Skip to content
JevDirectory.orgTraffic count unavailable. View site traffic

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 2161–2208 of 3919 resources

jev-monid-poc
1GitHub stars
Four Node scripts pairing Jev relevance, routing, and verification decisions via Vercel AI Gateway with pay-per-call Monid execution and per-team budget gates.
Jev Tools & CLIs#community#github
Communitysprah/jev-monid-pocJavaScript
typesafe-go
1GitHub stars
Independent Go SDK for System One that sends text or structured state, asks typed Choice, Score, and Noul questions, and returns typed answers plus model discovery.
Jev Repos & SDKs#community#github
Communityyoneyy/typesafe-goGo
typesafe-mcp
1GitHub stars
Python MCP server over stdio that exposes Jev to an agent fleet with judge, rerank, and raw systemone tools plus Ollama-backed compilation.
Jev Agents & MCP#community#github
CommunityObrais-cloud/typesafe-mcpPython
jev-router
1GitHub stars
Zero-dependency Node ticket router that answers routing, priority, urgency, auto-reply, sentiment, and complexity for each ticket in one parallel Jev call.
Jev Integrations & Adapters#community#github
Communityhj01857655/jev-routerJavaScript
typesafe-sdk-go
1GitHub stars
Stdlib-only Go SDK for TypeSafe Jev: ask dozens of noul, choice, and score questions in one SystemOne call and branch on probabilities plus confidence, with a matching shell CLI.
Jev Repos & SDKs#community#github
Communityguchengod/typesafe-sdk-goGo
neuralint
1GitHub stars
Diff-scoped semantic linter that keeps versioned YAML rules in-repo, checks merge-base diffs with bounded Jev decision matrices, and emits findings a coding agent can act on.
Jev Tools & CLIs#community#github
Communityjpowersdev/neuralintHTML
jev-go-sdk
3GitHub stars
Dependency-free Go client mirroring the official Python and JS SDKs: send one state with typed Noul, Choice, Score, and Raw questions and get calibrated answers in milliseconds.
Jev Repos & SDKs#community#github
Communityajayk/jev-go-sdkGo
systemone
1GitHub stars
Self-hostable SystemOne-compatible API serving the frozen AutoJev Security V2.3 release as security-one, with shared-state parallel questions and bounded admission.
Jev Agents & MCP#community#github
Communitysuperagent-ai/systemonePython
FYIsoft.Extensions.AI.Providers
1GitHub stars
MIT-licensed Microsoft.Extensions.AI providers for Anthropic Claude and TypeSafe Jev, plus a SupportDesk console sample wiring triage, drafting, and review together.
Jev Repos & SDKs#community#github
CommunityFYIsoft/FYIsoft.Extensions.AI.ProvidersC#
jevis
2GitHub stars
Dart package driving Flutter integration tests with Jev: register tap, text, scroll, and custom actions, state a goal, and let Jev pick actions within an attempt budget.
Jev Integrations & Adapters#community#github
Communityjaewgwon/jevisDart
jev4j
1GitHub stars
Java SDK for TypeSafe with typed noul, choice, and score handles: pass records, maps, or strings as state and read answers back by handle or explicit key.
Jev Repos & SDKs#community#github
Communitygalitianu/jev4jJava
jev-cli
1GitHub stars
Bun CLI for Jev judgments: evaluate a mixed question map in one call at the root, or use choice, noul, and score shortcuts that print shell-friendly scalar values.
Jev Tools & CLIs#community#github
Communityandrueandersoncs/jev-cliHTML
cleaner
1GitHub stars
Repository whose README shows only the standard Next.js starter: dev server, page editing, font optimization, docs links, and Vercel deployment.
Jev Tools & CLIs#community#github
Communitymahan-ym/cleaner
apple-silicon-systemone-benchmark
1GitHub stars
Native Apple Silicon harness comparing local decision models through one decision interface, running models serially and emitting an offline dashboard with latency and accuracy.
Jev Benchmarks & Evaluations#community#github
CommunityGiamme/apple-silicon-systemone-benchmarkPython
mrsecret
1GitHub stars
Chrome MV3 extension blurring secrets and PII in-page with instant regex plus a Jev classifier for ambiguous snippets, keeping the rest of the page readable.
Jev Tools & CLIs#community#github
Communityvkpdeveloper/mrsecretTypeScript
longjev
1GitHub stars
Python wrapper giving Jev long-input support: scores chunks per question, keeps the best within a token budget, marks omissions, and checks sufficiency before answering.
Jev Models & Reimplementations#community#github
Communityavshalomd/longjevPython
clj-jev
1GitHub stars
Clojure client for TypeSafe AI's Jev System One model: send state plus typed questions and get typed answers with probabilities. It does not generate text; a REPL starts with clojure -M:nrepl.
