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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 1393–1440 of 3919 resources

Jev Xiangqi
1GitHub stars
Play Chinese Chess against Jev: every AI move fans out a Score 0-4 question per legal move in a single system_one() call, then plays the highest-scoring move. No minimax and no eval tables, just Jev's read of the position, with the top 10 shown as score bars.
Jev Demos & Experiments#community#catalog-import#logicrw
Communityzafer-liu/jev-xiangqiHTML
Jev Context
1GitHub stars
A local Codex plugin for codebase search: it runs ripgrep, asks Jev a binary Yes/No relevance question for each candidate passage, and returns those above a probability threshold (default 0.50). Codex can expand results or surrounding context without extra Jev calls.
Jev Integrations & Adapters#community#catalog-import#logicrw
Communityzbush/jev-contextJavaScript
jevinf
1GitHub stars
A Jev-kind model inference engine and compatible API server in Python: each candidate path runs as segmented forwards with prefix reuse, and the Jev wire contract is served on top with NanoJev as the wired backend. The README reports 2.57x single-request throughput on MPS at 100% argmax agreement.
Jev Repos & SDKs#community#catalog-import#logicrw
Communityzerodegress/jevinfPython
Jev Browser (Cline plugin)
0GitHub stars
A Cline plugin that gives the agent an isolated Playwright Chromium through a jev_run tool: Jev chooses a concrete operation and target per step via AI SDK 7's experimental_evaluate through the Vercel AI Gateway, and when it picks TYPE_TEXT, gemini-2.5-flash-lite writes the field value.
Jev Integrations & Adapters#community#catalog-import#logicrw
Communityabeatrix/cline-plugin-jev-browserTypeScript
Hafen
0GitHub stars
A testing app and CLI for chat endpoints: send messages to any chat API, watch replies stream in as a conversation, and check every reply with rule checks (JSONPath, latency, tokens, cost, tool calls) and judged checks including TypeSafe's System One. Export the suites as files and run them in CI.
Jev Tools & CLIs#community#catalog-import#yibie
Communityabhimanyupandian/hafenJavaScript
AlgoVault Integrations
0GitHub stars
Examples for consuming the AlgoVault Verifiable-Signal v1.0 spec across trading and execution platforms — FreqTrade, Hummingbot, 3Commas, Coinbase AgentKit and others — plus a decision-layer example whose transformer returns a TypeSafe SystemOneRequest that Jev answers before code applies every threshold.
Jev Integrations & Adapters#community#catalog-import#cobanov
Communityalgovaultlabs/algovault-integrationsTypeScript
MCP Router
0GitHub stars
An open-source Jev-based MCP router: it discovers, catalogs, classifies and deduplicates every MCP server and tool you have, then exposes each agent only the small, authorized subset it needs for the task. Routing decisions are System One Choice/Score/Noul questions, scored by a pluggable engine at the edge or hosted.
Jev Agents & MCP#community#catalog-import#logicrw
Communityamantux/mcp-routerPython
jev-palette
0GitHub stars
A semantic command palette demo where Jev ranks 77 commands by intent in Portuguese or English: one Choice question per keystroke, with the full probability distribution over the command catalog as the ranking. Runs side by side with a classic fuzzy matcher that fails honestly on the same queries.
Jev Demos & Experiments#community#catalog-import#cobanov
Communityamycardoso/jev-paletteJavaScript
Turing Jail
0GitHub stars
A three-level AI interrogation game powered by TypeSafe Jev System One: write a statement, face the warden's verdict built from live structured analysis of plea, logic and paradox, and try to earn your release. Runs on Bun with SQLite locally and Neon/Postgres in production.
Jev Demos & Experiments#community#catalog-import#logicrw
Communitybugkiwi/turing-jailTypeScript
Jev Leveling Agent
0GitHub stars
A guide-directed leveling agent for a private TBC 2.4.3 server: ten clients on one PC follow generated quest guides with scripted, self-verifying skills, and a vision tutor takes over only when a routine fails.
Jev Agents & MCP#community#catalog-import#madewithjev
Communitychalkychalk42/jev
Chess with Jev
0GitHub stars
Browser chess and Chess960 where code works out every legal move's facts and Jev picks one per turn as a single typed Choice; the mirror of the chriswijnia.com/lab/chess monorepo.
Jev Demos & Experiments#community#catalog-import#cobanov
Communitycwdx/chess-with-jevTypeScript
Jevvie (browser companion)
0GitHub stars
A website companion's code: a page's actions are offered as WebMCP tools, a visitor's request becomes one Jev Choice, and a three.js voxel character hops to the button and does it.
