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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All 3919 Jev AI model resources
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Showing 1873–1920 of 3919 resources
x402 risk-check provider that scores agent counterparties before payment: OFAC, phishing and drainer feeds, transaction simulation, drainer-kit fingerprints and a Jev model reading context for injected instructions, issuing an ES256-signed attestation per verdict.
Jev Integrations & Adapters#community#x402#payments
pi coding-agent package that gates subagent dispatches: the task text is evaluated in one typed Jev call against configurable rules (per-rule probability questions with below/above thresholds), violations block the dispatch with per-rule reasons, and errors fail open to allow.
Jev Tools & CLIs#community#pi#guardrails
Community
G0-0000/pi-subagent-jevTypeScript
G0-0000/pi-subagent-jevTypeScriptMCP server that lets Claude Code, Cursor and other clients drive Chrome over the DevTools Protocol, exposing an accessibility-tree menu of stable refs. Its example Jev loop has Jev pick browser actions from that menu, and the README reports about a third fewer tokens and a quarter fewer tool calls in a blind benchmark.
Jev Agents & MCP#community#mcp#browser-automation
Community
Silbercue/public-browserTypeScript
Silbercue/public-browserTypeScriptOpen-source TypeScript agentic operating system: a core runtime, app for web and mobile, CLI, cloud services and first-party plugins. The directory's curated summary reports it integrates TypeSafe System One decision services for sub-100ms intent classification, action dispatching and confidence-gated tool execution.
Jev Integrations & Adapters#community#agents#framework
Community
elizaOS/elizaTypeScript
elizaOS/elizaTypeScriptClaude Code plugin that compacts conversations by moving old tool results to local files instead of summarizing them, leaving a ticket line in their place. When the agent needs something back, Jev can choose among the moved-out items in words for a `find`, while `recall` restores any item exactly by id.
Jev Tools & CLIs#community#claude-code#context-management
Open System One decision models (27B, 9B and 4B on Qwen chat bases, in bf16, GGUF and MLX) that answer Choice, Noul and Score questions with a probability for every option from one forward pass. The repo carries the trainer, data builders, evaluation harnesses and a record of every run.
Jev Models & Reimplementations#community#decision-models#open-weights
Community
getainode/jebadiahPython
getainode/jebadiahPythonHigh-performance Go event bus with a bounded MPMC ring buffer, fan-out and ordered handlers, plus an optional routing layer that evaluates deterministic rules first, reuses cached decisions, and asks Jev a typed Choice only for ambiguous cache misses.
Jev Integrations & Adapters#community#go#event-bus
Community
Protocol-Lattice/GoEventBusGo
Protocol-Lattice/GoEventBusGoReact dashboard and simulator for a 10-million smart-meter fleet that triages telemetry through a deterministic edge pre-filter and then Jev Choice, Score and probability primitives, triggering SIM quarantine, work orders or RF fixes at about $33 per month in its own model.
Jev Demos & Experiments#community#iot#simulation
Community
pjmenon45/Jev-IOTTypeScript
pjmenon45/Jev-IOTTypeScriptFilament plugin that filters admin table rows by a plain-English statement: each row gets a Jev Noul probability that the statement is true, and rows at or above the threshold stay. Scores are cached by content, so reruns of the same statement are instant and free.
Jev Integrations & Adapters#community#laravel#filament
Community
vibefilter/filamentPHP
vibefilter/filamentPHPChinese-language research project for multimodal social-risk moderation: a local Qwen3-VL-32B with language-side LoRA emits structured evidence JSON, and a fixed Jev policy turns that evidence into risk bands, with frozen test leaderboards and pure-Jev ablations.
Jev Benchmarks & Evaluations#community#moderation#multimodal
Small test harness and benchmark for Jev through OpenRouter's Decisions API. It ships a thin decide wrapper, 17 documentation-derived cases with 23 checks covering Noul, Choice and Score, and a script comparing Jev against GPT-5.6 Terra and Claude Opus 5.
Jev Benchmarks & Evaluations#community#benchmark#openrouter
Community
souvikr/jev-testPython
souvikr/jev-testPythonPython CLI that runs declarative YAML, JSON or JSONL test suites natively on Jev Noul, Choice and Score decisions for RAG faithfulness, hallucination detection and agent safety, with watch mode, parallel batching, a pytest plugin and GitHub Actions PR reporting.
