Sep 18, 2026 · awesomejev.com
488 projects built on Jev, indexed and refreshed daily Browse ↓

Community directory Not affiliated with TypeSafe AI

Everything
Built On Jev

Repos, SDKs, integrations, demos and benchmarks for TypeSafe AI's System One model. Stars refreshed daily from GitHub.

488 Entries,
21,644 Stars.

*406 GitHub repos, 123 live sites, 48 articles and threads. Refreshed 2026-09-18.

JEV · SPEC SHEETv1.13
modeljev-latest
endpointPOST https://api.typesafe.ai/v1/systemone
inputstate + typed questions, evaluated in parallel
outputtyped answers, per-option probabilities, confidence
latency70–500 ms end to end (per TypeSafe)
pricing$0.042 / MTok input · output free
sdksjs · python · ai gateway · community below
PRIMITIVES3
choicepick one option from a list → choice, probabilities, confidence
scorerate the state on a rubric → score, probabilities, confidence
noulis this statement true? → noul (0–1)
import { choice, TypeSafeClient } from "@typesafe-ai/sdk";

const client = new TypeSafeClient();
const response = await client.systemOne({
  state: { document: "I was charged twice. Please fix this ASAP." },
  questions: {
    category: choice("What is this ticket about?", {
      billing: null,
      technical: null,
      other: null,
    }),
  },
});

console.log(response.answers.category.choice);
FILTER488 shown
01 · Official19 entries

Docs, SDKs, and resources from TypeSafe AI.

ProjectDescriptionLangStarsLinks
TypeSafe AI Company homepage, waitlist, and product overview.
Documentation Introduction, primitives, patterns, cookbooks, HTTP API, and SDK references.
Quick start Shortest path from an API key to a typed decision.
Playground Paste a state, add questions, and see typed answers in the browser.
HTTP API reference Request and response contract for POST /v1/systemone.
Primitives Choice, Score, and Noul: the three question types and what they return.
Patterns Speculative fan-out, confidence-gated routing, composite scoring, and intent routing.
Cookbooks Reproducible recipes: parallel questions, reranking, guardrails, citation checks, extraction, hierarchical classification.
Smart home demo Official interactive demo of speculative fan-out: many questions in one call, code keeps the relevant answers.
Workflow evals Published eval methodology and per-model results for System One workflows.
Jev 1.13 jaggedness Known failure modes of the current public model, documented by TypeSafe.
Introducing System One Models and Jev Launch post: architecture, RLCD training, pricing, Doom and Wikiracing demos, FAQ.
Manifesto The case for machine-native intelligence built for software, not conversation.
Discord Official TypeSafe server. Builder demos live in the Show and Tell channel.
@typesafeai on X Product and research updates.
TypeSafe agent skillstypesafe-ai Official agent skill for Claude Code, Codex, and compatible agents: primitives, patterns, and how to structure evaluations. ★ 205
TypeSafe JavaScript SDKtypesafe-ai Official TypeScript/JavaScript client with inferred answer types. npm install @typesafe-ai/sdk. TypeScript ★ 114
System One adapter (Python)typesafe-ai Official drop-in TypeSafeClient replacement backed by OpenAI, Anthropic, and compatible LLM APIs, for comparing Jev against chat models. Python ★ 108
TypeSafe Python SDKtypesafe-ai Official sync and async Python client. pip install typesafe-sdk. Python ★ 80
02 · SDKs & clients40 entries

Community clients for languages without an official SDK.

ProjectDescriptionLangStarsLinks
advocaatpithings A small, type-safe client for asking AI questions about your data, powered by TypeSafe Jev. TypeScript ★ 66
jev (dannote)dannote TypeSafe Jev for OTP: reply to Jev from a GenServer and pattern match on its answer. Elixir ★ 11
typesafe-aiTwister915 Typed TypeSafe AI clients for Rust, with async and blocking backends and observable retries. Rust ★ 7
typesafe-sdk-go (Tangerg)Tangerg Go SDK for the TypeSafe AI API — typed questions in, probability distributions out. Go ★ 7
zod-jevjomatsu Zod validates the shape, Jev validates the meaning: semantic checks on request bodies become calibrated probabilities you threshold in code. TypeScript ★ 6
super-jevKevthetech143 A small, extensible decision-to-action harness for TypeSafe Jev. Python ★ 5
typesafe-dotnet-sdksaibimajdi Community .NET SDK for the TypeSafe AI System One API — typed noul, choice, and score questions with structured, confidence-scored answers. Not affiliated with TypeSafe AI. C# ★ 5
jev-dslinanna-malick Agent-first Haskell DSL for TypeSafe's Jev judgment model: typed packets, inferred types, answers under the same labels. Haskell ★ 4
typesafe-sdk (joshmn)joshmn Ruby client for typesafe.ai. Ruby ★ 4
jev-javaOlti1947 Idiomatic Java SDK for TypeSafe AI Jev System One decision engine. Java ★ 3
jodmateonunez Semantic schemas over TypeSafe's Jev — validate the state locally, then project typed answers. TypeScript ★ 3
typesafe-ai-rsgilljon Independent async and blocking Rust SDK for the TypeSafe AI System One API. Rust ★ 3
typesafe_sdknshkrdotcom An idiomatic, type-safe Elixir port of the official TypeScript AI SDK (ai / ai-sdk) providing unified LLM integrations, streaming text and structured outputs, tool calling, and agentic workflows. Jev is their current flagship model and is the first System One model. Elixir ★ 2
typesafe-go (cole-gillespie)cole-gillespie Unofficial go SDK for typesafe AI, with typed answers, retries, and context support. Go ★ 2
typesafe-sdk-javaPremo-Cloud Community Java client for the TypeSafe System One API (unofficial). Java ★ 2
typesafe-sdk-swiftInsaneArts Swift SDK for TypeSafe AI. Swift ★ 2
TypeSafeAI.NetHawxy .NET SDK for the TypeSafe AI platform. C# ★ 2
zio-typesafe-aijamesward Scala 3 / ZIO client for the System One API: typed end-to-end, several questions per round-trip via NamedTuple. Scala ★ 2
jev-go (Gaurav-Gosain)Gaurav-Gosain Go client for TypeSafe's System One API and its model Jev: typed judgments and calibrated probabilities instead of generated text. Go ★ 1
jev-go (guillemus)guillemus Unofficial Go SDK for TypeSafe AI's Jev API. Go ★ 1
jevclientAboveColin Async Python client for TypeSafe Jev. Typed questions in, probabilities and choices out, no prose to parse. Python ★ 1
jevgofgn Go client for TypeSafe AI's System One API (Jev), with optional Langfuse instrumentation. Go ★ 1
typesafe-clientJedimEmO Unofficial typed async Rust client for the TypeSafe System One API. Rust ★ 1
typesafe-sdk-rustcodeitlikemiley Rust SDK for the TypeSafe AI API. Rust ★ 1
typesafeai-gochez-shanpu Go SDK for TypeSafe AI API https://docs.typesafe.ai/api. Go ★ 1
decidoyairshy Probabilistic decisions for Python. Use Jev or bring your own provider; crawl with Playwright. Python ★ 0
jevanilsenay Unofficial Go client for TypeSafe's System One API and its model, Jev. Go ★ 0
kunobi-jevkunobi-ninja Rust client for the TypeSafe System One API (Jev). Rust ★ 0
s1-rsAbdelStark Typed System One layer for Rust (Choice/Score/Noul). Rust ★ 0
tinyjevclienttinyhumansai An integration with jev by typesafe.ai in Rust. Rust ★ 0
typesafemattneel An idiomatic Elixir client for the TypeSafe AI API. Elixir ★ 0
typesafe_ai (hfiguera)hfiguera A supervised Mint client for the TypeSafe AI System One API. Elixir ★ 0
typesafe_ai (typesend)typesend Unofficial Elixir SDK for the TypeSafe AI API. Elixir ★ 0
typesafe_sdk_exvinnie357 Typesafe AI SDK in Elixir using Req. Elixir ★ 0
typesafe-go (zhirschtritt)zhirschtritt Idiomatic Go SDK for the TypeSafe AI API. Go ★ 0
typesafe-rsAbdelStark Latency-first Rust SDK for TypeSafe System One. Rust ★ 0
typesafe-sdk (binnash)binnash PHP & Laravel SDK for TypeSafe AI's JEV Model series. PHP ★ 0
typesafe-sdk-govalksor Unofficial Go SDK for the TypeSafe AI System One API — 1:1 parity with the official JS and Python SDKs. Not affiliated with TypeSafe AI. Go ★ 0
typesafe-sdk-phpvalksor Unofficial PHP SDK for the TypeSafe AI System One API — 1:1 parity with the official JS and Python SDKs. Not affiliated with TypeSafe AI. PHP ★ 0
typesafe.zigmattneel An idiomatic Zig client for the TypeSafe AI API. Zig ★ 0
03 · Integrations25 entries

Jev inside frameworks, gateways, and platforms.

