EVERY ENTRY HAS RECEIPTS

AWESOME
JEV

Open-source directory

Every project here really calls Jev in its source · refreshed daily

788projects
182runnable here
765code receipts

▶ RUN IT HERERunnable right here

See all 182 →
src/model.ts
questions: {
  direction: choice,
}
▶ runnable
@jarrodwatts★ 1.4k

jev-trader

One AI trade decision every Monad block. Jev on Kuru MON-USDC.

ApplicationsTypeScript
scripts/jev_probe.mjs
questions: {
  requested: boolean,
  issued: boolean,
  route: choice,
  // +1
}
▶ runnable
@TianyuCodings★ 1.1k

NanoJev

A nano replica of Jev: parallel decisions, dynamic candidates, and an end-to-end training pipeline.

Open reproductionsPython
examples/python/quickstart.py
questions: {
  intent: choice,
  is_urgent: boolean,
  frustration: score,
}
▶ runnable
@Anil-matcha★ 643

awesome-jev-by-typesafe

Evidence-backed use cases, patterns, prompts, and starter code for TypeSafe Jev — a System One model for fast, typed, confidence-aware decisions in software.

Lists & resourcesPython
playground/src/lib/kev.ts
questions: {
  department: choice,
  return_reason: choice,
  requested_resolution: choice,
  // +2
}
▶ runnable
@jaredpalmer★ 617

kev

tiny Jev-like model built on top of Qwen2.5-0.5B you can train and run on your MacBook

Open reproductionsPython
src/review/codebase-judgments.ts
questions: {
  correctness: boolean,
  security: boolean,
  reliability: boolean,
  // +2
}
▶ runnable
@devagrawal09★ 367

jev-review

A staged code-review workflow and local dashboard built with TypeSafe Jev.

Guardrails & reviewTypeScript
scripts/jev-decide.mjs
questions: {
  action: choice,
  done: boolean,
  risk: boolean,
}
▶ runnable
@Sac-Y★ 355

Jev-cu

把 Computer Use 的「下一步点哪里」交给 Jev(TypeSafe System One):Jev 从界面文字候选中选元素、动作、完成度与风险,Codex Computer Use 负责读取界面与执行,本地策略门槛拦截敏感操作。只传文字,不传截图。

SDKs & clientsJavaScript

Want your own questions?

Write your own criteria, options and score levels in the playground, paste some text, and watch Jev decide. 10 free runs a day.

Open the playground →

ALL 788 PROJECTSEvery project

src/model.ts
questions: {
  direction: choice,
}
▶ runnable
@jarrodwatts★ 1.4k

jev-trader

One AI trade decision every Monad block. Jev on Kuru MON-USDC.

ApplicationsTypeScript
scripts/jev_probe.mjs
questions: {
  requested: boolean,
  issued: boolean,
  route: choice,
  // +1
}
▶ runnable
@TianyuCodings★ 1.1k

NanoJev

A nano replica of Jev: parallel decisions, dynamic candidates, and an end-to-end training pipeline.

Open reproductionsPython
examples/python/quickstart.py
questions: {
  intent: choice,
  is_urgent: boolean,
  frustration: score,
}
▶ runnable
@Anil-matcha★ 643

awesome-jev-by-typesafe

Evidence-backed use cases, patterns, prompts, and starter code for TypeSafe Jev — a System One model for fast, typed, confidence-aware decisions in software.

Lists & resourcesPython
playground/src/lib/kev.ts
questions: {
  department: choice,
  return_reason: choice,
  requested_resolution: choice,
  // +2
}
▶ runnable
@jaredpalmer★ 617

kev

tiny Jev-like model built on top of Qwen2.5-0.5B you can train and run on your MacBook

Open reproductionsPython
src/review/codebase-judgments.ts
questions: {
  correctness: boolean,
  security: boolean,
  reliability: boolean,
  // +2
}
▶ runnable
@devagrawal09★ 367

jev-review

A staged code-review workflow and local dashboard built with TypeSafe Jev.

Guardrails & reviewTypeScript
scripts/jev-decide.mjs
questions: {
  action: choice,
  done: boolean,
  risk: boolean,
}
▶ runnable
@Sac-Y★ 355

Jev-cu

把 Computer Use 的「下一步点哪里」交给 Jev(TypeSafe System One):Jev 从界面文字候选中选元素、动作、完成度与风险,Codex Computer Use 负责读取界面与执行,本地策略门槛拦截敏感操作。只传文字,不传截图。

SDKs & clientsJavaScript
website/playground.mjs
questions: {
  refund: boolean,
  spam: boolean,
}
▶ runnable
@featherless-ai★ 312

simple-jev

Turn any open model into a classifier/jev endpoint

InfrastructurePython
src/typesafe_mario/policy.py
questions: {
  next_action: boolean,
  danger: score,
}
▶ runnable
@fhshaik★ 287

typesafe-mario

A TypeSafe/Jev agent that plays Super Mario Bros. from structured emulator state.

Games & simulationPython
test/typesafe.test.ts
questions: {
  window: choice,
  source_reddit: boolean,
  plain: boolean,
}
▶ runnable
@superagents-lab★ 248

jev-search

Search the web with TypeSafe's Jev: source selection, query understanding and relevance ranking. Built with Search1API.

Search & retrievalTypeScript
tests/test_client_with_fake_model.py
questions: {
  positive: boolean,
}
▶ runnable
@typesafe-ai★ 177

system-one-adapter-python

Drop-in TypeSafeClient replacement backed by LLM APIs

OfficialPython
src/typesafe_sdk/_core/client/aio/client.py
questions: {
  billing: boolean,
}
▶ runnable
@typesafe-ai★ 129

typesafe-sdk-python

The official Python library for the TypeSafe API

OfficialPython
src/constants.js
questions: {
  intent: boolean,
  target: boolean,
  site: boolean,
  // +5
}
▶ runnable
@moritzkremb★ 126

jev-voice-browser

Control a real browser by voice. Jev (TypeSafe System One) decides intent + target in ~300 ms per spoken word; Playwright acts — often before you finish the sentence.

