsal stand-in.
Jev Guides & Articles#community#github#workshop
Communitygca-americas/discriminative-models-workshopJavaScript
jev-effort
3GitHub stars
A Claude Code mod that sends each prompt to Jev through OpenRouter and turns the returned 0-3 score into a reasoning effort level, from low to xhigh. Shadow mode is on by default, so it only logs what it would set until you turn it off.
Jev Integrations & Adapters#community#github#claude-code
Communitygebeer/jev-effortTypeScript
skill-router
3GitHub stars
A Claude Code mod that asks Jev one Noul question per skill for every prompt, ranks the skills above the threshold and passes them to the model as a suggestion. It never loads a skill itself, and a timeout, outage or missing key only skips the routing.
Jev Integrations & Adapters#community#github#claude-code
Communitygecm0/skill-router-modTypeScript
jev-ios-bridge
3GitHub stars
A bridge and Claude Code plugin that runs scripts of taps, typing and swipes on iOS simulators or Android devices and has Jev judge each checkpoint's screen text, returning passed, failed or inconclusive with screenshots and a log. Saved scripts rerun from the terminal with no Claude in the loop.
Jev Integrations & Adapters#community#github#ios
Communityhugues-vnsgn/jev-ios-bridgeTypeScript
Jev.aitools.fyi (Jev Directory)
3GitHub stars
A curated public directory of the TypeSafe Jev (System One) ecosystem: SDKs, integrations, agent tooling, demos, games, benchmarks and guides. The Astro 5 site deploys to Cloudflare Pages and ships agent-friendly endpoints such as llms.txt, an OpenAPI file, a sitemap and a publisher manifest.
Jev Tools & CLIs#community#github#directory
Communityimrishit98/jev.aitools.fyiTypeScript
Mochi
3GitHub stars
A free, local-first macOS file organizer that sorts Downloads, Desktop and chosen folders with deterministic rules, review-before-move, crash recovery and undo. Optional AI, including a direct TypeSafe Jev decision adapter for closed-set classification, can suggest destinations but never touches the filesystem.
Jev Tools & CLIs#community#github#macos
Communityjerrysun-ofive/mochiSwift
dsh-set-model
3GitHub stars
A DeepSeek Harness plugin that lets the agent switch model presets and thinking depth on its own, either with the set_model and switch_preset tools or through Jev, which reads each turn's instruction and picks a tier. Jev auto-switching is a separate switch, off by default.
Jev Integrations & Adapters#community#github#deepseek
Communityjohn-walks-slow/dsh-set-modelTypeScript
jev-testing
3GitHub stars
A small SeleniumBase project that sends a page's reduced HTML to Jev and gets back three structured answers: whether a CAPTCHA is present, a 0-100 confidence score and which of six types it is. The README warns scores vary between runs and are not calibrated probabilities.
Jev Demos & Experiments#community#github#captcha
Communitymdmintz/jev-testingPython
Decision Blackjack
3GitHub stars
A benchmarking studio and real-time simulator that pits Jev (remote TypeSafe System One), a local Laya model and the optimal blackjack Basic Strategy against each other on identical deterministic shoes. It scores every deviation turn by turn and runs headless batches of up to 100,000 rounds.
Jev Benchmarks & Evaluations#community#github#blackjack
Communitymrbanana55/decision_blackjackPython
Intelliwright
3GitHub stars
A Playwright-based end-to-end test runner for web apps where Jev powers plain-English assertions, actions by description, goal-driven runs and failure triage. Its API mirrors Playwright Test, with test, expect, fixtures and page objects, and every Jev feature is optional.
Jev Tools & CLIs#community#github#testing
Communityneeraj719714/intelliwrightTypeScript
ex-regex
3GitHub stars
A Python library shaped like the re module that finds, replaces, splits and extracts text by meaning: loose finders propose spans and Jev judges each one with a probability. Every match stays a verbatim slice of the input with its offsets, so it can be wrong but never invented.
Jev Repos & SDKs#community#github#python
Communitynothans/ex-regexPython
TypeSafe for Rust
3GitHub stars
An unofficial Rust client for TypeSafe's System One API behind Jev: typed Noul, Choice, Score and Box questions, images, and both async and blocking clients. Its behaviour follows the official Python SDK, with the same environment variables, retry policy and error kinds.
Jev Repos & SDKs#community#github#rust
Communityphiat/typesafe-rust-sdkRust
Olympus
3GitHub stars
An agent skill for software decisions: independent proposals, blind position-swapped judging, falsifiable debate, an owner gate, then verified delivery with two independent reviews. Jev is optional and ships as a verdict meta-check in shadow mode, off by default.
Jev Agents & MCP#community#github#agents
Communitypirrongelli/olympusPython
could-jev
3GitHub stars
A Claude skill that gives a quick design gut-check on whether Jev could help with what you are building, returning a short verdict, pattern, sketch, caveats and a cheapest test. It does not call Jev itself; it ships pattern and capability notes refreshed by a monthly sweep.
Jev Agents & MCP#community#github#claude
Communityrlfordon/could-jev
reasoning-router
3GitHub stars
A router that asks a classifier, Jev by default, how much reasoning each step of a coding session needs, then adds that effort to the model request without breaking the prompt cache. It ships as an OpenCode plugin, a Pi extension and a local proxy for Codex CLI.