ProjectDescriptionLangStarsLinks
evevercel Vercel's open agent framework, which ships Jev as the default evaluation model in its experimental evaluate path. TypeScript ★ 5,253
ai-clivercel-labs Vercel Labs terminal CLI that can run Jev as the evaluation model for its evaluate command. TypeScript ★ 796
pg-jevrealZachi Ask your Postgres tables questions in plain language. A PostgreSQL extension powered by TypeSafe's Jev. Python ★ 141
jev-shell-historymrnugget Fish-style zsh history autosuggestions ranked by Jev (TypeSafe). TypeScript ★ 27
Lokiwundercorp Self-improving agent harness with an optional TypeSafe Jev companion for typed Choice, Score, and Noul judgments. Python ★ 23
neo4jevjexp Typesafe.ai System One Model Jev navigating a Neo4j graph by using a classifier over neighbouring relationships. Jupyter Notebook ★ 17
ruby_llm-typesafekieranklaassen TypeSafe structured-output provider for RubyLLM 2. Ruby ★ 11
HA-JevAboveColin Home Assistant integration for TypeSafe Jev. Ask a question about your house and get a probability, a choice or a score as an entity. Python ★ 6
pg_typesafegiuliosmall Pre-alpha PostgreSQL extension for TypeSafe AI (Jev) categorical classification. C ★ 5
a0-typesafe-ai3clyp50 TypeSafe AI Jev judgments for Agent Zero, with typed tools and probability cards. Python ★ 4
typesafe-jev-workflowGiesN Async LangGraph workflow that gets a typed Jev Choice (invoice or general) and routes each inbound email to the matching handler. Python ★ 4
typesafe-on-neonandrelandgraf Neon Function proxy for the Neon AI Gateway with TypeSafe Jev routing. TypeScript ★ 3
laravel-typesafe-jevButochnikov Unofficial Laravel integration for TypeSafe Jev AI with typed responses, async requests, scoped dependency injection, and testing fakes. PHP ★ 2
llama-index-jevWiktorB2004 LlamaIndex reranker + router powered by TypeSafe Jev — typed scores/choices, cheaper than LLM-as-judge. Python ★ 2
judging-with-typesafecarlsonchik Скилл для агентов Letta: суждения по критериям через TypeSafe System One (Jev). Python ★ 1
pydantic-jev-examplesadtyavrdhn Pydantic AI capabilities made stronger with Jev: small runnable demos, one file each. Python ★ 1
typesafe-ai-railsGenieRobot Community Rails integration on the typesafe-sdk gem: configuration, persisted usage and cost telemetry, and opt-in confidence policies. Ruby ★ 1
typesafe-assistJanOstrowka Home Assistant Assist conversation agent powered by TypeSafe's Jev (System One) model. Python ★ 1
agentgateway Jev guardrail example Jev as an LLM prompt guardrail inside the agentgateway proxy, with tracing and cost tracking. TypeScript
Jev on Vercel AI Gateway Hosted typesafe-ai/jev for AI SDK evaluate calls, no TypeSafe waitlist required.
Jev4MelleaSoundBlaster Jev adapter to Mellea. Python ★ 0
n8n-nodes-typesafe-aiDomMonte N8n community node for the TypeSafe AI System One API — typed yes/no, choice and score questions with calibrated probabilities. TypeScript ★ 0
TrainLCD Jev rerank Pull request adding Jev to station-suggestion reranking in the TrainLCD transit app. TypeScript
typesafe-uiBunsDev Shadcn-style reusable components and blocks for using TypeSafe AI. TypeScript ★ 0
Vercel AI SDK provider @ai-sdk/typesafe-ai plus experimental_evaluate; use jev-latest as an evaluation model.
04 · Agent tooling87 entries

Gates, routers, reviewers, MCP servers, and skills for coding agents.