Browser & computer useJavaScript
tests/primitives.test.ts
questions: {
  severity: score,
  needs_tool: boolean,
}
▶ runnable
@BillionsBobby★ 94

JevRouter

A lightweight Jev-powered router for models, tools, and subagents

Agent toolingTypeScript
src/gate.ts
questions: {
  destructive: boolean,
  exfiltration: boolean,
  beyond_scope: boolean,
  // +1
}
▶ runnable
@y0usaf★ 93

pi-jev

TypeSafe Jev as a decision layer for the Pi coding agent: a measured tool-call gate plus jev_ask for typed, calibrated answers

Agent toolingTypeScript
test/api.test.ts
questions: {
  urgency: score,
}
▶ runnable
@pithings★ 85

advocaat

A small, type-safe client for asking AI questions about your data, powered by TypeSafe Jev.

SDKs & clientsTypeScript
docs/app.js
questions: {
  queue: choice,
  escalate: boolean,
  urgency: score,
  // +1
}
▶ runnable
@kshetrajna12★ 80

reflex

A small open decision model: state + typed questions -> calibrated probabilities. A Jev / System One re-creation on Qwen3.5.

Open reproductionsPython
tactics.py
questions: {
  risk: score,
}
▶ runnable
@RomanSlack★ 79

jev-drone

Camera-only autonomous drone in MuJoCo with a small judgment model (TypeSafe Jev) in the loop at 2.5Hz

Games & simulationPython
examples/workflows/stale-todo-audit.ts
questions: {
  stale: choice,
}
▶ runnable
@devagrawal09★ 76

stanley-code

Bounded TypeSafe Jev workflows for coding agents.

Agent toolingTypeScript
examples/intent_routing.py
questions: {
  intent: choice,
  needs_reasoning: score,
}
▶ runnable
@wfzyx★ 48

von

The open-source System One decision model. Sub-15ms, non-autoregressive, local drop-in alternative to TypeSafe Jev.

Open reproductionsPython
test/classify.test.js
questions: {
  relevant: boolean,
}
▶ runnable
@kbhuw★ 46

jev-sift

Classify first. Read selectively. A portable agent plugin and MCP tool for batch text classification.

Agent toolingJavaScript
test/client_test.rb
questions: {
  urgent: boolean,
}
▶ runnable
@obie★ 45

ruby_decision_model

Ruby client for decision models such as Typesafe Jev

SDKs & clientsRuby
options.js
questions: {
  ok: boolean,
}
▶ runnable
@RafalWilinski★ 42

vibecheck

Chrome extension: vibe-check your X posts with TypeSafe's Jev before you hit Post

ApplicationsJavaScript
app/services/typesafe_service.py
questions: {
  sentiment_spectrum: score,
  catalyst_impact: score,
}
▶ runnable
@brainstormity★ 41

Jev-X-Sentiment-Analysis

An on-demand crypto market intelligence and decision-support terminal powered by TypeSafe AI's System One model (Jev).

ApplicationsPython
packages/api/examples/benchmark.ts
questions: {
  refund: boolean,
}
▶ runnable
@iammrduncan★ 32

typesafe-ai-benchmark

This is a LLM Gateway that mimics typesafe ai structured output. Like an imposter Jev.

InfrastructureTypeScript
examples/m3_typesafe_sdk_demo.py
questions: {
  department: choice,
  urgent: boolean,
  frustration: score,
}
▶ runnable
@deepanwadhwa★ 29

OpenDecision

OpenDecision is an open-source semantic decision engine like typesafe's jev.

Open reproductionsPython
src/router.py
questions: {
  intent: choice,
  reuse_cache: boolean,
  needs_subagent: boolean,
  // +2
}
▶ runnable
@Bodila51★ 25

grok-bot-jev

Connect TypeSafe Jev to Grok Bot as a cheap decision layer - usage gates, skill template, examples

Agent toolingPython
src/mcp/tools.test.ts
questions: {
  refund: boolean,
  team: choice,
}
▶ runnable
@tacticocc★ 25

Jevbridge

ACP and MCP adapter that bridges TypeSafe Jev with any LLM — computer use and typed decisions alongside Codex, Claude, Grok, and OpenCode.

Agent toolingTypeScript
src/jev-connection.ts
questions: {
  next_reference: choice,
}
▶ runnable
@AlbionaHoti★ 23

refgarden

A spatial reference explorer for creators. Local Jev query choices, metadata highlights and source-linked collections.

ApplicationsTypeScript
src/lib/questions.ts
questions: {
  problem: score,
  customer: score,
  demand: score,
  // +5
}
▶ runnable
@monteduro★ 21

killmyidea

Describe your startup idea. Jev decides: kill it, fix it or ship it.

ApplicationsTypeScript
scripts/benchmark.mjs
questions: {
  ok: boolean,
}
▶ runnable
@burnigtm★ 19

jev-mcp

MCP server that puts TypeSafe Jev on the coding loop in Cursor, Codex, and any MCP client

Agent toolingTypeScript
src/context.ts
questions: {
  r0_missing: boolean,
  r0_instruction: boolean,
}
▶ runnable
@compozy★ 18

yoshi

Context-pruning proxy for Claude Code and Codex: Jev judges which history is still needed, measured not claimed. POC here now, heading soon into https://github.com/compozy/compozy

Context engineeringTypeScript
src/commands.ts
questions: {
  is_billing: boolean,
  category: choice,
}
▶ runnable
@TheoOliveira★ 18

pi-jev

Semantic tool routing and typed System One decisions for the Pi coding agent using TypeSafe Jev

Agent toolingTypeScript
experiments/browser-chaos/src/jev-driver.ts
questions: {
  stuck: boolean,
  destructive: boolean,
}
▶ runnable
@mizchi★ 17

jev-playground

TypeSafe AI の System One モデル Jev を MoonBit から触るためのプレイグラウンド。

Benchmarks & researchTypeScript
src/recipes/questions.ts
questions: {
  injection: boolean,
  hidden: boolean,
  exfiltration: boolean,
  // +3
}
▶ runnable
@shiftynick★ 17

jev-axi

Agent-ergonomic CLI for TypeSafe's Jev: fast calibrated judgments (pick, rate, check, rank, triage, guard) from the shell

SDKs & clientsTypeScript
src/constants.js
questions: {
  intent: boolean,
  target: boolean,
  site: boolean,
  // +5
}
▶ runnable
@brudarko★ 16

jev-mac-voice

English full-duplex voice control for macOS with OpenAI Realtime, native Accessibility, and Jev.