Jev Integrations & Adapters#community#github#routing
Communityrobertn702/reasoning-routerTypeScript
JEV WiFi Analyzer
3GitHub stars
A 2.4 GHz WiFi site-survey instrument built on a ZimaBoard 2 and an Alfa USB adapter: Python and Scapy turn captured 802.11 frames into structured RF telemetry, and Jev reads each measurement window through OpenRouter to return coverage, congestion and optimization decisions.
Jev Tools & CLIs#community#github#wifi
Communityronibandini/jevwifianalyzer-Python
jev-max
3GitHub stars
A Jev browser agent that breaks the three walls of shadow DOM, iframes and canvas: a piercing snapshot, vision-grounded fallback clicks, uploads, drag-and-drop and multi-tab, all driven by one Jev request per cycle. It ships as a Python library and an MCP server.
Jev Agents & MCP#community#github#browser
Communitysaloni-garg/jev-maxPython
Reddit Content Opportunity Finder
3GitHub stars
A two-stage Python framework that cleans an Apify Reddit export, clusters comments with UMAP and HDBSCAN, then has Jev score each comment 0-1 for whether the brand could publish new content about it. Opportunities are flagged when the score clears 0.8 and no competitor is mentioned.
Jev Tools & CLIs#community#github#reddit
Communitysimodepth96/reddit-content-opportunity-finderPython
decision-cascade
3GitHub stars
An open-source, locally executed decision engine in the spirit of Jev (TypeSafe AI): state becomes features, and Noul, Choice and Score heads return typed, calibrated probabilities without generating text. It ships a cheap-to-strong cascade and a full train-calibrate-evaluate-deploy cycle.
Jev Repos & SDKs#community#github#python
Communityslavabars/decision-cascadePython
Kafka Jev Connector
3GitHub stars
A Kafka Connect sink connector that sends each input record to TypeSafe AI's Jev with questions you define, then publishes an Enriched Record holding the original message, Jev's answers and the evidence to trace and deduplicate each evaluation.
Jev Integrations & Adapters#community#github#kafka
Communitysmatiolids/kafka-jev-connectorJava
Jev on SMAC
3GitHub stars
A four-step experiment asking whether Jev, a fast model that picks among named options, can act as the policy in StarCraft multi-agent micro (SMAC), comparing every step against baselines that had the same information but no Jev.
Jev Benchmarks & Evaluations#community#github#benchmark
Communitywang90063/jev-on-smacPython
Frame
4GitHub stars
A Next.js visual reference app for AI filmmakers, powered by Jev: describe a story and explore the filmmakers, colors, lighting and compositions that could bring it to life, drawn from 24 director profiles, 47 films and 282 image references.
Jev Tools & CLIs#community#github#nextjs
Communityxwen111/frame-jevTypeScript
reflex-cu
2GitHub stars
An open-source computer-use MCP server for Claude Code, Codex and other agents that reads the accessibility tree instead of screenshotting every step, using Jev as a fast judge and, experimentally, as image input to spot icons and game objects.
Jev Agents & MCP#community#github#mcp
Community8itlab/reflex-cuPython
Building with Decision Models
2GitHub stars
An unofficial skill for coding agents about building with decision models such as Jev, Clef, pplx-decider, ai_decide and Ollama, covering typed decisions, calibrated confidence, provider differences and 450+ linked projects sorted by implementation shape.
Jev Agents & MCP#community#github#skill
Communityaaddrick/building-with-decision-modelsPython
jev-samples
2GitHub stars
Runnable samples for Jev, TypeSafe AI's System One model: each sample sends state plus questions that carry their own answer options and then branches on the typed value returned, including a README checker and an AGENTS.md readiness scorer.
Jev Cookbooks#community#github#samples
Communityaarora79/jev-samples
snapdec
2GitHub stars
A local System One decision layer for AI coding agents, shipped as an MCP server and Agent Skill, that offloads high-volume classification, checks, scores and ranking from frontier LLMs to sub-50ms local models with calibrated output.
Jev Agents & MCP#community#github#mcp
Communityaktonay/snapdecPython
Jeffort
2GitHub stars
A Claude Code mod that scores each prompt with TypeSafe Jev and sets Claude's effort level for that turn, mapping four narrow questions, reasoning depth, scope, stakes and ambiguity, onto an effort level without ever touching the model.
Jev Tools & CLIs#community#github#claude-code
Communityandrewstephenson-v1/jeffortTypeScript
JEVals
2GitHub stars
A self-contained playground for evaluating structured judgment requests against LLM providers: validate a SystemOneRequest, run it through an emulator, a JEV baseline via typesafe.ai and an OpenAI-compatible judge, then compare results on three web screens.
Jev Benchmarks & Evaluations#community#github#benchmark
Communityduberblock/jevalsTypeScript
System One plugin for CLIProxyAPI
2GitHub stars
A CLIProxyAPI plugin that routes System One decision requests to any compatible node, a local model server such as Winnow 12B or hosted lanes like OpenCode, OpenRouter and v1m, chosen by model prefix, with a management UI.
Jev Integrations & Adapters#community#github#gateway
Communityducdao98z/cpa-plugin-systemoneGo
nu_plugin_jev
2GitHub stars
A Nushell plugin that brings TypeSafe Jev structured decisions into the shell: Nu builds the state and processes the typed answers, the plugin sends the request, and native commands like where and sort-by handle the rows.
Jev Tools & CLIs#community#github#nushell
Communitygleb-chipiga/nu_plugin_jevRust

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.