ProjectDescriptionLangStarsLinks
fast-jev-compactiontamaratran Claude Code plugin that replaces the compaction summary with Jev decisions: every tool call and result is scored in one fast request, stale ones are dropped or truncated, everything kept stays verbatim. TypeScript ★ 2,735
foremanthruwire Software Factory Foreman: an agent supervisor that uses Jev decisions to keep coding agents on task. Python ★ 276
jev-review (devagrawal09)devagrawal09 A staged code-review workflow and local dashboard built with TypeSafe Jev. TypeScript ★ 247
pi-jev (y0usaf)y0usaf TypeSafe Jev as a decision layer for the Pi coding agent: a measured tool-call gate plus jev_ask for typed, calibrated answers. TypeScript ★ 130
jev-router (gargpratyush)gargpratyush Route to the cheapest model in claude code for your task using jev-router. JavaScript ★ 120
jev-review (NiazMorshed2007)NiazMorshed2007 Local-first MCP plugin for continuous software-quality review by AI coding agents, powered by Jev. TypeScript ★ 113
building-with-jev-skilldbreunig A skill for writing and improving programs that call Jev, TypeSafe's System One model. ★ 81
jev-mcp (jkudish)jkudish Proof of concept MCP for Typesafe's new Jev AI model. TypeScript ★ 69
typesafe-mcpitsmostafa Go CLI and single-binary MCP server exposing TypeSafe judgments to Claude Desktop, Claude Code, and Codex. Go ★ 62
pi-wardenDevMortimer Guardrails for Pi built on pi-typesafe that steer the agent instead of interrupting you: Jev judges irreversible and off-task tool calls, detects stuck loops, checks unverified done claims, flags slop. TypeScript ★ 61
jev-searchsuperagents-lab Search the web with TypeSafe's Jev: source selection, query understanding and relevance ranking. Built with Search1API. TypeScript ★ 44
skillrankerDicklesworthstone Rust CLI powered by Jev from TypeSafe.ai that ranks agent skills for the next step using live session context. Includes Claude Code hooks, structured JSON, abstention, and local feedback. Requires a TypeSafe API key. Rust ★ 43
jev-codex-router0xNatoshi Per-turn model & reasoning routing for Codex, driven by Jev (TypeSafe System One): picks the model, thinking depth and speed mode for every turn. Python ★ 27
ask-jev-skillshantanugoel Skill for Hermes, and other agents, to ask typesafe's jev. Python ★ 26
hono-jev-routeryusukebe Route HTTP requests by meaning. A semantic router for Hono powered by Jev. TypeScript ★ 21
winnowGhalebDweikat A calibrated context sieve for Claude Code: every tool result is judged by a System One model before it enters context. Python ★ 13
jev-axishiftynick Agent-ergonomic CLI for TypeSafe's Jev: fast calibrated judgments (pick, rate, check, rank, triage, guard) from the shell. TypeScript ★ 12
yoshicompozy 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. TypeScript ★ 10
pi-jev-auto-modejomatsu Jev (TypeSafe System One) backed auto mode for the Pi coding agent: semantically auto-approves bash, write, and edit tool calls and fails closed when a decision cannot be made. TypeScript ★ 9
jev-mcp (blakestone-x)blakestone-x MCP server for TypeSafe Jev: typed classify, score, check, match and screen for any agent, with confidence on every answer. Python ★ 7
JevLinthuntedman Configurable semantic linting powered by Jev, with file-level NOUL judgments and a magic-strings plugin. TypeScript ★ 7
jev-codedevagrawal09 Bounded TypeSafe Jev workflows for coding agents. TypeScript ★ 6
pi-jev (TheoOliveira)TheoOliveira Semantic tool routing and typed System One decisions for the Pi coding agent using TypeSafe Jev. TypeScript ★ 6
pi-jev-routermejiasd3v Automatic model routing for Pi using TypeSafe's Jev through Vercel AI Gateway. JavaScript ★ 6
snifftestDanRWilloughby A prose linter that sniffs out AI writing tells. Zero dependencies, countable rules plus one judgment model. TypeScript ★ 6
typesafe-skill-routerDECRUX9812 TypeSafe (Jev) skill routing for Hermes Agent: names the one skill worth loading, before the model call. Opt-in, stdlib only, ~$0.001 per routed turn. Python ★ 6
jev-agent-skill-routerGodsBoy Typed, confidence-aware agent skill routing with TypeSafe Jev. Python ★ 5
jev-mcp (arunav25)arunav25 Connect JEV to MCP clients and compare its judgments against general-purpose LLMs using shared datasets and measurable accuracy. JavaScript ★ 5
JevRouterBillionsBobby A lightweight Jev-powered router for models, tools, and subagents. TypeScript ★ 4
jevwireBrainwires Jev decision layer for agents: MCP server, embeddable DecisionModel library, and an escalate-only Claude Code plugin (TypeSafe AI's Jev). TypeScript ★ 4
clean-code-reviewfrostney Every code file in a pull request, judged against Uncle Bob's Clean Code by TypeSafe's Jev, then reviewed by Luna. Built on eve and Next.js. TypeScript ★ 3
diffjuryraihankhan-rk DiffJury — TypeSafe Jev PR risk router + code review coach. TypeScript ★ 3
hermes-jevkeeltrace Typed System One decisions, ranking, verification, and an opt-in Hermes tool gate using TypeSafe Jev. Python ★ 3
hermes-jev-approvalsanpicasso PoC: TypeSafe Jev as the reviewer for Hermes Agent smart command approvals. 8.7x faster, 4.4x fewer prompts, measured on 153 real commands. Approvals only. Python ★ 3
jev (BorisLeMeec)BorisLeMeec A claude code plugin for jev. Go ★ 3
jevexjvsteiner Minimal agent loop where Jev directs control flow and a LangChain chat model writes argument values and the final response. Python ★ 3
pi-quiet-askHyunjunJeon TypeSafe Jev as the pi coding agent's quiet decision layer. TypeScript ★ 3
riffscale-venture-partners A small, fast prose linter: ruff-style rule codes for writing, backed by TypeSafe's Jev model. Python ★ 3
slidepilotharshil1712 Voice-driven semantic auto-advance for Slidev, powered by Cloudflare Agents and TypeSafe AI Jev. TypeScript ★ 3
typesafe-cli (geilt)geilt CLI and agent skill for TypeSafe System One (Jev): typed Choice, Score, and Noul judgments. Python ★ 3
ailerixtylerjharden Type-safe model router. Jev (System One) banks each request to a typed catalog route. TypeScript ★ 2
bicameralAbdelStark Hybrid coding harness: System 2 writes, System 1 (Jev) runs reflexes. TypeScript ★ 2
fast-dev-compactionleonaaardob Codex plugin: verbatim Jev-guided context restoration around session compaction. Port of tamaratran/fast-jev-compaction to Codex lifecycle hooks. TypeScript ★ 2
jcm-routeradarshmishra07 Local proxy that picks the Claude model and effort per message using TypeSafe Jev. Routes subagents, leaves your cached main chat alone. TypeScript ★ 2
jev-guardleepokai Prompt-injection and dangerous-action guard for coding agents (Claude Code, Codex, pi, ACP), powered by Jev. JavaScript ★ 2
jev-judgmentHyunjunJeon Agent Skill: send closed coding-agent judgments to TypeSafe Jev. Python ★ 2
jev-mcp (rashedInt32)rashedInt32 MCP server exposing TypeSafe Jev as typed, calibrated judgment tools: classify, score, check, batched ask. Ships as a Claude Code plugin. TypeScript ★ 2
jev-shieldcaiovicentino Semantic MCP firewall powered by Jev — screens every tool call, tool result, and tool description with calibrated System One verification. 94% block recall, 0 false positives, ~$0.00002/check. JavaScript ★ 2
jev-skill-gateShivamPansuriya Cut Claude Code's skill manifest by ~75% with TypeSafe Jev. Scores every installed skill for relevance and hides the rest via skillOverrides — 12,750 → 3,185 tokens on a 217-skill install, for $0.0009 a session. JavaScript ★ 2
jev-system-architectsamtay32 System-architecture skill for TypeSafe AI Jev/System One — find fuzzy semantic judgment and turn it into small Choice/Score/Noul primitives. ★ 2
jev-workbenchmolis-ai 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. TypeScript ★ 2
jgrepkeltokhy Grep, but the pattern is a description. Filters lines by meaning with TypeSafe's Jev decision model: ~200 ms and a thousandth of a cent per line. Python ★ 2
omp-jev-compactionjerryfane Verbatim Jev-scored context reduction for omp, over TypeSafe or OpenRouter. TypeScript ★ 2
pi-fast-jev-compactionjoelhooks Pi extension: verbatim context compaction with TypeSafe Jev decisions. TypeScript ★ 2
pi-heedNyarlathoteppppp Runtime constraints for the pi coding agent: checks every side-effecting tool call against what you said, before it runs. Powered by TypeSafe Jev. TypeScript ★ 2
skill-routerlomeshdutta Tell Claude Code which installed skill a session needs, using Jev (TypeSafe AI) for the decision and skills.sh for discovery. Python ★ 2
tiershiftiamvatsalpatel 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. TypeScript ★ 2
todo-jevmaker-KK ⚡ Ultra-fast, low-cost intelligent task classifier and 3-tier routing engine powered by TypeSafe Jev (System One). Python ★ 2
typesafe-migration-guardopaielsheikh Automated database migration safety reviewer powered by TypeSafe AI (Jev System One model). TypeScript ★ 2
typesafe-modBeLazy167 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. TypeScript ★ 2
Antigravity-mcp-semantic-search-with-TypeSafeAigreenyamao Fast semantic code search & diff sanity auditor for AI coding assistants (Antigravity, Cursor, Claude Code) powered by TypeSafe System One. Python ★ 1
ask-jevomni- Utilizing Jev, the RLCD-type model provided by TypeSafe AI, to independently and cheaply judge agentic coding sessions. PowerShell ★ 1
is-maliciousluantak Scans a codebase for covert, deceptive, or data-stealing behavior with Jev, then reports suspicious files and line ranges before the user runs it. TypeScript ★ 1
jev-cli (Nasrallah-AL)Nasrallah-AL Command-line tool for TypeSafe's Jev AI model. TypeScript ★ 1
jev-mcp (burnigtm)burnigtm MCP server that puts TypeSafe Jev on the coding loop in Cursor, Codex, and any MCP client. TypeScript ★ 1
jev-predict-skillDanielKillenberger Predict another skill's next closed decision with TypeSafe Jev — without running that skill. HTML ★ 1
jev-router (prismhq)prismhq Open-source LLM router that uses TypeSafe's Jev to pick a model, on top of LiteLLM. Python ★ 1
jev-skillfulbestagentkits Per-prompt capability router for coding agents: resolves installed skills, MCP servers, agents and commands against your prompt via TypeSafe Jev, and measures whether the injection actually helps. TypeScript ★ 1
limpetnoplan-inc A Stop hook that stops your coding agent from stopping too early. Plain-language rules, judged by jev. Python ★ 1
omp-typesafesiddicky TypeSafe AI (Jev) adversarial reviewer and typesafe_ask tool for the omp coding agent. TypeScript ★ 1
agent-gate-loopRipwords Reusable GitHub Action: agent fix loop gated by checks, an AI reviewer, and TypeSafe Jev. TypeScript ★ 0
agent-handoff-gatezsoXi Experimental protocol for evidence-aware agent handoffs, with Jev-assisted review before results reach the lead agent. Python ★ 0
check-riskmoezubair A CLI and GitHub Action that assesses code-change risk using deterministic rules and TypeSafe Jev, recommending checks and reviewers before merge. TypeScript ★ 0
frostmarcus A flexible and configurable CLI model router using TypeSafe Jev. Go ★ 0
hermes-jev-routerussyverse Experimental Hermes plugin: Jev-assisted model routing plans with budget and capability constraints. API access pending. Python ★ 0
jev-builder-looprainbowpuffpuff Grok skill: Jev as a judgment sensor in a builder-agent loop (priors × probabilities → next act). Python ★ 0
jev-review (thiago-ss)thiago-ss Autonomous Jev pull-request review with typed decisions, calibrated approval gates, and trusted-owner escalation. Python ★ 0
jev-triagecephalization Uses typeful jev, zero sync to pull and sync large repositories for issue triage. TypeScript ★ 0
omp-jevens-classifierSTRML Jev-powered model-judged permission gate for OMP (TypeSafe System One). TypeScript ★ 0
pi-agent-foremanalexshpunt Send Pi agents back to work when they stop before the job is done. TypeScript ★ 0
pi-jev-codeKamilPostrozny Single-agent Pi coding coprocessor with Jev semantic gates, baseline-to-current diff review, and append-only observability telemetry. TypeScript ★ 0
pi-typesafetwilwa Pi coding-agent extension built on the TypeSafe AI System One API (Jev). TypeScript ★ 0
pi-typesafe-jevlegacybridge-tech A pi extension that exposes TypeSafe (Jev, System One) judgments as five pi tools, so a model can make narrow semantic judgments while your code and your users keep control of thresholds, weights, and actions. TypeScript ★ 0
switchboardaniruddh-krovvidi Guardrail + model router for LLM gateways on TypeSafe's Jev (System One model), with an independent accuracy/calibration/latency evaluation. Stdlib Python. Python ★ 0
typesafe-demo-mcpbestagentkits MCP server exposing TypeSafe System One judgments (noul, choice, score) as agent tools. TypeScript ★ 0
typesafeai-reviewrbalch Using Typesafe.AI to generate diff reviews. Python ★ 0
zcode-jevZahrannnn Typed judgment layer for coding agents — gates from PRD to ship. Jev-ready, provider-agnostic. TypeScript ★ 0
05 · Browser & computer use34 entries

Browser, desktop, and mobile automation with Jev choosing the action.