ApplicationsJavaScript
desktop/test/chat-user-input-prompt.test.tsx
questions: {
  questions: boolean,
}
▶ runnable
@CheshiAI★ 16

Cheshi

Jev-powered conversation memory: find past sessions and revisit decisions with original sources. A macOS workspace for OpenAI Codex. Manage AI conversations and agents, explore code with CodeGraph, and work with Git, Ghostty terminals, and Apple Notes in one app.

ApplicationsC
tools/verify_api.py
questions: {
  binary: boolean,
  rating: score,
}
▶ runnable
@Argos1111★ 15

jev_local

Replicating Jev with a local LLM

Open reproductionsPython
lib/jev-chat/engine.ts
questions: {
  conflict: boolean,
}
▶ runnable
@TypeSafeAI★ 14

typesafe-playground

Community TypeSafe AI playground: 110 use cases, games, dilemmas and model challenges, with editable prompts, A/B comparisons and a mobile-friendly UI.

ApplicationsTypeScript
tests/jev.test.ts
questions: {
  s0: boolean,
  s1: boolean,
}
▶ runnable
@wobsoriano★ 14

oxlint-plugin-jev

Lint rules written in plain English. Oxlint finds the code, TypeSafe Jev answers the question.

Guardrails & reviewTypeScript
scripts/check-provider.mjs
questions: {
  color: choice,
}
▶ runnable
@jcpsimmons★ 13

jev-macos-loop

Open-source macOS AI computer use and native GUI automation on Apple silicon. Jev + OmniParser CoreML + Apple Vision OCR. Bring your own OpenRouter, Vercel AI Gateway, or TypesafeAI token.

Browser & computer useJavaScript
src/evals/judges/system_one.py
questions: {
  does_pass: boolean,
}
▶ runnable
@danielgshea★ 12

jev-as-a-judge

Using Jev as an evaluator.

Benchmarks & researchPython
src/lib/analyze.ts
questions: {
  value: choice,
  surprising: boolean,
  funny: boolean,
  // +4
}
▶ runnable
@sensahin★ 12

transcript-lens

YouTube transkriptlerini anlamına göre keşfedin. Türkçe arayüz, Jev analizi, altyazı dışa aktarma ve Vercel kurulum rehberi.

ApplicationsTypeScript
src/mario_jev/policy.py
questions: {
  movement: choice,
  start_jump: boolean,
  ceiling_hop: boolean,
  // +1
}
▶ runnable
@shantanugoel★ 12

mario-jev

A uv-managed Python prototype that plays NES Super Mario Bros. (level 1-1 by default).

SDKs & clientsPython
src/jev_game_lab/smoke.py
questions: {
  action: choice,
  in_danger: boolean,
  threat: score,
}
▶ runnable
@Eniip★ 11

jev-game-tools

Experiments in driving real-time games with TypeSafe Jev: a fast

SDKs & clientsPython
data/jev-guide.js
questions: {
  amount_disclosed: boolean,
}
▶ runnable
@everyai-com★ 11

jev-directory

A browsable directory of what Jev can do — 50 runnable

Lists & resourcesHTML
src/guard.js
questions: {
  directed: boolean,
  kind: choice,
}
▶ runnable
@leepokai★ 11

jev-guard

Auto mode for every coding agent, built on Jev: risk-scores every tool call with session context (deny / ask / allow), flags prompt injection in results, checks skills and plugins. Claude Code, Codex, Copilot, Gemini, Cursor, pi, OpenCode, ACP.

Agent toolingJavaScript
scripts/smoke.ts
questions: {
  is_urgent: boolean,
  department: choice,
  frustration: score,
}
▶ runnable
@Brainwires★ 10

jevwire

Jev decision layer for agents: MCP server, embeddable DecisionModel library, and an escalate-only Claude Code plugin (TypeSafe AI's Jev)

Agent toolingTypeScript
demo01/questions.mjs
questions: {
  team: choice,
  human_requested: boolean,
  refund_requested: boolean,
  // +3
}
▶ runnable
@kavehmz★ 10

typesafe-playground

Interactive experiments with TypeSafe Jev, from support routing to 3D driving simulations with real AI decisions and visible sensor inputs.

Games & simulationJavaScript
test/jev.test.ts
questions: {
  skill: choice,
}
▶ runnable
@madeye★ 10

pi-jev

Jev-assisted file retrieval and request caching for faster Pi workflows

Agent toolingTypeScript
src/classifier.js
questions: {
  route: choice,
}
▶ runnable
@socai-io★ 10

jev-social

Jev-powered Instagram, TikTok, and LinkedIn research: typed routing, real browser evidence, streamed post cards, video capture, and cited socai reports.

ApplicationsJavaScript
scripts/probe-jev-input-size.mjs
questions: {
  noul: boolean,
}
▶ runnable
@tyler-dot-earth★ 10

patdown

typesafe's jev as a "fuzzy linter". give your code an ocular patdown.

