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.
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3904- Docs169
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All 3904 Jev AI model resources
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Showing 3505–3552 of 3904 resources
Qwen3.5-0.8B fine-tuned to play ten classic browser games from raw pixels: one frame in, one forward pass, one move out in 43 ms on an H200. Public weights and a browser demo make it an open, vision-only take on Jev-shaped game decisions.
Jev Repos & SDKs#community#javascript#games
Community
OmniJev/PlayJevJavaScript
OmniJev/PlayJevJavaScriptUnofficial Chrome Manifest V3 port of browser-use/jev-ultrafast: Jev picks the operation and DOM element in one request, a small text model writes typed values, and the run happens in your own tab with your logins. Ships a 17-task headless-Chromium suite.
Jev Tools & CLIs#community#typescript#chrome-extension
Community
chy4pro/jev-for-chromeTypeScript
chy4pro/jev-for-chromeTypeScriptClaude Code, Codex, and pi plugin plus MCP server and npm library that hands steps needing no text output to Jev: one batched call answers typed questions about a state, and an opt-in PreToolUse gate can only deny or ask.
Jev Tools & CLIs#community#javascript#claude-code
Community
shitianfang/jev-useJavaScript
shitianfang/jev-useJavaScriptpsql-shaped CLI and Go, TypeScript, and Python SDKs that let you write jev(), jev_prob, jev_choice, and jev_score in queries against vanilla PostgreSQL, judging the surviving rows with Jev in batches. No CREATE EXTENSION or superuser required.
Jev Tools & CLIs#community#go#postgres
Community
kylemclaren/jevqlGo
kylemclaren/jevqlGoCLI that fits a per-question confidence threshold to a target accuracy on your own labeled data, verifies it on a held-out split, estimates how much traffic still needs an LLM, and re-checks locked thresholds in CI. It publishes no Jev results of its own.
Jev Practices & Patterns#community#python#calibration
Community
abhixhek/jevcalPython
abhixhek/jevcalPythonCLI and GitHub Action that turn project-defined semantic preferences from AGENTS.md into Jev Noul or Choice checks over code changes, then map each result to an advisory or blocking outcome. Checks can be tuned on labeled diffs.
Jev Tools & CLIs#community#javascript#cli
Community
doeixd/jev-prefJavaScript
doeixd/jev-prefJavaScriptStandalone Android agent and React studio for Mobilerun, powered by Jev: Jev selects operations and observed targets, code rejects stale actions, and a CLI, execution traces, and latency measurements ship in the repo. No ADB connection required.
Jev Tools & CLIs#community#javascript#agents
Community
droidrun/mobile-jevJavaScript
droidrun/mobile-jevJavaScriptPi extension that supervises a coding agent with Jev judgments: it holds risky tool calls, checks writes against project Markdown rules, and feeds most issues back to the agent as a steer instead of interrupting you. The conscience is beta and off by default.
Jev Tools & CLIs#community#typescript#guardrails
Community
DevMortimer/pi-wardenTypeScript
DevMortimer/pi-wardenTypeScriptWXT Chrome and Firefox extension that has Jev classify nonessential page elements through TypeSafe or Vercel AI Gateway, then stores reusable local hiding rules by page template. Paid analysis is manual by default, with an optional on-visit mode.
Jev Tools & CLIs#community#typescript#chrome-extension
Community
kitze/unclutterTypeScript
kitze/unclutterTypeScriptLocal Codex Router extension that asks Jev for a model tier and thinking depth on each model call, including continuations after tools, then relays the native Responses request verbatim. Fails open on Jev errors and logs decisions locally.
Jev Tools & CLIs#community#javascript#codex
Community
0xNatoshi/jev-codex-routerJavaScript
0xNatoshi/jev-codex-routerJavaScriptLive Hyperliquid desk across five isolated wallets where each tick packages the book, tape, and position as state and Jev answers Choice questions for long/short, open/close/hold, and leverage; hold sends no order. A missing private key means a dry run.
Jev Cookbooks#community#typescript#trading
Community
aowang-ai/jev-tradeTypeScript
aowang-ai/jev-tradeTypeScriptLocal Instagram, TikTok, and LinkedIn research app where Jev makes confidence-gated typed choices over the platform and next socai operation, while deterministic Node code validates each decision and the socai CLI performs read-only browser capture.