Jev Benchmarks & Evaluations#community#cli#ci-cd
Community
00200200/jev-judgePython
00200200/jev-judgePythonThree.js autonomous-driving simulator that splits work between a System 2 slow planner and a Jev-style System 1 reflex loop at 60 Hz, with a safety brake that overrides the planner and applies full braking when time-to-collision drops below threshold.
Jev Demos & Experiments#community#threejs#simulation
Local OpenAI- and Anthropic-compatible API gateway in Rust that reuses Codex, Grok, Kiro or Vercel AI Gateway logins. It carries Jev through its model catalog and evaluation path, exposing typesafe-ai/jev via POST /v1/evaluations with state and typed questions.
Jev Integrations & Adapters#community#gateway#rust
Community
RyanKung/rotomRust
RyanKung/rotomRustUnofficial portable Clojure SDK for TypeSafe System One. It posts state and typed questions to /v1/systemone, lists available models, and returns validated Clojure data with keyword or string answer keys, on a JVM backend or a native Jolt backend.
Jev Repos & SDKs#community#clojure#sdk
Community
antlobach/clojevClojure
antlobach/clojevClojureRuby-native AI framework whose RubyLLM::Judge class asks typed judgment questions: a probability that a statement holds, choices or scores, answered by the TypeSafe provider alongside 18 other hosted and local providers under one consistent API.
Jev Repos & SDKs#community#ruby#framework
Community
crmne/ruby_llmRuby
crmne/ruby_llmRubyCross-platform desktop app and serving system for open Jev-like decision models. It runs laya, kev, Jev-Omni and others locally behind the Jev API at POST /v1/systemone, with a playground, versioned templates, decision history and a LoRA Train page.
Jev Models & Reimplementations#community#desktop-app#local-ai
Community
BudEcosystem/Bud-Decision-StudioHTML
BudEcosystem/Bud-Decision-StudioHTMLLocal code search for coding agents: ripgrep and BM25 shortlist function-level chunks, Jev Noul relevance questions run across parallel requests, and accepted excerpts return to Codex, Claude Code, OpenCode or Pi through MCP or the `oko ask` command.
Jev Agents & MCP#community#mcp#code-search
Community
bartlomein/okoRust
bartlomein/okoRustSupervisor for unattended coding agents: it tracks cross-turn state and asks one batched Jev Choice whether a trajectory should continue, pause or escalate, while deterministic code owns dangerous-command blocking, budget caps and Ed25519-signed receipts.
Jev Tools & CLIs#community#guardrails#safety
Community
VeridicalTech/EdwardPython
VeridicalTech/EdwardPythonFuzzy linter hook for Claude Code and Codex: after the agent edits a file, it sends the added code to Jev, which answers Noul checks against team rule packs in about 0.3 seconds, letting the agent fix violations before code review.
Jev Tools & CLIs#community#linter#claude-code
Community
ckorhonen/jev-lintHTML
ckorhonen/jev-lintHTMLA Pi coding-agent extension that uses Jev to classify each request and route it to one of three configured models. Supports TypeSafe, Cloudflare AI Gateway, Vercel AI Gateway and OpenRouter backends, with doctor checks, shadow mode and an off-by-default setup.
Jev Tools & CLIs#community#coding-agents#routing
A teams-first multi-agent orchestration plugin for Claude Code with opt-in Jev hooks for sub-millisecond judgment points, decision caching and per-point egress controls. TypeScript, MIT, with a staged team pipeline and tmux CLI workers.
Jev Tools & CLIs#community#claude-code#orchestration
A local Jev-compatible server that reads Choice, Score and Noul answers from the logits of any MLX checkpoint or OpenAI-compatible endpoint with no training, serving POST /v1/systemone as a drop-in for the official TypeSafe SDK.
Jev Models & Reimplementations#community#mlx#calibration
Community
bradAGI/rulingPython
bradAGI/rulingPythonAn open recipe for a 27B multimodal decision model trained with full-weight SFT on 73,000 examples over one H200, serving choice, noul and score on /v1/systemone with per-checkpoint provenance and released calibration plots.
Jev Models & Reimplementations#community#calibration#qwen
Community
denis-pplx/autojevPython
denis-pplx/autojevPythonA Jev-style one-pass skill router for OmO agents: a frozen Qwen2.5-0.5B with a tiny option-attention head scores the whole skill catalog per prompt, and an extension shrinks the system prompt to the top-K skills, failing open.