Guardrails & reviewTypeScript
public/js/brain.js
questions: {
  lane_action: choice,
  speed_action: choice,
  hazard: score,
  // +1
}
▶ runnable
@vinilana★ 10

live-jev

2D autonomous car simulation in the browser, driven by TypeSafe's Jev decision model

Games & simulationJavaScript
tests/live_scoring.mjs
questions: {
  route: choice,
  urgent: boolean,
  severity: score,
}
▶ runnable
@pst2154★ 9

Nemotron_Jev

Nemotron Diffusion Decision Lab

InfrastructureHTML
belay.mjs
questions: {
  claims_done: boolean,
  claims_verified: boolean,
  verification_applies: boolean,
  // +1
}
▶ runnable
@valentynkit★ 9

jev-belay

Claude Code Stop hook that blocks an unverified done: reads the transcript for evidence, asks Jev once, fails open on everything else

Agent toolingJavaScript
extensions/eutrya-adaptive-extension/src/router.mjs
questions: {
  route: choice,
  toolFree: boolean,
}
▶ runnable
@hellozenstrategist-lab★ 8

eutrya

Jev-native AI security harness for autonomous research, multi-agent swarms, persistent hunt boards, and long-running agent workflows. CLI-first, open source, and built for authorized security research.

Benchmarks & researchJavaScript
extensions/quiet-ask/packs/intent.ts
questions: {
  intent: boolean,
}
▶ runnable
@HyunjunJeon★ 8

pi-quiet-ask

TypeSafe Jev as the pi coding agent's quiet decision layer

Agent toolingTypeScript
extension/background.js
questions: {
  intent: choice,
  rage_bait: boolean,
  synthetic: boolean,
  // +1
}
▶ runnable
@manifoldor★ 8

xtags

在 X 的时间线上,给每条帖子标出它想让你干什么。判断来自 Jev,一个只返回概率、不生成文本的模型。

ApplicationsJavaScript
skills/jevlogs/examples/measured-evaluator.ts
questions: {
  actionable: boolean,
  priority: choice,
  value: score,
}
▶ runnable
@reachjalil★ 8

jevlogs

Open-source Jev log triage for OpenTelemetry. Score the signal before expensive LLM analysis.

Context engineeringTypeScript
test/backends.test.ts
questions: {
  is_bug: boolean,
  team: choice,
  urgency: score,
}
▶ runnable
@shitianfang★ 8

jev-use

Claude Code / Codex / pi plugin that hands agent steps needing no text output to Jev (TypeSafe's judgment model) — measured p50 ~230 ms and ~$0.02 per 1,000 judgments, with typed escalation back to the LLM

Agent toolingJavaScript
examples/python/01_routing_triage.py
questions: {
  topic: choice,
}
▶ runnable
@aliaihub★ 7

awesome-jev-usecases

Evidence-backed use cases, patterns, and guidance for building with Jev, TypeSafe AI's System One model. Every claim is labeled and sourced.

Lists & resources
src/lib/classify.ts
questions: {
  category: choice,
  urgency: score,
  isPersonal: boolean,
}
▶ runnable
@fazlerocks★ 7

jevmail

Open-source AI email triage for Gmail. Sorts your inbox into Needs reply, Updates, Promos, Sales and Spam with Jev, TypeSafe AI's decision model, via Vercel AI Gateway. Read-only, runs locally, 1,000 emails in about a minute for 3 cents.

ApplicationsTypeScript
src/cascade-evaluator.test.ts
questions: {
  unambiguous_match: boolean,
}
▶ runnable
@jekhov★ 7

jekhov

Policy-bounded Jev target selection for resilient Playwright workflows

Browser & computer useTypeScript
tests/cache-identity.test.ts
questions: {
  call_t1: boolean,
}
▶ runnable
@jerryfane★ 7

omp-jev-compaction

Verbatim Jev-scored context reduction for omp, over TypeSafe or OpenRouter

Context engineeringTypeScript
scripts/demo.mjs
questions: {
  intent: choice,
  isUrgent: boolean,
}
▶ runnable
@matthewp★ 7

flue-jev-demo

Flue agent routing with TypeSafe Jev through Cloudflare AI Gateway

Agent toolingTypeScript
tests/test_with_model.py
questions: {
  a: boolean,
  b: boolean,
}
▶ runnable
@aabolfazl★ 6

typesafe-local

Inspired by TypeSafe Ai, Ask a local LLM typed questions, get calibrated probabilities instead of text. Structured output without generation or parsing. MLX / Apple Silicon.

Benchmarks & researchPython
src/typesafe_ai_basic/test_basic.py
questions: {
  billing: boolean,
  urgency: score,
}
▶ runnable
@GiesN★ 6

typesafe-jev-workflow

A small async LangGraph workflow that sends a mocked email to TypeSafe's Jev model,

SDKs & clientsPython
src/guard.ts
questions: {
  context_needed: choice,
}
▶ runnable
@harshwasan★ 6

pi-jev-sentinel

Pi coding-agent extension: TypeSafe Jev checks for tool calls, tool outputs and replies (prompt injection, approvals, secret scrubbing, task pinning)

Agent toolingTypeScript
src/jgrep.test.ts
questions: {
  beauty: boolean,
  cat: choice,
}
▶ runnable
@kyu1204★ 6

jgrep

grep for what code does, not what it's called. Semantic code search powered by TypeSafe Jev.

Search & retrievalTypeScript
extension/background.js
questions: {
  irreversible: boolean,
  goal_done: boolean,
}
▶ runnable
@ranjan2829★ 6

AskJev

AskJev — Jev autopilot for any website + guard on irreversible clicks (TypeSafe System One, not Claude)

Browser & computer useTypeScript
tests/clients/test_jev.py
questions: {
  partial: boolean,
  score: boolean,
}
▶ runnable
@agent-labs-dev★ 5

fastbrowse

A fast browser agent: Jev picks each action from what is on the page, an LLM reads and plans, and every claim in an answer cites a quote from the page.

Browser & computer usePython
test/tool.test.js
questions: {
  urgent: boolean,
}
▶ runnable
@arunav25★ 5

jev-mcp

Connect JEV to MCP clients and compare its judgments against general-purpose LLMs using shared datasets and measurable accuracy.