Jev Cookbooks#community#javascript#agents
Community
socai-io/jev-socialJavaScript
socai-io/jev-socialJavaScriptExperimental Hono router that matches an incoming HTTP request to a plain-language route description: one yes/no Jev question per description is evaluated in a single call, and the first registered route above the threshold wins.
Jev Repos & SDKs#community#typescript#routing
Community
yusukebe/hono-jev-routerTypeScript
yusukebe/hono-jev-routerTypeScriptPython MCP server that exposes classify, score, check, match, and screen tools to MCP-compatible agents, returning typed judgments over a closed answer set with token usage and latency. Ships generic triage and routing question examples.
Jev Tools & CLIs#community#python#mcp
Community
blakestone-x/jev-mcpPython
blakestone-x/jev-mcpPythonAgent-ergonomic CLI following the AXI conventions that gives coding agents Jev judgments for blocking risky tool calls, screening fetched content for prompt injection, triaging logs, flagging risky diffs, and ranking many items. Routine commands are decided locally at no cost.
Jev Tools & CLIs#community#typescript#cli
Community
shiftynick/jev-axiTypeScript
shiftynick/jev-axiTypeScriptReranking benchmark that gave Jev, Cohere Rerank 4 Pro, ZeroEntropy zerank-2, and DeepSeek the same thirty BM25 candidates across eight English datasets, publishing saved responses, scoring code, and paired-bootstrap intervals. Jev's rubric scored 0.692 nDCG@10 against Cohere Pro's 0.691.
Jev Practices & Patterns#community#python#search
Community
anessbelbati/jev-rerank-benchPython
anessbelbati/jev-rerank-benchPythonUnofficial LlamaIndex reranker and router built on the official Python SDK: JevRerank scores retrieved passages and JevSingleSelector chooses which tool handles a query.
Jev Repos & SDKs#community#python#sdk
Community
WiktorB2004/llama-index-jevPython
WiktorB2004/llama-index-jevPythonA macOS computer-use loop that OCRs the screen, asks Jev for the next action with typed Choices, and clicks, at about $0.0002 per decision without sending screenshots to a frontier model.
Jev Tools & CLIs#community#python#agents
Community
awlevin/typesafe-computer-usePython
awlevin/typesafe-computer-usePythonA reproduction of Jev that turns any Qwen checkpoint into a decision model serving the same /v1/systemone schema (Choice, Score, Noul), with no training and no generated answer text.
Jev Repos & SDKs#community#python#open-models
Community
zhengxuyu/litjevPython
zhengxuyu/litjevPythonAn experimental Sutro CLI that evaluates CSV, Parquet, and JSONL data with Jev, asks you to label ambiguous and random audit rows, and uses GEPA to propose improved function definitions.
Jev Tools & CLIs#community#python#cli
Community
sutro-sh/jev-alignPython
sutro-sh/jev-alignPythonA personal-assistant agent with 100 mocked tools that measures how many steps a task takes when the LLM picks the tool versus when Jev picks it before every model step.
Jev Practices & Patterns#community#typescript#agents
Community
vinilana/jev-eval-agentHTML
vinilana/jev-eval-agentHTMLA Manifest V3 Chrome extension that finds ad-shaped DOM elements and asks Jev, one noul question per candidate, whether each is a paid advertisement; hits above the threshold are removed.
Jev Cookbooks#community#javascript#chrome-extension
Community
realZachi/typesafe-adblockJavaScript
realZachi/typesafe-adblockJavaScriptA Bun CLI that searches a codebase with an ensemble of walkers: Jev scores file and folder names, more likely paths get more walkers, and the table shows where the walkers ended.
Jev Tools & CLIs#community#typescript#cli
Community
ellipsis-dev/blinkTypeScript
ellipsis-dev/blinkTypeScriptAn Elixir client that treats Jev as a peer GenServer: you reply with questions and its typed answers arrive as messages you pattern-match, with network-free tests.
Jev Repos & SDKs#community#elixir#sdk
Community
dannote/jevElixir
dannote/jevElixirA Rust CLI and PyO3 library that streams JSONL and Parquet rows through Jev Noul and Score rubrics, writing clean and rejected records to disk without rewriting content.