Jev Demos & Experiments#community#catalog-import#cobanov
Communitycwdx/jevvieTypeScript
Jev SEO Audit
0GitHub stars
Audits any business site for SEO and AI-search visibility: a deterministic crawl feeds narrow typed Jev judgements that stream into a live dashboard page by page, with no LLM-authored findings.
Jev Tools & CLIs#community#catalog-import#cobanov
Communitydeploymates/jev-seoTypeScript
TypeSafe Java Client
0GitHub stars
A Java 21 client and CLI for the TypeSafe API: send state with Noul, Choice, and Score questions, get typed answers, and optionally run local Clef and Laya models via ONNX Runtime with no API key.
Jev Repos & SDKs#community#catalog-import#cobanov
Communitydfa1/typesafe-javaJava
Vibe SDK
0GitHub stars
A JavaScript package of SDK code built through iterative 'vibing', listed in logicrw's awesome-jev-projects; the repository ships code but almost no documentation.
Jev Repos & SDKs#community#catalog-import#logicrw
Communitydotnetvibecoderz/vibe_sdkJavaScript
Vej
0GitHub stars
A local Jev clone: calibrated noul, choice, and score judgments from small NLI cross-encoders, running in the browser or as a Node server with Jev's request and response shapes.
Jev Repos & SDKs#community#catalog-import#madewithjev
Communitydraeder/vejJavaScript
Jev Cua
0GitHub stars
A local Codex and Waku plugin for app-agnostic Mac computer use: Accessibility actions with a visual fallback, approval-gated mutations, and a Jev fast path for repetitive tasks.
Jev Agents & MCP#community#catalog-import#madewithjev
Communityeronmmer/jev-cuaTypeScript
Strayguard
0GitHub stars
A git pre-commit hook that asks TypeSafe Jev whether each new file belongs in your repo, catching scratch scripts, debug dumps, build output and local config before they land. Local rules run first, so .env and .DS_Store are matched locally and never sent anywhere.
Jev Tools & CLIs#community#catalog-import#cobanov
Communityeve2512/strayguardPython
jev-rag-guard
1GitHub stars
A typed-decision accuracy layer for RAG pipelines that wraps the seam between retrieval and generation with six cheap checks: intent, relevance, clarify, sufficiency, grounding and caveat. Each check returns a calibrated probability you can threshold and log.
Jev Repos & SDKs#community#catalog-import#cobanov
Communityfurkandrms/jev-rag-guardPython
jev-mod
0GitHub stars
A Claude Code mod that adds $.jev to the engine so other mods can ask TypeSafe Jev typed Choice, Score and Noul questions and get calibrated probabilities back. Answers are validated against their questions, keys are kept in the keychain, and calls time out at 4 seconds by default.
Jev Integrations & Adapters#community#catalog-import#yibie
Communitygecm0/jev-modTypeScript
JevFilterForX
0GitHub stars
A browser extension that scores X timeline posts in real time with Jev and folds low-signal content while keeping it expandable. Posts are rated 0-100 on information signal, actionability and originality, and without an API key the extension runs in local mock mode.
Jev Tools & CLIs#community#catalog-import#logicrw
Communitygrayrepo-byte/jev_filter_for_xTypeScript
ecom-cs-agent
0GitHub stars
An e-commerce after-sales customer-service agent built on the learn-claude-code skeleton. Every turn asks Jev for the customer's intent with a confidence and a needs-human probability in one call, and a pure-code gate sends low-confidence cases to a human before the LLM runs.
Jev Agents & MCP#community#catalog-import#yibie
Communityguow7394/ecom-cs-agentPython
slopcheck
0GitHub stars
A CLI and Claude Code Stop hook that reports which AI tells a passage contains, quoting the line and a probability instead of judging whether AI wrote it. Regex checks 18 tells for free, one Jev call judges 15 more, and code owns every threshold.
Jev Tools & CLIs#community#catalog-import#logicrw
Communityharshpuri84/slopcheck-jevPython
solari-reflex
0GitHub stars
A speed layer for computer use on Solari: each step is one structured observation, one Jev decision and one verified action, with no screenshots in the loop. It drives both browsers and Linux desktops through the same Surface interface.
Jev Repos & SDKs#community#catalog-import#madewithjev
Communityhitakshia/solari-reflexTypeScript
Jev Turn Analysis
0GitHub stars
A Rust CLI that reads completed Claude Code and Codex sessions, scores each turn with Jev, and turns recurring patterns into suggested edits for your AGENTS.md, skills and tools. Ships as jta with init, analyze and report commands.