Benchmarks & researchJavaScript
defaults.js
questions: {
  category: choice,
  tech: boolean,
  ai_written: boolean,
}
▶ runnable
@bohutang★ 5

sift

Chrome extension that labels every post on X (Substance · Humor · Chit-chat · Promo · Junk · AI-written) with TypeSafe Jev, and hides the ones you don't want.

ApplicationsJavaScript
test/jev-pin.test.ts
questions: {
  q1: boolean,
}
▶ runnable
@Kevthetech143★ 5

super-jev

A small, extensible decision-to-action harness for TypeSafe Jev

Agent toolingPython
tests/test_client.py
questions: {
  is_spam: boolean,
}
▶ runnable
@Kiln-AI★ 5

jev_jsonschema

Run a JSON Schema through TypeSafe's Jev API, and get JSON back.

SDKs & clientsPython
src/decisions.ts
questions: {
  instructions: boolean,
}
▶ runnable
@thejorgg★ 5

omp-jev

TypeSafe Jev routing for Oh My Pi, with an opt-in checkpoint orchestrator and editable XDG configuration. Requires Bun = 1.3.14 and OMP = 18.2.3.

Benchmarks & researchTypeScript
index.js
questions: {
  odd: boolean,
}
▶ runnable
@alxcrt★ 4

is-odd-jev

Check whether a number is odd, using a System One model, with a calibrated probability.

SDKs & clientsJavaScript
server/pilot.ts
questions: {
  throttle: choice,
  yaw: choice,
  pitch: choice,
  // +3
}
▶ runnable
@arielweinberger★ 4

jev-autopilot

This demo uses Jev from TypeSafe AI to autonomously fly a drone in a random city from point A to point B, avoiding obstacles along the way. A trip costs $0.01.

Games & simulationTypeScript
src/spam.ts
questions: {
  unsolicited_promotion: boolean,
  profile_bait: boolean,
  scam_or_phishing: boolean,
  // +5
}
▶ runnable
@backmeupplz★ 4

jev_antispam_bot

Minimal grammY Telegram anti-spam bot powered by TypeSafe Jev

Guardrails & reviewTypeScript
scripts/test_live_e2e.ts
questions: {
  operation: choice,
}
▶ runnable
@chy4pro★ 4

jev-for-chrome

Jev for Chrome: drives the tab you are looking at with TypeSafe Jev, a sub-second decision model. Community port of browser-use/jev-ultrafast, not affiliated with TypeSafe.

Browser & computer useTypeScript
scripts/score-sources.ts
questions: {
  about: boolean,
  keep: choice,
}
▶ runnable
@daftAI2026★ 4

awesome-jev

TypeSafe System One / Jev community directory — GitHub projects & posts around typed decisions (typesafe.ai)

Lists & resourcesTypeScript
src/lib/examples.ts
questions: {
  is_spam: boolean,
  folder: choice,
  suspicion: score,
}
▶ runnable
@davila7★ 4

jev-explained

Jev Explained

ApplicationsTypeScript
service/jev.mjs
questions: {
  connected: boolean,
}
▶ runnable
@Devin-AXIS★ 4

jev-dsh-decision

Jev DSH 决策引擎|面向 Agent Harness 的结构化决策插件。原生支持 DeepSeek Harness,通过 iPolloWork 支持 OpenCode、Codex Harness。

Agent toolingJavaScript
test/loop.test.js
questions: {
  operation: choice,
  click_target: choice,
  goal_reached: boolean,
  // +1
}
▶ runnable
@forvela★ 4

jev-agent-browser

Fast, bounded browser agents powered by Jev and agent-browser — typed actions, research, classification, and safe orchestration.

Browser & computer useJavaScript
test/typesafe/sdk/client_test.rb
questions: {
  department: boolean,
  frustration: boolean,
}
▶ runnable
@joshmn★ 4

typesafe-sdk

Ruby client for typesafe.ai

SDKs & clientsRuby
examples/sglang_inference.py
questions: {
  delivery: boolean,
  department: choice,
  urgency: score,
}
▶ runnable
@Yinsongxu★ 4

LLM2Jev

Adapt local language models into Jev-compatible structured decision engines with Choice, Score, and Noul outputs powered by prefill-only binary inference.

SDKs & clientsPython
src/jevchat/state.py
questions: {
  done: boolean,
}
▶ runnable
@adhyaay-karnwal★ 3

jev-chat

A chatbot from typed Jev decisions: hierarchical speculative decoding over System One probabilities.

Benchmarks & researchPython
examples/standalone-game/src/index.ts
questions: {
  is_impossible: boolean,
}
▶ runnable
@buberlo★ 3

dsh-jev

Jev-powered decision layer for DeepSeek Harness

Agent toolingTypeScript
tests/typesafe-jev.test.ts
questions: {
  is_urgent: boolean,
  frustration: score,
}
▶ runnable
@buchmark★ 3

claude-jev

Claude Code plugin that scores review findings, debug hypotheses and design options with TypeSafe's Jev — calibrated probabilities instead of one more opinion.

Agent toolingTypeScript
test/key.test.mjs
questions: {
  is_urgent: boolean,
}
▶ runnable
@cyberofficial★ 3

dsh-plugin-jev

Agent-facing TypeSafe Jev (System One) for the DSH Web GUI. The model itself

Agent toolingJavaScript
examples/contrast.mjs
questions: {
  routine: boolean,
}
▶ runnable
@EugeneBoondock★ 3

jevsql

SQL with natural-language predicates, powered by TypeSafe's Jev. Filter, rank, classify and score rows by meaning — batched, cached and cost-guarded.

Search & retrievalJavaScript
background.js
questions: {
  automated: boolean,
}
▶ runnable
@goncy★ 3

quiet-replies

A small Chrome extension that marks or collapses likely AI-written replies on X, powered by Jev.

ApplicationsJavaScript
jev-browse.mjs
questions: {
  done: boolean,
  blocked: boolean,
}
▶ runnable
@kyrylosyzonenko★ 3

jev-browse

jev-browse is an unofficial project and isn't affiliated with TypeSafe or Vercel.