Jev Tools & CLIs#community#rust#cli
Community
AkashPriyadarshii/jev-curateRust
AkashPriyadarshii/jev-curateRustA Node CLI that sends source, configuration, build, and CI files to Jev and reports suspicious files and lines with probabilities, as a second opinion before running unfamiliar code.
Jev Tools & CLIs#community#typescript#cli
Community
luantak/is-maliciousTypeScript
luantak/is-maliciousTypeScriptA security hook for coding agents that asks Jev three typed questions before every tool call and scans tool results for prompt injection, with adapters for Claude Code, Codex, Copilot CLI, Gemini CLI, Cursor, pi, OpenCode and ACP.
Jev Tools & CLIs#community#javascript#agents
Community
leepokai/jev-guardJavaScript
leepokai/jev-guardJavaScriptA CLI that grades markdown and text files against plain-Markdown rulesets with Jev, running every rule against every line in parallel and caching unchanged lines to avoid repeat API calls.
Jev Tools & CLIs#community#typescript#cli
Community
lukstei/slop-graderTypeScript
lukstei/slop-graderTypeScriptAn agent skill for deciding where typed judgments belong beside code, policy, and generation, with Jev examples for question design and abstention plus an offline probability and threshold evaluator.
Jev Tools & CLIs#community#skills#agents
Community
24601/AugustusPython
24601/AugustusPythonA TypeScript library that walks a taxonomy and calls Jev once per level, so a choice can cover thousands of leaves despite Jev's 255-option limit per question.
Jev Repos & SDKs#community#typescript#sdk
Community
reachjalil/jev-treeTypeScript
reachjalil/jev-treeTypeScriptA small demo app that fetches a URL, turns the page into clean Markdown, and asks Jev ten bounded Choice questions about what a first-time visitor is likely to understand.
Jev Cookbooks#community#typescript#demo
Blind security benchmarks for Jev on public corpora: 662 prompt-injection messages and 200 matched vulnerable-code pairs, with raw per-sample results and a TUI dashboard.
Jev Practices & Patterns#community#go#benchmarks
Community
Gaurav-Gosain/jev-sec-benchGo
Gaurav-Gosain/jev-sec-benchGoAn unofficial Laravel integration for the PHP TypeSafe SDK that keeps typed DTOs and promises while adding package discovery, scoped lazy DI, config, a facade, and a recording fake.
Jev Repos & SDKs#community#php#sdk
Community
Butochnikov/laravel-typesafe-jevPHP
Butochnikov/laravel-typesafe-jevPHPAn exploratory study of zero-shot ham, spam, and phishing classification with Jev: enriched email context raised main-set accuracy from 93.62% to 98.64%, within 0.23 points of a trained TF-IDF baseline.
Jev Practices & Patterns#community#python#evaluation
An open 0.6B replica of Jev that turns states and questions into full probability distributions without decoding answer tokens, trained and evaluated on Maze, Snake, and ViZDoom.
Jev Repos & SDKs#community#python#open-models
Community
TianyuCodings/NanoJevPython
TianyuCodings/NanoJevPythonAn OpenTelemetry exporter wrapper that scores each log record with Jev for diagnostic value, priority, and routing, letting low-value events skip an LLM-analysis branch while every record stays in your archive.
Jev Repos & SDKs#community#typescript#routing
Communityreachjalil/jevlogsJavaScript
reachjalil/jevlogsJavaScriptA Scala 3 and ZIO HTTP client for TypeSafe's Jev System One API: ask typed Noul, Choice, and Score questions in one round-trip via a NamedTuple and get answers shaped exactly like the questions.
Jev Repos & SDKs#community#scala#sdk
Community
jamesward/zio-typesafe-aiScala
jamesward/zio-typesafe-aiScalaAn independent open reproduction of the System One model class: Qwen3.5-based 2B and 35B mixture-of-experts models that return typed Choice, Score, and Noul probabilities in one forward pass, with nothing distilled from Jev.
Jev Practices & Patterns#community#python#open-models
Community
Mapika/deciderPython
Mapika/deciderPythonAn independent baseline that reads typed option probabilities straight from a frozen Qwen3.5-4B's logits in one forward pass, reproducing Jev's interface pattern with open models rather than Jev's undisclosed model or training.