Jev Tools & CLIs#community#github
CommunityTullyStewart/clj-jevClojure
jev-gateway
1GitHub stars
Local HTTP service exposing Jev through the Vercel AI Gateway: projects POST state plus typed questions and get Jev answers with provider metadata, without holding a TypeSafe API key.
Jev Integrations & Adapters#community#github
Communitynitinnat/jev-gatewayJavaScript
typesafe4j
1GitHub stars
Java client for the TypeSafe System One API: send yes/no, choice, and scoring questions in one request and read typed answers with confidence scores and token usage.
Jev Repos & SDKs#community#github
Communityoskarscot/typesafe4jJava
jev-mcp
1GitHub stars
Rust stdio MCP server letting Codex offload bounded judgments to Jev: four tools for yes/no, choice, score, and batch, while Codex keeps investigation, edits, and tests.
Jev Agents & MCP#community#github
Communityieee0824/jev-mcpRust
jev-mcp
1GitHub stars
Community Node.js MCP server exposing Jev as four read-only advisory tools for bounded probabilistic decisions, with the host model keeping final authority over every action.
Jev Agents & MCP#community#github
CommunityAfloat16/jev-mcpTypeScript
typesafe-ai-ruby
1GitHub stars
Ruby gem wrapping the TypeSafe System One API: send state with noul, choice, and score questions from plain hashes and read structured answers with probabilities and confidence.
Jev Repos & SDKs#community#github
Communityhnegishi/typesafe-ai-rubyRuby
laya-pi
1GitHub stars
Self-contained Raspberry Pi 4 stack running Laya System-1 typed decisions fully on CPU: one Docker image serving ONNX and torch backends behind the same `/v1/systemone` protocol.
Jev Models & Reimplementations#community#github
Communitytrinacria-tech/laya-piPython
typesafe-sdk-cpp
1GitHub stars
Unofficial C++23 client for the TypeSafe AI API ported from the community Rust SDK: send named noul, choice, and score questions over `POST /v1/systemone` and read typed answers.
Jev Repos & SDKs#community#github
Communityyunusey/typesafe-sdk-cppC++
Jev-Rubik-Cube-Restoration
1GitHub stars
Repository presenting Rubik's cube restoration with TypeSafe AI's Jev, per its one-line README; no setup, method, or usage details are documented in the digest.
Jev Tools & CLIs#community#github
Communitybhcbhc/Jev-Rubik-Cube-Restoration
jev-reality-check
1GitHub stars
Independent Chinese-language test harness probing Jev `jev-1.13.0` where vendor claims hold and break: program-computed ground truths, recorded confidence and end-to-end latency, stdlib-only Python reruns.
Jev Tools & CLIs#community#github
Communityruffood/jev-reality-checkPython
jev-vphone-cli
1GitHub stars
Virtual-iPhone CLI whose stated goal is handing a booted guest to Jev from a natural-language goal: full VM pipeline plus host control socket with per-action screenshots for AI-driven testing.
Jev Tools & CLIs#community#github
Communitygpazo/jev-vphone-cliSwift
SystemOne-Moderation
1GitHub stars
Go moderation service that returns allow, review, or block with per-class reasons over HTTP or RabbitMQ, backed by Jev with a versioned JSON policy and bearer auth.
Jev Tools & CLIs#community#github
CommunityAliAkbariAlashti/SystemOne-ModerationGo
typesafe-sdk-go
1GitHub stars
Go SDK for TypeSafe AI that sends mixed noul, choice, and score questions in one SystemOne call, with retries, typed errors, and env-based configuration.
Jev Repos & SDKs#community#github
CommunitySergeAx/typesafe-sdk-goGo
jev-expert
0GitHub stars
Claude Code skill documenting Jev typed decisions, calibration quirks, and classify-route-rerank-gate patterns, with a dependency-free Java client and replayable fixtures.
Jev Agents & MCP#community#github
Communityslashdaemon/jev-expertShell
jev_learning
0GitHub stars
Learning log explaining Jev single-pass typed decisions with a ticket-routing example, noting vendor speedup claims as unverified and routing low confidence to a human.
Jev Integrations & Adapters#community#github
Communitybhavishy09/jev_learning
typesafe-ai
0GitHub stars
Independent public-surface profile of TypeSafe AI: System One endpoint shape, OpenAPI, agent card, MCP, skills, SDKs, limits, and security notes, with no software to download.