Benchmarks & researchJavaScript
src/constants.js
questions: {
  intent: boolean,
  target: boolean,
  site: boolean,
  // +5
}
▶ runnable
@mstf-svndk★ 3

jev-windows-voice

Türkçe ve İngilizce doğal konuşmayla Windows 10/11 bilgisayar kontrolü: OpenAI Realtime, local Whisper, Jev, UI Automation ve Playwright.

Browser & computer useJavaScript
scripts/live-smoke.ts
questions: {
  department: choice,
  frustration: score,
  is_urgent: boolean,
}
▶ runnable
@noetion★ 3

dsh-jev

DSH bundle that registers jev_ask for TypeSafe Jev noul, choice, and score answers.

SDKs & clientsTypeScript
src/tools.ts
questions: {
  instructions: boolean,
}
▶ runnable
@Nyarlathoteppppp★ 3

pi-heed

Runtime constraints for the pi coding agent: checks every side-effecting tool call against what you said, before it runs. Powered by TypeSafe Jev.

Guardrails & reviewTypeScript
spec/jevalyn/cassette_spec.rb
questions: {
  urgent: boolean,
}
▶ runnable
@Ray-Hughes★ 3

jevalyn

The decision layer for your Rails app. A Rails-native wrapper around TypeSafe's Jev System One API: typed, calibrated decisions in your control flow.

SDKs & clientsRuby
web/home.js
questions: {
  what: choice,
}
▶ runnable
@4anti★ 2

jev-broadcast-lab

Operator lab for TypeSafe Jev. Chess Arena, closed-schema booths, Stockfish HUD for review only.

Benchmarks & researchJavaScript
src/ui/options.js
questions: {
  t: boolean,
}
▶ runnable
@abhixhek★ 2

feedwall

Your feed, your rules, in plain English. A browser extension that filters X, YouTube, Reddit, LinkedIn and Hacker News with topics you write yourself. Bring your own Jev key.

ApplicationsJavaScript
src/routing-policy.ts
questions: {
  model: choice,
  effort: choice,
  is_followup: boolean,
}
▶ runnable
@adarshmishra07★ 2

jcm-router

Local proxy that picks the Claude model and effort per message using TypeSafe Jev. Routes subagents, leaves your cached main chat alone.

InfrastructureTypeScript
hooks/suggest.ts
questions: {
  needs_skill: boolean,
}
▶ runnable
@BeLazy167★ 2

typesafe-mod

Claude Code mod that routes decisions to TypeSafe's Jev model: ranks installed skills per prompt, and answers the agent's own this-or-that questions when confident.

Agent toolingTypeScript
server/classification.ts
questions: {
  confidentiality: choice,
}
▶ runnable
@Charlyhno-eng★ 2

jev-document-classification

JEV Document Classification enables the rapid and cost-effective classification of text-based documents using AI, leveraging TypeSafe's "System One" model.

Search & retrievalTypeScript
src/jev/compare.ts
questions: {
  comparison: choice,
}
▶ runnable
@christian-taillon★ 2

opencode-jev-compactor

Jev powered OpenCode compaction

Context engineeringTypeScript
jev-moderation.ts
questions: {
  blocking: boolean,
}
▶ runnable
@CodeAlive-AI★ 2

mastra-jev-moderation

Input moderation for Mastra agents on TypeSafe Jev — one file

Guardrails & reviewTypeScript
experiments/probe.py
questions: {
  department: choice,
}
▶ runnable
@FirasSX914★ 2

Janus

Measure when to use Jev and other models on your data, then route accordingly.

Benchmarks & researchPython
src/jev_mobile/providers/jev.py
questions: {
  content_type: choice,
}
▶ runnable
@Friedjof★ 2

jev-mobile

Fast structured Android control loops with TypeSafe Jev and Mobile MCP

Browser & computer usePython
shared/questions.js
questions: {
  is_command: boolean,
  complete: boolean,
}
▶ runnable
@gaborishka★ 2

jev-canvas

Draw on a tldraw canvas with your voice and a pointing finger. Jev (TypeSafe System One) decides action, target and place in ~350 ms per spoken word.

ApplicationsJavaScript
scripts/test_official_jev.py
questions: {
  department: choice,
  frustration: score,
  is_urgent: boolean,
}
▶ runnable
@GPT-AGI★ 2

OpenJev

Jev-compatible System 开源Jev

Open reproductionsPython
src/jev_system_one/jev.py
questions: {
  requires_uncertainty_notice: boolean,
  response_depth: score,
}
▶ runnable
@haseeb-heaven★ 2

jev-system-one

A polished OpenAI + TypeSafe Jev terminal interface for answers with transparent decision reports

SDKs & clientsPython
functions/api/verdict.js
questions: {
  verdict: choice,
  should: boolean,
  doom: score,
  // +1
}
▶ runnable
@hellogumbo★ 2

should-ai-kill-us-all

We ask Jev, TypeSafe AI's System One model, whether AI should kill us all. Every ten minutes. Using the actual headlines.

ApplicationsJavaScript
python/tiershift/signals.py
questions: {
  difficulty: score,
  needs_reasoning: boolean,
  stakes: score,
  // +5
}
▶ runnable
@iamvatsalpatel★ 2

tiershift

Shift every LLM call to the cheapest model that can handle it. Routing decided by TypeSafe Jev in ~180 ms. No training data. Policy in plain YAML. TypeScript and Python.

InfrastructureTypeScript
source/jev-workflows/src/contracts.ts
questions: {
  category: choice,
  reached_assertion: boolean,
  missing_context: boolean,
}
▶ runnable
@integrate-your-mind★ 2

jev-codex-plugin

Open-source Codex plugin for TypeSafe Jev decision consultation, failure diagnosis, and evidence-based completion review

Agent toolingJavaScript
demo/js/client-screener.js
questions: {
  is_toxic: boolean,
  is_profane: boolean,
  severity: score,
  // +2
}
▶ runnable
@ItisShikhar★ 2

gg-friggin-ez

Fast, drop-in profanity and toxicity screener for Node.js, powered by TypeSafe AI Jev. Catches leetspeak, character spacing, and romanized profanity across languages including Kannada, Telugu, Tamil, Hindi, and Bengali. ~50-500ms latency.