Jev Tools & CLIs#community#catalog-import#madewithjev
Communityhobbs/jev-turn-analysisRust
pi-jev-compact
0GitHub stars
A Pi extension for selective, verbatim context compaction: Jev scores every tool call and its result, unneeded calls are dropped, and everything kept stays byte-identical. The README measured 15.5% reclaimed on a synthetic window, rising to 33.5% with prose included.
Jev Integrations & Adapters#community#catalog-import#cobanov
Communityilkerulusoy/pi-jev-compactTypeScript
The Jev-enator
0GitHub stars
Jev-backed Claude Code hooks that make calibrated judgment calls inside the agent loop: a danger gate before destructive commands, a failure notice on command output, a completion check and three more experimental hooks. Each check costs about 350 ms and $0.00004.
Jev Integrations & Adapters#community#catalog-import#madewithjev
Communityjakenbear/the-jev-enatorPython
JevPulse
0GitHub stars
A consensus engine for YouTube comments that replaces conversational summarization: Gemini Flash designs a per-video rubric once, Jev evaluates every comment against it in parallel batches, and code computes agreement deterministically. Live at jevpulse.vercel.app.
Jev Tools & CLIs#community#catalog-import#logicrw
Communityjaygajera17/jevpulseJavaScript
GameCoach Web
0GitHub stars
A browser chess coach where Stockfish (WASM) owns the truth about the position and Jev makes the coaching judgment after every move, with templates and a small writing model supplying the words. Status: Wave 0 scaffold and Jev feasibility spike.
Jev Demos & Experiments#community#catalog-import#madewithjev
Communityjoellewis/game-coachTypeScript
ensk
0GitHub stars
An English–Icelandic dictionary running on Cloudflare Workers: D1 provides full-text lookup, Vectorize adds semantic recall, and Jev System One re-ranks the candidates. The repository has no README, so details come from the GitHub description and list context.
Jev Tools & CLIs#community#catalog-import#madewithjev
Communityjokull/enskTypeScript
AI Hold'em
0GitHub stars
An open-source no-limit Texas Hold'em game for two to six human and AI players, with TypeSafe Jev, Equity Rules, Upright Eevo and configurable LLM bots as opponents. The poker engine stays authoritative for cards, turns, betting, pots and winners.
Jev Tools & CLIs#community#catalog-import#yibie
Communityjonime/ai-holdemTypeScript
fast-jev-compaction-pi
0GitHub stars
A Pi extension that asks Jev, per completed tool call, whether the call and its full result still matter, then applies local keep, truncate or drop rules before compaction. Kept evidence is written verbatim into a Verbatim Tool Evidence block.
Jev Integrations & Adapters#community#catalog-import#logicrw
Communityjoslynsmall/fast-jev-compaction-piTypeScript
judge_rails
0GitHub stars
A Ruby gem that turns typed Jev judgments into ordinary ActiveRecord attributes: Noul, Choice and Score answers become indexable, sortable columns with SQL scopes like urgency_above(0.8). It also works as a plain Ruby client with no Rails.
Jev Integrations & Adapters#community#catalog-import#cobanov
Communityjust-the-v/judge_railsRuby
jev-decision-gateway
0GitHub stars
A provider-agnostic decision gateway that puts Jev in front of expensive generative LLMs: small bounded questions are batched through Jev, a deterministic policy layer builds the execution plan, and generation runs only when the policy says so.
Jev Integrations & Adapters#community#catalog-import#logicrw
Communitykuldeepsinh19/jev-decision-gatewayTypeScript
typesafe-jev-dojo
0GitHub stars
A live, graphical dojo for Jev with six real-time canvas scenes over one WebSocket: task routing across model tiers, ticket triage, inbox-scale queues and an honest Jev-vs-Claude gauntlet. Boots in SIM mode without an API key.
Jev Demos & Experiments#community#catalog-import#madewithjev
Communitylafollett-labs/typesafe-jev-dojoTypeScript
Jev Unpack hook
0GitHub stars
A Codex and Claude Code Stop hook that detects overloaded multi-topic messages and forces the agent to present issues one at a time with context and missing info, using two Jev Choice questions behind confidence thresholds.
Jev Integrations & Adapters#community#catalog-import#cobanov
Communitylucaminudel/jev-unpack-hookPython
Jev demo (customer-service chatbot)
0GitHub stars
A customer-service chatbot routed by Jev: one API call per turn asks every question in the decision tree up front and discards the unneeded answers — the docs' speculative fan-out — with a human-handoff Noul and a frustration Score riding along.