ProjectDescriptionLangStarsLinks
Jev Ultrafastbrowser-use Browser Use's ultrafast agent: Jev picks the operation and DOM element in one request; a small LLM only writes text when typing is needed. Python ★ 4,799
typesafe-computer-useawlevin Computer use for about $0.0002 a step: OCR the screen, classify the next action with TypeSafe, click. macOS. Python ★ 202
mobile-jevdroidrun Standalone Android agent for Mobilerun where Jev makes every decision, with a live React studio and an Uber demo. JavaScript ★ 99
jev-browserjkudish Browser use using Typesafe's Jev model. TypeScript ★ 78
unclutterkitze WXT browser extension: Jev-powered page clutter removal with reusable template rules. TypeScript ★ 68
typesafe-adblockrealZachi 🧹 Fun project: a Chrome extension that asks a tiny AI decision model (TypeSafe Jev) "is this DOM element an ad?" and pops it off the page. BYOK, no backend, not a real ad blocker. JavaScript ★ 48
jev-browser-usewy-coliney 5–10x faster browser operations: Jev clicks, Codex thinks and verifies. Built at EZCollegeApp. JavaScript ★ 38
jev-voice-browsermoritzkremb 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. JavaScript ★ 37
Jevbridgegamesonrblx ACP and MCP adapter that bridges TypeSafe Jev with any LLM — computer use and typed decisions alongside Codex, Claude, Grok, and OpenCode. TypeScript ★ 13
vibecheckRafalWilinski Chrome extension: vibe-check your X posts with TypeSafe's Jev before you hit Post. JavaScript ★ 10
jev-browser (Ying-Kai-Liao)Ying-Kai-Liao Browser automation where an LLM plans and Jev (Typesafe System One) decides. Library, CLI and MCP server. JavaScript ★ 9
xtagsmanifoldor 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。 JavaScript ★ 4
jev-browser (vinilana)vinilana Hybrid browser harness: an LLM turns goals into verifiable subgoals, Jev chooses each action and DOM field, Playwright acts. TypeScript ★ 3
live-jevvinilana 2D autonomous car simulation in the browser, driven by TypeSafe's Jev decision model. JavaScript ★ 3
AskJevranjan2829 AskJev — Jev autopilot for any website + guard on irreversible clicks (TypeSafe System One, not Claude). TypeScript ★ 2
computer_usepaulsmith MacOS computer use driven by Jev (TypeSafe System One) as the decision maker. Go ★ 2
jev-browser (tontoko)tontoko One grounded Jev/Playwright core: typed SDK, persistent CLI, and MCP server with native browser operations and deterministic assertions. JavaScript ★ 2
jev-egoromaluev TypeScript browser agent for ego lite: Jev Ultrafast indexed actions, TypeSafe Jev decisions, persistent observe/act CLI. No Chrome or Playwright. TypeScript ★ 2
jev-frontend-qaNainish-Rai Evidence-driven frontend QA built on Jev Ultrafast and Browser Harness, with a synthetic todo demo. Python ★ 2
jev-shield (vmendes90)vmendes90 Privacy-first Chrome extension that semantically blocks native ads, sponsored feed cards, and video ads using TypeSafe Jev. TypeScript ★ 2
almond-fastlooperiestra Almond-fastloop: Almond's browser computer-use rig (Chrome DevTools + TypeSafe Jev), and the Browser Use Olympics benchmark it is measured on. HTML ★ 1
barruntoelpumberto A Chrome extension that brings TypeSafe's Jev to X.com to analyze posts as you browse. TypeScript ★ 1
jev-browsekyrylosyzonenko Drives a real browser with Jev making every decision and Vercel's agent-browser performing every action, with a benchmark. JavaScript ★ 1
ottoNobleSpartan6 Open-source native computer use for macOS and Windows: TypeSafe Jev, local OCR, and selective planning. TypeScript ★ 1
psearchkomikat Parallel web search for terminals and agents, with local Chromium and Jev-guided exploration. Python ★ 1
browser-use-olympicseriestra Browser Use Olympics by Almond: one prompt, five events, one clock. Plus fast loop, a ~200-line browser computer-use agent (Chrome DevTools + TypeSafe Jev). HTML ★ 0
jev-browser (KesavanKing)KesavanKing Local browser automation UI that uses TypeSafe Jev to choose bounded page actions and a text model only for field values. Python ★ 0
jev-browser (MahmoudAdelbghany)MahmoudAdelbghany Jev-powered browser MCP for LLM agents — ~300ms decisions, no LLM tokens in the loop. Benchmark vs Playwright MCP included. JavaScript ★ 0
jev-mobileFriedjof Fast structured Android control loops with TypeSafe Jev and Mobile MCP. Python ★ 0
jev-playwright-mcpkrw82 Jev-augmented Playwright MCP proxy — page-state triage, prompt-injection shielding, goal-based snapshot pruning, risky-action gating. Drop-in wrapper around @playwright/mcp for any coding agent. TypeScript ★ 0
JevTestCorieW Bounded exploratory browser testing with Jev, deterministic assertions, and replayable evidence. TypeScript ★ 0
sifttylergibbs1 Chrome extension that re-ranks Google results with TypeSafe Jev and folds away sales pages and SEO filler. TypeScript ★ 0
sloppy-jevs-extensionneddes Open-source Chrome extension that filters AI-generated prose and ads with Jev. JavaScript ★ 0
turbosightmap Jev-powered semantic browser use. Go ★ 0
06 · Applications45 entries

Products, tools, and pipelines that call Jev.