Guardrails & reviewTypeScript
router.mjs
questions: {
  complexity: score,
  needsPlanning: boolean,
}
▶ runnable
@jcpsimmons★ 2

jev-model-router-demo

Throwaway Jev demo: route coding tasks to Grok Build or Codex Astra

Agent toolingJavaScript
tests/failure.test.ts
questions: {
  ping: boolean,
}
▶ runnable
@konstantinosbotonakis★ 2

codex-context-diet

Codex plugin: Jev-guided dieting of bulky tool results

Context engineeringTypeScript
src/eval/builtin.ts
questions: {
  task_completion: score,
  instruction_following: boolean,
  grounded_in_evidence: boolean,
  // +5
}
▶ runnable
@memovai★ 2

openevals

Affordable for parallel online agent evals and observability. Powered by JEV.

Benchmarks & researchTypeScript
apps/web/src/snippets.ts
questions: {
  is_billing: boolean,
}
▶ runnable
@molis-ai★ 2

jev-workbench

Build versioned judgment functions on TypeSafe's Jev once, then call the same published version from your backend over HTTP and from coding agents over MCP. The vendor key stays on your machine.

InfrastructureTypeScript
core/typesafe.ts
questions: {
  complete: boolean,
}
▶ runnable
@NobleSpartan6★ 2

otto

Open-source native computer use for macOS and Windows: TypeSafe Jev, local OCR, and selective planning.

Browser & computer useTypeScript
packages/decision-provider/test/openrouter.live.test.ts
questions: {
  wants_refund: boolean,
  intent: choice,
}
▶ runnable
@omkarghugarkar007★ 2

actiongate-jev

Runtime authorization and guardrails for AI-agent tool calls with deterministic policy and TypeSafe Jev via OpenRouter.

Guardrails & reviewTypeScript
src/llm/layaConstants.js
questions: {
  operation: choice,
}
▶ runnable
@prateekmedia★ 2

ly

Manipulate images via chat, uses Jev like model to classify prompt

ApplicationsJavaScript
src/policy.ts
questions: {
  destructive: boolean,
  exfiltration: boolean,
  privilege: boolean,
  // +4
}
▶ runnable
@RiskAverseTech★ 2

toolgate

Open auto mode for AI agents — a calibrated tool-call firewall powered by TypeSafe Jev. Ships as a Claude Code hook

Agent toolingTypeScript
src/diffusion_jev/benchmark_cases.py
questions: {
  enabled: boolean,
  color: choice,
  progress: score,
}
▶ runnable
@Saik0s★ 2

diffusiongemma-jev-macos

Local JEV-style decisions with DiffusionGemma on Apple Silicon, with benchmarks and coding-agent examples.

Open reproductionsPython
skills/tenbin/templates/questions.py
questions: {
  category: choice,
  bug_severity: score,
  has_repro_steps: boolean,
  // +2
}
▶ runnable
@simota★ 2

tenbin

MCP server and agent skill for the TypeSafe AI System One API (Jev): decompose a judgment into Choice / Score / Noul questions, lint them, measure on labelled data, and put calibrated thresholds in code

Agent toolingTypeScript
examples/doom/server/src/session-jev-trace.test.ts
questions: {
  action: choice,
}
▶ runnable
@superradcompany★ 2

multiverse-of-madness

Jev and Microsandbox explore alternate game futures with a reusable TypeScript learning harness

Benchmarks & researchTypeScript
scripts/probe-jev.ts
questions: {
  content_type: choice,
  already_known: boolean,
  insight_density: score,
}
▶ runnable
@ThinkyMiner★ 2

Winnow

Know before you click. A Chrome extension that reads articles and YouTube videos ahead of you and says read, skim, save, or skip — with a confidence, tuned to your goals. Open source, MV3, powered by Jev.

ApplicationsTypeScript
src/completion.ts
questions: {
  completion: choice,
}
▶ runnable
@tontoko★ 2

jev-browser

One grounded Jev/Playwright core: typed SDK, persistent CLI, and MCP server with native browser operations and deterministic assertions.

Browser & computer useJavaScript
test/gateway.test.ts
questions: {
  relevant: boolean,
  category: choice,
}
▶ runnable
@tonyzdev★ 2

pijev

PiJev: a terminal coding agent with Jev in the loop — Jev ranks the repository's files before the first call, picks skills and triages failures; your coding model writes the code. Built on Pi.

Agent toolingTypeScript
src/app/docs/page.tsx
questions: {
  hallucination_sensitive: boolean,
}
▶ runnable
@tylerjharden★ 2

ailerix

Type-safe model router. Jev (System One) banks each request to a typed catalog route.

InfrastructureTypeScript
agent/extensions/lib/jev-client.ts
questions: {
  ping: boolean,
}
▶ runnable
@yunusemrejr★ 2

yunuspi

Yunus Pi is a heavily customized harness experience built on top of a forked Pi harness (pi.dev). It uses patches, extensions, skills, and custom provider configs to customize the overall experience. It uses advanced machine learning, Jev, Cactus Needle 3 and similar technologies.

Agent toolingJavaScript
src/service-worker.js
questions: {
  criteria: boolean,
}
▶ runnable
@aadhil-kh★ 1

jevx

Jev-powered Chrome extension that categorizes X posts and classifies replies in context.

ApplicationsJavaScript
src/opensmoke/questions.py
questions: {
  claims_success: boolean,
}
▶ runnable
@aaravriyer193★ 1

OpenSmoke

Find the AI agent runs that broke because their environment did: missing keys, tools, files, permissions, network, or context. Powered by TypeSafe Jev.

ApplicationsPython
src/gateway.mjs
questions: {
  label: choice,
}
▶ runnable
@acoyfellow★ 1

nightglass

Owned, deterministic classifier for checking whether agent claims are supported by evidence, with optional Jev comparison through Cloudflare AI Gateway.