Jev Tools & CLIs#community#routing#skills
Community
islee23520/omo-jevlike-routerPython
islee23520/omo-jevlike-routerPythonAlibaba's multi-agent platform, which implements native TypeSafe Jev classification through JevClassifierModel for binary, choice and score routing across agent pipelines. Python 3.11+, Apache-2.0, with a FastAPI agent service and web UI.
Jev Integrations & Adapters#community#multi-agent#framework
Community
agentscope-ai/agentscopePython
agentscope-ai/agentscopePythonA CLI, Claude Code plugin and Pi extension that pick a model per task from one Jev call: a Choice over candidates asked in both orders plus a complexity Score that sets a minimum tier, with quota-aware filtering and fallback.
Jev Tools & CLIs#community#routing#claude-code
Community
Ruivalim/decision-routerTypeScript
Ruivalim/decision-routerTypeScriptA CLI that checks new papers, repositories and feeds each morning against your open research questions, asking Jev Noul gates and Score dimensions through Pydantic AI's typesafe model; an LLM writes only the prose into Obsidian notes.
Jev Tools & CLIs#community#research#cli
An open benchmark runtime for document-grounded decision models: it scores Jev Noul, Choice and Score answers on pinned tasks and counts malformed probability distributions as misses so model comparisons stay reproducible.
Jev Benchmarks & Evaluations#community#benchmark#evaluation
Community
Hanno-Labs/decision-benchPython
Hanno-Labs/decision-benchPythonA benchmark that steers decision models through 100 key-and-door grid puzzles with one Jev Choice per move, scored against an exact BFS solver; it found Jev picks an optimal move about 90% of the time yet finishes only 57 of 100 games.
Jev Benchmarks & Evaluations#community#benchmark#gridworld
A Craftax (Crafter) survival harness where deterministic code lists every feasible action with its facts and Jev picks one Choice per step, optionally guided by an LLM-written objective and standing rules; three-seed ablations are included.
Jev Demos & Experiments#community#craftax#games
Community
mansicer/jev-playsPython
mansicer/jev-playsPythonA Jev harness for PostgreSQL: 41 semantic operators plus a native Rust extension evaluate row-level predicates with Noul questions and keep the returned probabilities for explicit decision thresholds, leaving joins and aggregation to SQL.
Jev Integrations & Adapters#community#postgresql#nl2sql
Community
Sheltercosmo/jev4pgPython
Sheltercosmo/jev4pgPythonA training-free runtime that turns dense Qwen3 or Qwen3.5 checkpoints into a Jev-style Noul, Choice and Score service, sharing one state prefill across isolated questions and reading each answer from candidate-token logits.
Jev Models & Reimplementations#community#qwen#local-inference
Community
HopLee6/QwevPython
HopLee6/QwevPythongrep, sort, cut and uniq that match by meaning: each line whose Jev Noul clears the threshold survives grev, sibling filters route by Choice and rank by Score, and the output is always your own input, never generated text.
Jev Tools & CLIs#community#cli#coreutils
Community
aurorainfra/grevGo
aurorainfra/grevGoA bilingual Chinese/English single-page deep dive into Jev: one-step decision mechanics, local measurements, failure modes and production boundaries, published at jev.kuhung.me alongside an interactive micro-decision demo.
Jev Guides & Articles#community#chinese#deep-dive
Community
kuhung/understanding-jevHTML
kuhung/understanding-jevHTMLA Next.js dashboard and daily Vercel cron that scores public job postings against one resume with Jev through the Vercel AI Gateway, then applies through a Grok Bot webhook that fills ATS forms and writes status back.
Jev Integrations & Adapters#community#job-search#vercel
Community
mcgalleg/grokbot-jev-jobsTypeScript
mcgalleg/grokbot-jev-jobsTypeScriptVercel Labs' Unix-like coding agent CLI written in Zig, shipping a typesafe_permission_reviewer builtin that runs the agent's permission decisions through Jev rather than an LLM call. Model-agnostic and embeddable via libfx and ACP.
Jev Tools & CLIs#community#coding-agents#cli
Community
vercel-labs/fxZig
vercel-labs/fxZigA Claude Code PreToolUse hook that blocks known key formats locally and sends only masked unknown high-entropy strings to Jev for a Noul judgment, blocking at 0.80 and asking the human from 0.30 or whenever Jev is unavailable.