ProjectDescriptionLangStarsLinks
jev-traderjarrodwatts One AI trade decision every Monad block. Jev on Kuru MON-USDC. TypeScript ★ 794
notrausenotra Marketing analytics platform whose feature flag routes brand-visibility classifiers off an LLM and onto Jev boolean decisions. TypeScript ★ 171
jevmeterChetasLua Put a live Jev (TypeSafe) meter on any video: every sentence scored, rendered as a 16:9 edit. Python ★ 52
Jev-Moderation-Botbrainstormity Real-time Discord moderation bot: Jev evaluates messages and metadata in parallel to catch phishing, spam, and social engineering with a progressive escalation ladder. Python ★ 25
commit-minerdevanshbatham Classify Git commit diffs and messages with Jev. Bug fixes, security fixes/CWEs, and change types. Rust ★ 21
blinkellipsis-dev Codebase search powered by Jev from @typesafe-ai. TypeScript ★ 15
Jev-Tradeszadescoxp Trading bot with the all new TypeSafe AI's first system one model named as Jev. Python ★ 7
jevlogsreachjalil Open-source Jev log triage for OpenTelemetry. Score the signal before expensive LLM analysis. TypeScript ★ 7
ai-elo-rankeropaielsheikh High-speed recursive AI Elo tournament engine powered by Jev and Swiss matchmaking. Python ★ 5
semdecidesharziki Typed semantic decisions for Unix pipelines and CI, powered by TypeSafe AI Jev. Python ★ 5
refgardenAlbionaHoti A spatial reference explorer for creators. Local Jev query choices, metadata highlights and source-linked collections. TypeScript ★ 4
typesafe-cli (y0usaf)y0usaf Ask Jev typed questions from the shell: noul, choice, and score answers as numbers, not prose. TypeScript ★ 4
jev-grugmkotlikov Helping JEV speak <3. TypeScript ★ 3
jev-tradeaowang-ai Live Jev trader on Hyperliquid. TypeScript ★ 3
everysufianetaouil Ask a yes/no question of every function in a codebase. Ranked answers in seconds, for cents. Grep whose pattern is a question, powered by TypeSafe Jev. Python ★ 2
jev-cli (tumf)tumf Small dependency-free CLI for TypeSafe Jev. Python ★ 2
jev-treereachjalil Recursive Jev choice over a taxonomy. Select from more than 255 options without breaking TypeSafe Jev's choice cap. TypeScript ★ 2
jevibe-checksriganesh A live tone labeler for Bluesky posts and drafts, using TypeSafe's Jev API. JavaScript ★ 2
jevocksunicodeveloper Everyday Stocks Status with Jev. TypeScript ★ 2
jevsqlEugeneBoondock SQL with natural-language predicates, powered by TypeSafe's Jev. Filter, rank, classify and score rows by meaning — batched, cached and cost-guarded. JavaScript ★ 2
smart-switchreycn Reimagined window switcher for macOS using frontier artificial intelligence. Predicted by TypeSafe's Jev model. Swift ★ 2
btc-jev-signalWebGrga Experimental multi-horizon BTC signal generator using TypeSafe Jev probabilities and Binance market data. TypeScript ★ 1
commentcopntedvs Put your code comments on trial. Powered by Jev. TypeScript ★ 1
JackalopeJackalope-Dev Desktop GUI for agentic coding that routes tasks across local agents and accounts, with Jev picking the best agent per task, running basic code-review checks, and supplying context. Rust ★ 1
jev-clijtsang4 CLI for TypeSafe AI's Jev evaluation model — typed questions in, structured JSON answers out. TypeScript ★ 1
jev-rerankhev Use Jev (TypeSafe's System One model) as a calibrated reranker: one call, up to 30 documents, a probability per document. Apache-2.0. Python ★ 1
qualmqddegtya Typed decisions from a System One model. An uncertain answer is a different type from a confident one — and the compiler makes you handle it. TypeScript ★ 1
typesafe-jevgtaras7 Screen a folder of CVs with the TypeSafe Jev decision model: typed judgments, an editable policy, free re-scoring. TypeScript ★ 1
citation-verifierMarissaFamularo Check whether each cited paper supports the sentence citing it. Claude proves the quote, TypeSafe's Jev scores it, a human decides. JavaScript ★ 0
dmx.to X client with Jev smart rules that filter the timeline by usefulness, type, and topic.
draftpulsepekth Experimental: live X draft viral scorer powered by TypeSafe Jev. TypeScript ★ 0
emoji-jevcolinmcdermott Emoji autocomplete at the speed of typing. TypeSafe AI Jev on a Whop-hosted TanStack Start app. TypeScript ★ 0
Jev Classifier Local Telegram channel JSON analyzer for intent, quality, sentiment, and speaker tone.
jev-audio-beepersantos-sanz Low-latency audio censorship POC using Jev typed decisions and ffmpeg. TypeScript ★ 0
jev-document-classificationCharlyhno-eng JEV Document Classification enables the rapid and cost-effective classification of text-based documents using AI, leveraging TypeSafe's "System One" model. TypeScript ★ 0
jev-resume-analyzerawun8191 CV diagnostics and job alignment with TypeSafe Jev, React and FastAPI. Python ★ 0
jevegis0xArx Guardrails for LLM apps in one API call. Prompt injection, jailbreaks, leaks, unsafe content. Built on TypeSafe Jev. MIT. TypeScript ★ 0
JevTicktRouterGhrezaKh74 A .NET 10 and React 19 application for fast, structured AI-powered ticket triage using TypeSafe Jev. C# ★ 0
mimicryjxucoder Rewrite AI drafts in your own voice with a bounded TypeSafe feedback loop. Python ★ 0
pkg-gatehemanth Pre-install security gate for npm lifecycle scripts using TypeSafe System One. JavaScript ★ 0
s1scpaczek System One Search: navigate and trace code with TypeSafe judgments and repository evidence. TypeScript ★ 0
scam-shieldShupingR Scam text message filter powered by TypeSafe's Jev model. TypeScript ★ 0
transcript-scorecardbrandonbryant12 ACME live support-call scoring demo with TypeSafe AI, Effect, SQLite, React, Vite, and Turborepo. TypeScript ★ 0
typesafe-commentHexdigest123 Small Python package that uses typesafe.ai to evaluate code comments on certain heuristics. Python ★ 0
typesafe-triage-guardshivam2003-dev Three composable judgment pipelines on TypeSafe's Jev: support-ticket triage, observability alert triage, and a deploy-risk gate. Python ★ 0
07 · Games & simulations48 entries

Games and simulations with Jev making the moves.

ProjectDescriptionLangStarsLinks
typesafe-mariofhshaik A TypeSafe/Jev agent that plays Super Mario Bros. from structured emulator state. Python ★ 259
jev-droneRomanSlack Camera-only autonomous drone in MuJoCo with a small judgment model (TypeSafe Jev) in the loop at 2.5Hz. Python ★ 58
typesafe-snakesorrycc Snake auto-played by TypeSafe's Jev model: one System One choice per tick, legal moves and facts generated in code. TypeScript ★ 17
tsai-scphyous TypeSafe Jev controls original StarCraft shareware through keyboard and mouse with recorded action probabilities. Python ★ 13
mario-jevshantanugoel Python prototype that plays NES Super Mario Bros. from structured RAM observations, with Jev answering focused movement and jump questions. Python ★ 10
Jev Driving Labkavehmz Interactive experiments from support routing to a 3D driving simulation: structured sensor state in, typed steer, brake, and overtake decisions out. JavaScript ★ 6
OneVOneJevemrickgarrett 1v1 Jev quickscope arena — Three.js + TypeSafe System One. TypeScript ★ 5
heist-oneAbdelStark Observable browser stealth game: Jev makes typed guard judgments while deterministic code owns the world. TypeScript ★ 2
jev-askable-armTarunTomar122 Zero-shot English goals on a sim Franka. Jev chains hardcoded primitives. Python ★ 1
jev-doom-agentlukaske A browser-native Doom agent experiment with structured spatial state, composable AI controls, live decision telemetry, and a Chocolate Doom WebAssembly runtime. TypeScript ★ 1
jev-gomoku (XieChengYuan)XieChengYuan 弈瞬:双 Jev 五子棋九宫格输入实验台,逐手查看模型决策,支持真实对局回放与实时对战。 JavaScript ★ 1
rubikjev0xtrou Challenge the Jev's intelligence in Rubik Cube puzzles. TypeScript ★ 1
tsai-civ2phyous TypeSafe Jev plays original Civilization II in a browser, with live action probabilities. Experimental full-game harness. Python ★ 1
Agent-JEV-TetrisYasserbhb Using the new model JEV to play the game tetris. HTML ★ 0
beatjevlambertsj Browser game: try to beat Jev at spotting a spam message. JavaScript ★ 0
casse-brique-typesafePara-FR A Next.js brick breaker whose paddle is controlled in real time by TypeSafe AI's Jev model. Built with Claude Code. TypeScript ★ 0
chess-jev 3D chess where Jev plays both sides, or you jump in.
cyber-breach-jevrchovatiya88 Cyber-Breach: The Jev Protocol - A tactical cyberpunk arena combat game powered by TypeSafe AI Jev System One decision model. JavaScript ★ 0
Game Plan Small game that tests how Jev handles unknown input.
Hollow Creek Village NPCs that judge you each tick, deciding what to do and how they feel, instead of chatting.
hundredjammaru 100 AI NPCs live in a tiny town. Jev chooses the next action; the world writes the story. TypeScript ★ 0
Jev Arcade Krunker-style 1v1 FPS where Jev decides move, aim, ADS, fire, and jump at about 9 Hz.
Jev board games Playable board games driven by Jev decisions.
Jev Pac-Man The maze as JSON; Jev picks the turn at each junction in real time.
Jev Tetris Jev picks rotation and column from holes, stack height, and bumpiness.
jev-bfskomikat Wikipedia link races with direct Jev ranking and a live terminal display. Python ★ 0
jev-gamesshantanugoel Visual Jev lab for multiple games and emulator platforms. Python ★ 0
jev-gomokumizchi MoonBit client for Jev plus a Jev-vs-Jev gomoku match, with timing logs. MoonBit ★ 0
jev-play-ping-pongIcohen007 Jev plays browser table tennis in real time: structured telemetry, typed decisions, ordinary Chrome inputs, and auditable evidence. JavaScript ★ 0
jev-snakeiammusham An experimental Snake environment where the game engine owns deterministic rules and TypeSafe AI's Jev makes the movement decision from structured state on every tick. Python ★ 0
jev-t-rex-runnerjoshlarsen Chrome dino game played by Typesafe AI Jev model. JavaScript ★ 0
jev-tetrisMachineLearning-Nerd A visual TypeSafe demo where Jev chooses verified Tetris placements. Python ★ 0
jev.modsHardel-DW Minecraft mod where Jev tries to finish the game from scratch without a scripted route. Java ★ 0
jev2048KyleKreuter Let Jev (TypeSafeAI) solve 2048. TypeScript ★ 0
last-exit0x963D A cyberpunk border encounter powered by TypeSafe Jev. Bluff the guard. Inspect the receipts. JavaScript ★ 0
pdoom-protocolonionminionops-beep USER + JEV: P(DOOM) PROTOCOL — co-op platform shooter where TypeSafe Jev plays alongside you. TypeScript ★ 0
pong-jevsafzanpirani TypeSafe's Jev plays Atari Pong. One typed Choice question per frame, no coordinates sent to the model. TypeScript ★ 0
ps2-ai-agentopaielsheikh Autonomous PlayStation 2 AI Agent with real-time visual telemetry HUD powered by TypeSafe Jev System One. Python ★ 0
river-oaksBunsDev NPCs of River Oaks Houston, Texas using Jev to power NPCs. ★ 0
river-run-typesafeashaazami River shooter game in Python, inspired by Atari's River Raid, played by a TypeSafe AI pilot. Python ★ 0
roverlabjuancamiloqhz A 3D planetary rover sandbox for experimenting with autonomous decisions using TypeSafe AI. TypeScript ★ 0
shady-towntpaulshippy Shady Town: social-deduction party game for the living room TV, moderated by TypeSafe Jev. Ruby ★ 0
siegevnmoorthy SIEGE: 200 people vs one agent. A typed action gate (TypeSafe System One) that learns from every breach, evaluated by W&B Weave, hardened by a defender loop. Built at CoreWeave Hacks: Agent Loops 2026. TypeScript ★ 0
snake-jevsiroccomask Snake controlled by parallel Jev assessments, with one API call per game tick. Python ★ 0
terrariumTheGali A sandbox where a TypeSafe System One model presses the controls of a small creature. Code runs the world. JavaScript ★ 0
typesafe-3d-chessmalDuffin 3D chess powered by TypeSafe AI (Jev). AI vs AI by default, or play either side. Multiple difficulty levels. TypeScript ★ 0
typesafe-chessTholeG Chess where both players are TypeSafe's Jev model: every move is a typed Choice decision. JavaScript ★ 0
typesafe-minecraft-demoellistev A Minecraft Java player controlled by TypeSafe AI, with live decisions, Canadian flag building, and a side-by-side dashboard. JavaScript ★ 0
08 · Demos & playgrounds48 entries