Benchmarks & researchJavaScript
shell_guard/shell_guard.py
questions: {
  irreversible: boolean,
}
▶ runnable
@adtyavrdhn★ 1

pydantic-jev-examples

Pydantic AI capabilities made stronger with Jev: small runnable demos, one file each

Lists & resourcesPython
tests/test_core.py
questions: {
  composition: choice,
  legibility: boolean,
}
▶ runnable
@andrueandersoncs★ 1

visual-jev

Image-native typed decisions with shared visual encoding and Qwen3-VL

Open reproductionsPython
firewall/judge.py
questions: {
  is_urgent: boolean,
  severity: score,
}
▶ runnable
@AnshChoudhary★ 1

typesafe-ai-firewall

Shadow-mode validation harness for a pre-execution firewall on AI agent tool calls (TypeSafe/Jev). Real run, findings in report.md.

Benchmarks & researchPython
src/jev/real.ts
questions: {
  action: choice,
  asset: choice,
  condition_operator: choice,
}
▶ runnable
@axiomarchitecture★ 1

axiom-agent-runtime

Reference prototype exploring agentic commerce: TypeSafe/Jev → Axiom → Argent → Silverscript on Kaspa.

Agent toolingTypeScript
probe.mjs
questions: {
  tier: choice,
  is_greeting: boolean,
}
▶ runnable
@az9713★ 1

jev-model-router

Jev (TypeSafe) model router on the Vercel AI Gateway

InfrastructureJavaScript
public/world.mjs
questions: {
  line: choice,
  pace: choice,
  overtake: boolean,
  // +1
}
▶ runnable
@bchaney★ 1

jev_speedway

Uses jev to control race cars on a virtual track

Games & simulationJavaScript
scripts/smoke.ts
questions: {
  severity: score,
  area: choice,
}
▶ runnable
@BYK★ 1

jev-mcp

An eval-first MCP server for TypeSafe's Jev, a System One model that returns typed judgments (noul, choice, score) with probabilities instead of generated text.

Agent toolingTypeScript
test/adapters.test.ts
questions: {
  destructive: boolean,
  secrets: boolean,
}
▶ runnable
@clownware★ 1

bouncer

Jev-powered Judgment layer for Claude Code. Stops paying reasoning prices for if-statements: a PreToolUse hook scores every tool call against a YAML policy you own — allow / deny in ~100 ms, no LLM in the loop. TypeSafe Jev now, local models next. Dry-run by default, calibration table published.

Agent toolingTypeScript
.claude/hooks/warden.js
questions: {
  is_exquisite_and_dynamic: boolean,
  animation_verdict: choice,
  primary_deficiency: choice,
}
▶ runnable
@connectedGraph★ 1

claude-jev-warden

Real-time quality gate and Art Director Warden for Claude Code powered by TypeSafe Jev 1.13 non-autoregressive decision model

Agent toolingHTML
src/gate.ts
questions: {
  person_name: boolean,
  email_or_phone: boolean,
  postal_address: boolean,
  // +5
}
▶ runnable
@coo-quack★ 1

jev-pii-checker

CLI that finds PII in text with TypeSafe Jev: presence, sensitivity, and located spans

SDKs & clientsTypeScript
experiments.py
questions: {
  is_regulation: boolean,
  mentions_deadline: boolean,
  mentions_fines: boolean,
  // +5
}
▶ runnable
@copyleftdev★ 1

jev-labs

Never confidently wrong: a TLA+-verified consensus kernel around TypeSafe's Jev, run through 1,680 chaos-tested pharmacy decisions with zero wrong verdicts. Film, code, and every captured call.

Benchmarks & researchPython
packages/lab/src/scenarios.ts
questions: {
  topic: choice,
  requests_credentials: boolean,
  sender_identity_mismatch: boolean,
  // +4
}
▶ runnable
@danielhirt★ 1

jev-lab

Experiments on TypeSafe Jev (System One decision model) via OpenRouter: repeatability, perturbation, and LLM baseline comparison

Benchmarks & researchTypeScript
lib/review.ts
questions: {
  needs_rewrite: boolean,
  visual: choice,
}
▶ runnable
@eachann1024★ 1

pi-jev-reply

Pi extension: clearer replies via Jev review + optional rewrite/visuals

Agent toolingTypeScript
main.py
questions: {
  states_application_instruction: boolean,
}
▶ runnable
@ekkyarmandi★ 1

jev-upwork-job-classification

Upwork job classification example

Search & retrievalPython
src/jev/real.test.ts
questions: {
  a: boolean,
  b: boolean,
}
▶ runnable
@elpumberto★ 1

barrunto

A Chrome extension that brings TypeSafe's Jev to X.com to analyze posts as you browse

ApplicationsTypeScript
scripts/jev-probe.ts
questions: {
  is_urgent: boolean,
  department: choice,
}
▶ runnable
@emirbartu★ 1

opencode-system-one

Opencode plugin using Jev (system one model) as part of software development process. Not affiliated with Opencode team.

Agent toolingTypeScript
src/safe_sh/__init__.py
questions: {
  file_removal: score,
  credential_theft: score,
  data_exfiltration: score,
  // +5
}
▶ runnable
@EpicEric★ 1

safe-sh

Static shell script analysis with Jev.

Guardrails & reviewNix
src/jev_awesome/classification/typesafe_adapter.py
questions: {
  kind: choice,
  relationship: choice,
  review_priority: score,
}
▶ runnable
@fanly★ 1

Jev-awesome

面向开发者的 Jev / TypeSafe 精选:说明每个项目里 Jev 负责哪一步、先读哪段源码、需要什么依赖,以及哪些结论还没有运行验证。

Lists & resourcesPython
test/jev.test.mjs
questions: {
  uses: boolean,
}
▶ runnable
@fatwang2★ 1

jev-review-action

Configurable GitHub submission review and PR classification with TypeSafe Jev. No text-generation model.

Guardrails & reviewJavaScript