Jev Agents & MCP#community#github
Communityapi-evangelist/typesafe-ai
meko-jev-code-review-agent
0GitHub stars
Code review demo pairing Jev per-rule yes/no checks with a Meko datapack that stores guidelines, rulings, and decision traces, exempting only the ruled case on re-review.
Jev Agents & MCP#community#github
CommunityYugabyteDB-Samples/meko-jev-code-review-agentPython
GitHub-Issue-Classification-Using-Jev
0GitHub stars
GitHub Action triage that asks eight Jev questions in one call, gates labels in plain Python, and layers regex redaction, a Jev guard battery, and a write guard.
Jev Tools & CLIs#community#github
CommunityKalyanM45/GitHub-Issue-Classification-Using-JevPython
JEV-Prompt-Injection-Guardian
0GitHub stars
TypeScript dashboard that scores prompts with Jev Choice, Score, and Noul, maps scores to block-through-allow actions, and falls back to Gemini or offline heuristics.
Jev Tools & CLIs#community#github
CommunityYuyaForest/JEV-Prompt-Injection-GuardianTypeScript
jev-decision-maker-at-meteora
1GitHub stars
Condor drop-in where Jev Noul fan-out ranks Meteora pools and a Score sizes positions, while math clamps enforce rug cards, cost tiers, dry-run, and one-sided walls.
Jev Agents & MCP#community#github
Communitycedarmuse-creator/jev-decision-maker-at-meteoraPython
All-About-JEV
0GitHub stars
Overview notes on Jev typed Choice, Score, and Noul decisions, hosted-only access via TypeSafe, Vercel, or Cloudflare, with request shapes and routing use cases.
Jev Tools & CLIs#community#github
Communityvardhantech123/All-About-JEV
cda-abm-ai-agents
0GitHub stars
Mesa market testbed pitting zero-intelligence traders against Jev archetype agents, with paired Monte Carlo stats, a live dashboard, and a pre-rendered econometrics notebook.
Jev Agents & MCP#community#github
CommunityJiriNohejl/cda-abm-ai-agentsJupyter Notebook
llm-cost-optimizer-jev
0GitHub stars
Fixture-first LLM router that picks the lowest expected-cost qualified route, verifies output before release, and records cost provenance with idempotency keys.
Jev Tools & CLIs#community#github
Communitylorensation/llm-cost-optimizer-jevPython
trialscout
0GitHub stars
Demo that checks a plain-language cancer profile against recruiting ClinicalTrials.gov eligibility rules with one Jev question per rule, quoting source text.
Jev Tools & CLIs#community#github
Communitytushar-im/trialscoutTypeScript
local-issue-classifier
0GitHub stars
Local-first web app that pulls a repo issues and README, asks Jev to score complexity, criticality, effort and relevance, then sorts and exports.
Jev Models & Reimplementations#community#github
CommunityJeronimoRepetto/local-issue-classifierTypeScript
oido-systemone
0GitHub stars
Local Go server for POST /v1/systemone running MiniCPM5-2B or Qwen3.5-4B in-process, answering in one forward pass with no text generation.
Jev Tools & CLIs#community#github
CommunityDjancyp/oido-systemoneGo
jevons
0GitHub stars
Embeddable System One server matching TypeSafe HTTP shape, scoring LFM2.5-1.2B logits in code with optional Laya and cloud failover.
Jev Models & Reimplementations#community#github
Communitygopalanj/jevonsPython
codriver
0GitHub stars
Per-turn opencode router that asks Jev which fleet model fits the turn, rewriting to that model or falling back on low confidence.
Jev Models & Reimplementations#community#github
Communityjohnpozy/codriverTypeScript
honeytrap
0GitHub stars
Pass-and-play trap game for 2-6 players where Jev picks attack or legit lures across 8 vectors and adapts to each player weak spots.
Jev Demos & Experiments#community#github
CommunityHimanshutadse114/honeytrapJavaScript
tjev
0GitHub stars
Independent Qwen3.5 typed-decision stack in JAX with Pallas TPU kernels, LoRA tuning, per-type calibration, and MLX export.
Jev Tools & CLIs#community#github
Communitytychota/tjevPython
pokemon-showdown-jev-agent
1GitHub stars
Gen 9 Random Battles agent that sends a structured battle view to Jev each turn, validates the legal choice, and shows telemetry on a dashboard.
Jev Demos & Experiments#community#github
CommunityNatBrian/pokemon-showdown-jev-agentJavaScript
typesafe-mario-ai
0GitHub stars
Browser neuroevolution game where flocks evolve to fly through towers with no datasets or backprop, plus human-vs-AI mode and DNA vault.
Jev Demos & Experiments#community#github
CommunityGunaTeja777/typesafe-mario-aiTypeScript

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.