Live demos and playgrounds.

ProjectDescriptionLangStarsLinks
killmyideamonteduro Describe your startup idea. Jev decides: kill it, fix it or ship it. TypeScript ★ 13
jev-mejon-devlapaz A grill-me style interrogation of your idea, with Jev doing the grilling. Python ★ 9
typesafe-ai-playground (BunsDev)BunsDev Community TypeSafe AI playground: 110 use cases, games, dilemmas and model challenges, with editable prompts, A/B comparisons and a mobile-friendly UI. TypeScript ★ 7
jev-autopilotarielweinberger 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. TypeScript ★ 3
jev-system-onehaseeb-heaven A polished OpenAI + TypeSafe Jev terminal interface for answers with transparent decision reports. Python ★ 2
Should AI Kill Us All?hellogumbo Live verdict page: feeds Jev the day’s Florida Man, odd-news, politics and world headlines and asks all three primitives whether AI should kill us all, refreshed every ten minutes. JavaScript ★ 2
typesafe-ai-playgroundnickthompson480 Community TypeSafe AI playground: 110 use cases, games, dilemmas and model challenges, with editable prompts, A/B comparisons and a mobile-friendly UI. JavaScript ★ 2
clarity-judgeBunsDev Multi-axis writing quality checker powered by TypeSafe AI's Jev model. Separate named checks, each with its own verdict and confidence. TypeScript ★ 1
got-jevphureewat29 Jev (TypeSafe AI) PoC through Game of Thrones. TypeScript ★ 1
gpt-vs-jevTanayPadar Compare GPT generated language with JEV structured Noul decisions on the same input. TypeScript ★ 1
guard-jevNorbertBodziony Comment-moderation playground: paste a comment, Jev decides what to do with it. TypeScript ★ 1
harden-jev-decidestylerjharden JEV picks which stream idea becomes the live MVP. TypeSafe System One decision board. TypeScript ★ 1
Instinctjoevidev Instinct: describe a case in free text and Jev picks the UI from a fixed catalog without generating a line of code or copy. TypeScript ★ 1
jev-playground (Little-Planet-Labs)Little-Planet-Labs A small Next.js app for experimenting with TypeSafe AI's Jev model (System One). TypeScript ★ 1
toolgatendolinschi Agent tool/MCP call gate — allow / ask_human / deny via TypeSafe Jev. TypeScript ★ 1
typesafe-ai-playground (markjaquith)markjaquith A playground for experiments around Jev, TypeSafe's System One model. Rust ★ 1
typesafe-arenaDeepBlueDynamics A playground for TypeSafeAI's Jev Model. Rust ★ 1
cartshieldndolinschi CartShield — SMB checkout fraud disposition via TypeSafe Jev. TypeScript ★ 0
Crowdcheck Test a post against 10,000 synthetic personas before you publish it.
extremely-specific-councilcbetz Twelve members. Zero qualifications. A playful TypeSafe AI council with animated votes, inspectable decisions, and shareable verdicts. TypeScript ★ 0
harnessjudgendolinschi Judge agent steps — ok / retry / escalate / stop via TypeSafe Jev. TypeScript ★ 0
hiresignalndolinschi HireSignal — resume first-pass fit+interview via TypeSafe Jev. TypeScript ★ 0
human-compilerasfarsadewa A compiler for human language. Paste text, get diagnostics. Measured by TypeSafe Jev. TypeScript ★ 0
Jev Gamecastnarulaskaran Jev Gamecast: replay-first React app that asks Jev typed questions about live sports data. TypeScript ★ 0
Jev mood demo Talk nicely or nastily over time; structured state tracks the mood.
Jev Room One sentence becomes six room settings. Jev chooses, the app renders.
jev-ad-preflightcardotrejos Typesafe/Jev public X demo. ★ 0
jev-board-labWebGrga Interactive explorer and Jev question workspace for Jev Board datasets. JavaScript ★ 0
jev-bun1heiwa4126 TypeSafe の Jev を TypeScript SDK で使ってみる最初の 1 歩. TypeScript ★ 0
jev-demosBud-ro Demos to test the effectiveness of TypeSafe's "Jev" System One Model. Dart ★ 0
jev-devn-yokomachi 同じ発言を jev と LLM の両方に判定させ、感情の変動値のズレと応答速度を1画面で見比べるデモ(affectus + Vercel AI Gateway). TypeScript ★ 0
jev-paper-judgeJacobLinCool Feedback on your paper in seconds. TypeScript ★ 0
jev-playground (wustep)wustep Can a System One model steer music? Jev picks the plan (enums only); code renders sheet, audio and MIDI. TypeScript ★ 0
jev-should-i-applycardotrejos Typesafe/Jev public X demo. ★ 0
jev-user-jurycardotrejos Typesafe/Jev public X demo. ★ 0
jevplayndolinschi TypeSafe Jev playground — custom Choice/Score/Noul builder with live distributions. TypeScript ★ 0
Job Risk AnalyzerWeSecureYou Job Risk Analyzer: CLI and REST API that uses Jev to score an occupation's exposure to AI-driven layoffs and its resilience. TypeScript ★ 0
lanebreakndolinschi LaneBreak — support ticket priority+routing via TypeSafe Jev. TypeScript ★ 0
mcpmatchndolinschi Match user goals to MCP catalog (two-stage) via TypeSafe Jev. TypeScript ★ 0
ProbablyJordiParraCrespo Probably: live BTC, ETH, and XRP prices with a shared TypeSafe buy-or-wait demonstration. No trades placed. TypeScript ★ 0
pulselanendolinschi PulseLane — clinic triage decisions via TypeSafe Jev. TypeScript ★ 0
Search-Function-TestShifros A test project based on Jev AI, the goal is to build a search function for a blog/article website that has 100s of articles to search from, So the user can actually use the search as chat to question anything and find related answers/articles. JavaScript ★ 0
spendbrakendolinschi Agent budget brake — continue / downgrade_model / stop via TypeSafe Jev. TypeScript ★ 0
swarmrouterndolinschi Route tasks to research/code/browser/support/writer agents via TypeSafe Jev. TypeScript ★ 0
trustgatendolinschi TrustGate — indie media T&S gate via TypeSafe Jev. TypeScript ★ 0
TypeSafe Typewriter Val Town demo where 16 typed judgments update live as you type.
typesafe-image-diffusionWizhill05 Diffusion-style pixel art out of a classifier: 256 parallel per-pixel Jev questions plus refinement passes. HTML ★ 0
Yes / No Free, no-signup Noul demo. Ask a question, get yes, no, or maybe, with web search when needed.
09 · Benchmarks & research87 entries

Benchmarks, evals, calibration studies, and open replicas.