Jev Tools & CLIs#community#security#claude-code
Chrome MV3 extension plus a local MCP server exposing 50 browser tools; its chrome_act_toward_goal micro-loop uses TypeSafe Jev System One or a local decider to pick the next action on an 85%+ pruned, Shadow-DOM-pierced DOM tree, dispatching trusted CDP events in logged-in Chrome without stealing focus.
Jev Agents & MCP#community#mcp#browser-automation
Community
GoldenLoaf24h/browserpawTypeScript
GoldenLoaf24h/browserpawTypeScriptRust coding-agent harness (MIT, ~20k stars) whose crates/jcode-base/src/jev.rs is a typed TypeSafe Jev decision transport, used for memory pruning (memory_jev.rs), browser navigation (browser_jev.rs), and voice routing (voice_intent.rs) with separate provider selectors per purpose.
Jev Tools & CLIs#community#rust#coding-agent
Community
1jehuang/jcodeRust
1jehuang/jcodeRustEdge deployment demo that exports a jevlike one-pass text scorer as ESP-IDF firmware; packed TinyScorer weights run on the ESP32 in C with no tensor library and classify ASCII text as command, weather, or complex, alongside a Python trainer and host-side check.
Jev Models & Reimplementations#community#esp32#embedded
Community
david-cermak/jevlike-esp32Python
david-cermak/jevlike-esp32PythonIndependent training toolkit and open weights for System One decision models in the same category as Jev: 17M, 68M, and 400M models answering Choice, Noul, Score, and reranking questions, with Python and ONNX inference and a documented generalization gap to Jev 1.13 on the project's S1MB benchmark.
Jev Models & Reimplementations#community#decision-models#onnx
Community
hotchpotch/bekko-system-onePython
hotchpotch/bekko-system-onePythonCLI-installed Gmail classifier that runs 24/7 on user-owned Google Apps Script: the worker asks Jev for three typed judgments per thread (requires_action, is_important, bucket), applies labels, stars, and optional archiving, and routes ambiguous or low-confidence mail to a Review label.
Jev Integrations & Adapters#community#gmail#email
Community
vynnlee/jev-mailTypeScript
vynnlee/jev-mailTypeScriptOpen-source AI email assistant (Next.js, Postgres, 12k+ stars) with a decision-model layer that can run on openrouter:typesafe/jev-1.13: Jev-backed questions cover rule selection, cold-email detection, thread status, recurring patterns, unsubscribe pages, and sender categorization, each with evals.
Jev Integrations & Adapters#community#email#gmail
Community
elie222/inbox-zeroTypeScript
elie222/inbox-zeroTypeScriptMerged PR in the Kilo Code cloud monorepo that replaces its LLM auto-routing classifier with one OpenRouter /systemone Choice request to typesafe/jev-1.13; the PR reports 0.93-0.94 route accuracy on 72 golden cases at roughly $0.00028 per call, with a 250 ms transport-error retry.
Jev Integrations & Adapters#community#routing#coding-agents
Community
Kilo-Org/cloudTypeScript
Kilo-Org/cloudTypeScriptJag, a Jev-inspired visual grounding model: a Qwen3.5-0.8B backbone plus a lightweight MLP predicts normalized cxcywh bounding boxes for an image and referring expression in a single forward pass, removing autoregressive coordinate generation from the base model.
Jev Models & Reimplementations#community#visual-grounding#qwen
Community
xyzzzh/JagPython
xyzzzh/JagPythonReproducible benchmark asking which approved agent answers changed meaning after a config edit: one Jev Choice (same, fact_differs, action_differs, specificity_differs) caught all 19 real changes with 13 false alarms across 109 before/after pairs, versus 33 for a three-tier stack and 19 for an LLM judge.
Jev Benchmarks & Evaluations#community#benchmark#regression-testing
Two runnable demo apps that send identical typed questions to OpenAI Decisions (gpt-6-luna) and TypeSafe Jev (jev-latest) in parallel: a support ticket router over 20 labelled tickets and a cloud alert triage over 15 labelled alerts, with thresholds in plain Python making the final calls.
Jev Demos & Experiments#community#comparison#fastapi
Start 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.
Do Multimodal Models Decide Consistently on Equivalent Optical Spectra?Jev Benchmarks & Evaluations
@harlan-zw/jevJev Repos & SDKs
Jev-AD: Safe Language-Guided Autonomous Driving via a Language World ModelJev Demos & Experiments
Jev GUI Training PreviewJev Models & Reimplementations
- jev-playgroundJev Demos & Experiments
- JeviewJev Tools & CLIs
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 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.