Jev Demos & Experiments#community#catalog-import#logicrw
Communityminghanminghan/jev-demoTypeScript
Jev CLI
0GitHub stars
A stateless Rust CLI for typed semantic judgments with the Jev model: state and questions in, calibrated answers and exit codes out, as stable JSON on stdout. Ships with an Agent Skill for scripts, CI and agent workflows.
Jev Tools & CLIs#community#catalog-import#madewithjev
Communitymodel-clis/jevRust
jev-reflex
0GitHub stars
An MCP server that lets Claude hand a whole browser task to Jev: Claude plans and verifies while Jev picks each click, type or select from a numbered table of visible controls in about 100 ms, using browser-use/jev-ultrafast's loop.
Jev Agents & MCP#community#catalog-import#madewithjev
Communitymsalvalaggio/jev-reflexPython
opencode-jev-pre-llm
0GitHub stars
An OpenCode V2 plugin that asks TypeSafe Jev whether a prompt is deterministic before the LLM reasons, injecting a JEV PRE-ANALYSIS block and temperature 0 for deterministic turns so simple prompts skip chain-of-thought. Jev failures fail open and the session continues normally.
Jev Integrations & Adapters#community#catalog-import#yibie
Communitymurilogteixeira/opencode-jev-pre-llmTypeScript
skill-picker
0GitHub stars
A Python CLI that ranks your own agent skills against a request so your agent can suggest the right one to invoke, printing JSON with a fit probability per skill and a gate probability for whether any skill applies. Ranking runs on Jev and costs two calls, 1.9 seconds on average.
Jev Tools & CLIs#community#catalog-import#madewithjev
Communitymuskanpaliwal/skill-pickerPython
Cube Lab
0GitHub stars
An interactive Three.js Rubik's Cube that walks the seven-step beginner method: local planners generate candidate formulas from the real sticker state, Jev chooses between them through Choice questions, and a local Node proxy keeps your API key in the browser while requests go to TypeSafe's System One API.
Jev Demos & Experiments#community#catalog-import#logicrw
Communityngocvychu38-web/cube-labHTML
jev-decoder
0GitHub stars
A set of experiments that uses TypeSafe's Jev as a decoder through its Choice primitive, sampling ASCII characters, BPE tokens and grammar-constrained SQL from Jev's probability distributions, and measuring next-character loss against uniform sampling on tiny-shakespeare.
Jev Demos & Experiments#community#catalog-import#cobanov
Communitypanalexeu/jev-decoderPython
Laya Website Security Copilot
0GitHub stars
A local-first Chrome extension that inventories a page's browser-visible attack surface, runs deterministic checks for mixed content, insecure forms and missing headers, and can add typed Laya or official Jev decisions through an optional gateway. Findings carry severity, confidence and evidence.
Jev Tools & CLIs#community#catalog-import#logicrw
Communitypateti-hub/laya-browser-guardJavaScript
phocinae-server
0GitHub stars
A local FastAPI inference server for the 150M-parameter Phocinae-Largha decision model that speaks the TypeSafe /v1/systemone contract: one POST returns noul, choice and score answers from a single forward pass, serving only 127.0.0.1 and never implementing chat or OpenAI-compatible endpoints.
Jev Repos & SDKs#community#catalog-import#logicrw
Communityphocinae/phocinae-serverPython
Maza
0GitHub stars
A local MCP gateway that connects your MCP servers once and exposes just two tools to agents: find_tool discovers a capability through Jev Choice questions and execute_tool runs it with arguments validated against the original schema, managed from a CLI and a local dashboard.
Jev Agents & MCP#community#catalog-import#madewithjev
Communityprasanth263/mazaJavaScript
local-decider
0GitHub stars
A pre-action gate for tool-using agents that decides allow, confirm or block with deterministic rules before a neural decider, plus a CDP browser loop whose decider swaps between hosted Jev and a local System One-compatible server through environment variables alone.
Jev Tools & CLIs#community#catalog-import#yibie
Communitypusucip25/local-deciderPython
TypeSafe AI Go SDK
0GitHub stars
A Go client for TypeSafe AI whose wire format and default retries follow the Python SDK v0.6.0 with a smaller Go-native API: send noul, choice and score questions in one SystemOne call and read typed results, usage counts and the request ID.
Jev Repos & SDKs#community#catalog-import#madewithjev
Communityradixils-dev/typesafe-sdk-goGo

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.