ProjectDescriptionLangStarsLinks
SemIfTheoLeeCJ Semantic ifs from open models, on a 3090 at home. Independent; not affiliated with Jev or TypeSafe. Python ★ 1,491
jevlikevinnylarouge Train a small model that chooses among a changing list of text options, one probability per option in a single pass. Includes Doom, chess, and Wikispeedia demos. Python ★ 851
jev-visualhr98w An educational Jev-like visual inference experiment on Apple Silicon: shared context, direct candidate scoring, and local visual demos. Python ★ 97
deciderMapika One-pass typed decisions with calibrated probabilities (System One style model), fine-tuned from Qwen3.5-2B. Python ★ 88
jev-eval-agentvinilana Personal-assistant agent built on Vercel's eve with 100 mocked tools, measuring how many steps it takes when Jev picks the tool versus the LLM. HTML ★ 80
reflexkshetrajna12 A small open decision model: state + typed questions -> calibrated probabilities. A Jev / System One re-creation on Qwen3.5. Python ★ 56
typesafe-ai-benchmarkiammrduncan This is a LLM Gateway that mimics typesafe ai structured output. Like an imposter Jev. TypeScript ★ 31
open-jev (daseinlabs)daseinlabs One-pass option scoring with a local Gemma 3 4B on Apple silicon via MLX, inspired by jevlike, with a Doom demo. Python ★ 27
jevmlxbnsd55 Jev-style parallel constrained decisions for any MLX model on Apple Silicon. Typed, schema-valid JSON in one forward pass. Python ★ 20
mini-jevr-ms Mini-Jev: what a Jev-style typed-decision interface looks like on a frozen Qwen3-4B — read the option letter's logits instead of generating JSON. Preregistered experiment, results, teaching bench. Python ★ 19
openjevrazorback16 Open, Jev-compatible System One decision server on DiffusionGemma. Python ★ 15
jev-on-a-laptoprorshopping Unofficial study: Jev-style parallel typed decisions on stock 1.5B-8B models on an Apple Silicon laptop. Benchmarks, research notes, and a Hugging Face Space demo. Python ★ 14
open-jev (JoshuaSP)JoshuaSP Typed JSON inference with DiffusionGemma, with Every and Jev benchmark results. Python ★ 14
jevbetterolanotolu A stronger one-pass scorer over a variable list of text options: hashed n-gram encoder, rival-aware attention, gated head, temperature scaling, benchmarked against jevlike. Python ★ 11
TypeARzmtomorrow Type-safe one-decision-per-token decoding engine for autoregressive LLMs, inspired by Jev. Python ★ 8
jev-benchmarksAbdelStark Probability-aware evaluation for typed decision models: calibration, selective risk, latency, and reproducible benchmarks. Python ★ 7
jev-column-racegoodrahstar Jev vs Gemini 3.8 Flash: labelling 1,000 app reviews, 4.1× faster and 7× cheaper. JavaScript ★ 7
openvonsgenai-craft Openvons (open-Jev): 有限選択肢に確率で答える判断層 — テキスト / 画像 / 日本語音声コマンド. Python ★ 7
Jev_appsJackZeng 看看 Jev 能做什么:用中英文讲清热门应用、工作原理和各自优缺点。Explore Jev apps with plain-language examples, explanations, and comparisons. Python ★ 5
jevfirekikoncuo JEV-inspired parallel decisions for CUDA LLMs. One context, many decisions. vLLM API, game-agent examples, and reproducible benchmarks. JavaScript ★ 5
LegalForecastBenchjohnhughes3 LegalForecast-MTD benchmark alpha and official evaluation workflows. Python ★ 5
openjev (zhihz)zhihz Local bilingual probability decisions from context, questions, and candidate answers. Independent research preview inspired by TypeSafe Jev. Python ★ 5
jev-korean-benchmarkmahlernim Reproducible early-access evaluation of Jev on Korean understanding and medical text, with runtime and cost evidence. Python ★ 4
jev-lmy0usaf A word-level language model whose output layer is Jev: n-gram drafter, Noul chunk verification, bits-per-token eval. TypeScript ★ 4
system-one-openmithalouni Open replica of TypeSafe's Jev: typed calibrated decisions in one forward pass, on Gemma 4 E2B / Gemma 3 270M (Modal). Python ★ 4
typesafe-localaabolfazl 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. Python ★ 4
daf-jevdocxology Daf-jev: composable Python toolkit for TypeSafe's Jev (System One) decision API — question builders, confidence gates, evaluator, calibration, CLI, MCP server, agent skill. Python ★ 3
jev-behavior-studyRINNECODER Independent Jev 1.13.0 behavior study: report, controlled prompt experiments, raw results, and offline verification. Python ★ 3
jev-chatadhyaay-karnwal A chatbot from typed Jev decisions: hierarchical speculative decoding over System One probabilities. Python ★ 3
jev-search-rerank-evalzhuyansen Does a TypeSafe Jev rerank beat embedding search? Graded relevance eval (9,831 pairs, 164 zh/en queries) over the Agent Skills Hub catalog, with the judge-circularity bias measured. Python ★ 3
LitJevzhengxuyu A reproduction of Jev that turns any Qwen model into a fast decision model, serving the same /v1/systemone schema (Choice, Score, Noul) with no training and no generated answer text. Python ★ 3
system-onesgoedecke Batched single-token choice inference for open language models, compatible with TypeSafe. Python ★ 3
Verdict-open-jevHeman10x-NGU Non-autoregressive decision engine on ModernBERT (151M) with calibrated uncertainty (RLCD), TypeSafe AI Jev benchmark audit, and in-browser WebGPU playground. Python ★ 3
calibreFirasSX914 Calibration and confidence-based routing measured on Banking77: 80.2% accuracy at $0.103 per 500 decisions. Python ★ 2
jev_stocksosopop An experimental JEV-powered framework for forecasting short-term stock price direction from structured market data. Python ★ 2
jev-benchmarkwondertwins Benchmarks and a playground for TypeSafe's Jev (System One) model: chess, and who-is-the-player-talking-to for speech-to-text game NPCs. Python ★ 2
jev-for-engineersFoadsf Eight minimal working examples of TypeSafe's Jev (a System One model) applied to mechanical and electrical engineering: CAD/CAE/CAM routing, FEM result triage, DFM screening, BOM alignment, hallucination-proof extraction. Zero dependencies. Python ★ 2
jev-gateMongLong0214 Not every coding task needs your best model. Experimental Jev-powered model routing for Claude Code — V3 prototype runs today, V4 routes at the task boundary. TypeScript ★ 2
jev-harnessAntonioCoppe Decision harness for TypeSafe Jev — confidence gates, shadow mode, recipes, and evals. Claude CLI 48.9s → Jev 1.3s on the same row-filter job. TypeScript ★ 2
jevcalabhixhek Stop guessing confidence thresholds: calibrate, threshold, and drift-check typed decision models (TypeSafe Jev) against an LLM teacher. Python ★ 2
jevgptBewinxed A chatbot built on a model that cannot generate text (TypeSafe AI's Jev, driven autoregressively). TypeScript ★ 2
open-alternative-jevikermoel Open alternative to Jev: typed, calibrated decisions from any open-weights LLM in one forward pass (HF + vLLM), with benchmarks. Python ★ 2
trade-jevjustinhe16 Backtest Jev (TypeSafe) as a BUY/SELL/HOLD trader on NQ L10 order-book data. Python ★ 2
decisionbridgegrishahq A Jev-inspired decision interface for existing LLMs. Explicit choices, scores, calibration, and review thresholds. HTML ★ 1