Jev Practices & Patterns#community#python#open-models
Community
TheoLeeCJ/SemIfPython
TheoLeeCJ/SemIfPythonA local-first MCP server that gives Claude Code, Codex, Cursor, and OpenCode structured quality scores from Jev across correctness, complexity, tests, security, and other dimensions while the agent writes code.
Jev Tools & CLIs#community#typescript#mcp
Community
NiazMorshed2007/jev-reviewTypeScript
NiazMorshed2007/jev-reviewTypeScriptAn Apple Silicon decision layer that scores every allowed option of a schema (booleans, enums, multi-selects) from MLX model logits in one prefill, assembles schema-valid JSON itself, and exposes a System One-compatible endpoint.
Jev Repos & SDKs#community#python#open-models
Community
bnsd55/jevmlxPython
bnsd55/jevmlxPythonA Rust CLI and MCP server that reranks live DuckDuckGo SERPs with Jev and audits SEO/GEO readiness (schema, robots.txt, sitemaps, llms.txt) with a fifty-rule engine, no paid SEO subscriptions, and a local SQLite history.
Jev Tools & CLIs#community#rust#cli
CommunityAkashPriyadarshii/jev-seoRust
AkashPriyadarshii/jev-seoRustA prose linter for Markdown and plain text that runs countable regex rules locally and, only after consent, sends single paragraphs to Jev for judgment rules like restating closers and stacked hedging.
Jev Tools & CLIs#community#typescript#cli
Community
DanRWilloughby/snifftestTypeScript
DanRWilloughby/snifftestTypeScriptA browser Snake game where code computes the legal moves, food distance, and reachable space and Jev picks one move per tick with a single Choice question; a late answer leaves the snake going straight.
Jev Cookbooks#community#typescript#games
Community
sorrycc/typesafe-snakeTypeScript
sorrycc/typesafe-snakeTypeScriptFifteen runnable OpenRouter recipes for Jev covering support triage, database indexing, PII scanning, moderation, lead scoring, a browser agent, and a Gmail labeler, each with a small labelled dataset and saved live results.
Jev Cookbooks#community#javascript#openrouter
Community
nexibeo/jev-cookbookJavaScript
nexibeo/jev-cookbookJavaScriptA semantic grep CLI that chunks files or staged diffs into 5-60 line pieces, packs 16 chunks and 16 Jev Noul questions into one request, and prints file:line hits above a probability threshold with grep-style exit codes.
Jev Tools & CLIs#community#typescript#cli
Community
kyu1204/jgrepTypeScript
kyu1204/jgrepTypeScriptAn async LangGraph workflow that sends a mocked email to Jev, receives a typed Choice between invoice and general, and routes it to a demo handler, with confidence and both label probabilities printed for inspection.
Jev Repos & SDKs#community#python#agents
Community
GiesN/typesafe-jev-workflowPython
GiesN/typesafe-jev-workflowPythonAn Elixir SDK for TypeSafe AI and Jev with typed Choice, Score, and Noul structs, retries, batching, and OTP integration; version 0.4.1 is the final release of this package line.
Jev Repos & SDKs#community#elixir#sdk
Community
nshkrdotcom/typesafe_sdkElixir
nshkrdotcom/typesafe_sdkElixirStart here with the Jev AI model
Hand-picked entries the maintainers recommend first, from official primitives to community tools.
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
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
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.
Can Jev Improve Demonstration Retrieval for In-Context Learning?Jev Benchmarks & Evaluations
Don't Call It a Decision ModelJev Practices & Patterns
Fast, Cheap, and Fair? Evaluating Decision ModelsJev Benchmarks & Evaluations
JEV-27B for Core AIJev Models & Reimplementations
JevBreak: Your Model, Their DecisionJev Benchmarks & Evaluations
- LLM Output Evaluation with ClefJev Benchmarks & Evaluations
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 NewsReddit: 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 NewsHacker 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 NewsHacker 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 NewsHacker 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 NewsHow 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 3904 entries from 293 source sites, last updated Nov 5, 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. 3904 of the 3904 entries carry one today.
For the canonical details, read the official TypeSafe docs and the API reference.