jev-agent-failure-benchmarkTokenTrim Benchmarking Jev (Typesafe.ai) against a strong LLM on the Who&When Pro agent-failure-attribution benchmark (text subset). Python ★ 1
jev-curateAkashPriyadarshii High-throughput synthetic & pretraining dataset sifter powered by TypeSafe AI Jev (api.typesafe.ai). Stream, filter, and score Parquet & JSONL datasets at 1,500+ rows/sec using System One typed decisions (Choice, Score, Noul). Rust ★ 1
jev-explorationSamuelSacco Jev (TypeSafe) exploratory thread: claim audit, live demos, and runnable code. Python ★ 1
jev-freeformkesku An observable raw-character chat experiment powered entirely by TypeSafe Jev Choice. JavaScript ★ 1
jev-little-airwayslbotinelly A show-and-tell capability study for Jev, TypeSafe's System One decision model. HTML ★ 1
jev-rerank-benchanessbelbati Can a decision model beat dedicated rerankers? TypeSafe Jev vs Cohere Rerank 4 vs ZeroEntropy zerank-2 vs a chat-model baseline: 14 datasets, every raw API response, bootstrap ranges on every gap. Python ★ 1
jev-research-evaljgridifier Reproducible Jev Ultrafast research-browser eval harness + field note (QC’d cases, suite runner, report generator). Not investment advice. HTML ★ 1
jev-sec-benchGaurav-Gosain Blind security benchmarks for Jev, TypeSafe's System One model: prompt injection and vulnerable code detection, built on jev-go. Go ★ 1
jev-synergy-screeningPistachioAIHQ Jev (TypeSafe System One) × ASReview SYNERGY abstract screening demo — Choice/Noul vs gold labels. Python ★ 1
jevifyaltryne An agent skill to discover TypeSafe Jev opportunities, design typed questions, and learn from recent community experiments. Python ★ 1
kyotsu-ai-benchshibadogcap AI benchmark on Japan's 2026 Common Test: Jev vs luna-none vs luna-low (static dashboard). HTML ★ 1
mcts-agentlhemerly Discriminative Monte Carlo Tree Search using TypeSafe Jev System One Primitives and Gemini. Python ★ 1
padflow-jev-evalszsavage8 Typed-decision benchmark from PadFlow (land development SaaS): schemas, anonymized labeled rows, and a runner for confidence-calibrated models like TypeSafe Jev. Python ★ 1
qwen-rlcdshamazharikh Jev-style calibrated decision model (Choice/Score/Noul) on Qwen3.5-0.8B. Python ★ 1
RISC-jeVi2cjak I tortured Jev into being a RISC-V CPU. Python ★ 1
FinancialPredictionJevthodoh1 Using Jev to test how well it predicts financial markets(just like most llms as of september 2026, it doesnt do that good). Python ★ 0
jev-alpha-benchGaurav-Gosain Does Jev predict stock returns from news? It reads the news well; there is no tradeable alpha. Three arms separate reading from recall. Go ★ 0
jev-anotacao-sentencaslab-dados Jev (TypeSafe) vs. Gemini 3.8 Flash vs. GPT-5.6 Luna na anotação estruturada de sentenças do TJSP: qualidade, tempo e custo. Python ★ 0
jev-as-a-judgedanielgshea Using Jev as an evaluator. Python ★ 0
jev-deferred-crispificationdnakhoa Position paper: the Hidden-Markov and fuzzy primitives missing from TypeSafe AI's Jev and System-One decision models. Two lemmas, one principle (Deferred Crispification), one architecture (BSF-S1). TeX ★ 0
jev-finance-benchmarkhifizz Typesafe.ai model jev finance benchmark. ★ 0
jev-headline-benchGaurav-Gosain Can Jev pick the winner of a real headline A/B test? 64.5% across 10,984 Upworthy randomized experiments, 74.7% when the difference was decisive. Go ★ 0
jev-jp-addresssmasato Jev (TypeSafe) 性能評価プロジェクト — 日本郵便 KEN_ALL をマスタに、AI SDK 経由の Jev が住所のあいまい一致にどこまで使えるかを検証. TypeScript ★ 0
jev-labMenny1337 TypeScript experiments, evaluations, and latency benchmarks for TypeSafe's Jev model. TypeScript ★ 0
jev-phishing-benchanisselbd Jev (TypeSafe) vs Claude Haiku 4.5 on 2 000 phishing emails: accuracy, calibration, latency, cost. Reproducible benchmark. Python ★ 0
jev-pick-and-place-studytryaksh A small reproducible MuJoCo pilot comparing Jev, Claude Haiku, and reactive rules for pick-and-place. Python ★ 0
jev-playground (hegargarcia)hegargarcia Benchmarks Jev against other evaluation models in games with explicit states, legal actions, and measurable outcomes. TypeScript ★ 0
jev-reportHackSing 发明 RLHF 的人,这次做了个不会说话的模型:Jev 独立研究报告。52 页 PDF + 50 条中文实测复现包 + 143 条可回溯数据表. Python ★ 0
jev-routing-experimentTokenTrim Benchmarking TypeSafe's Jev decision model as a cost-efficient LLM router on RouterArena. Python ★ 0
jev-secret-detectionteyhouse Measures how well TypeSafe's RLCD-Jev model spots real secret credentials in file snippets. Python ★ 0
jev-shadcn-lint-evalblas0 A small second eval for shadcn-ui/lint that uses TypeSafe's Jev to judge the linter's own output. JavaScript ★ 0
jev-spam-evalbitnovus Zero-shot spam filtering with TypeSafe Jev Noul questions, compared with TF-IDF baselines. Jupyter Notebook ★ 0
jev-trace-classifiersypherin Application of TypeSafe Jev (noul judgment primitive) on the collusion.wiki corpus: agent vs human page authorship, head-to-head vs local Qwen3.8-Flash-Next. Python ★ 0
misereru-slide-jevmyokoym Ongoing Japanese research deck on Jev and System One models, maintained as Markdown slides. JavaScript ★ 0
openjev-experimentszefir1990 Experiments with openjev, an open Jev-style option-logit runner, on local models. Python ★ 0
Parallel Constrained Decoding (Qwen2.5-1B-RLCD) Hugging Face Space exploring open-source parallel constrained decoding as an alternative to Jev.
PocketJevNullPo-jp On-device iPhone visual decision tool using MLX and Qwen3-VL direct option logits. Swift ★ 0
shade-arena-jev-monitornican2018 Evaluating TypeSafe's Jev as a fast monitor and action gate for agent sabotage in SHADE-Arena, compared with Gemini 2.5 Flash/Pro. Python ★ 0
system-one-adapter-rustcodeitlikemiley Rust port of TypeSafe system-one-adapter (LLM-backed system_one evaluations). Rust ★ 0
system-one-gemmaakash-kamat Open-source Jev-style System One decision model. Gemma 3 270M with a scoring head — fast, calibrated decisions in a single forward pass. No text generation. Inspired by TypeSafe.ai's Jev. Python ★ 0
thaiexam-jev-chartsvehas Charts: TypeSafe Jev evaluated on Thai standardized exams vs 110 other models. HTML ★ 0
Typesafe_chess_evalAliceRoselia An evaluation of typesafe AI chess. As it turns out, the AI isn't doing really well even though chess is not a particularly open-ended game. Still, it's only a prototype and this probably wasn't optimzied for games. Python ★ 0
typesafe-oraclestrophee-bot Evaluating TypeSafe's System One primitives (Choice/Score/Noul) — where a typed oracle beats an LLM call. JavaScript ★ 0
10 · Other lists7 entries

Other curated lists.

ProjectDescriptionLangStarsLinks
awesome-typesafeAbdelStark Curated list of official resources and community projects for TypeSafe, System One models, and Jev, with a GitHub Pages site. CSS ★ 205
awesome-jev (yibie)yibie A curated list of public projects, integrations, and discussions built on Jev — TypeSafe AI's System One model for typed decisions. Python ★ 113
awesome-jevcobanov A curated, source-backed list of projects built with Jev, TypeSafe AI's System One model for typed decisions. ★ 76
awesome-jev (AnotiaWang)AnotiaWang A curated list of awesome Jev / TypeSafe System One applications, libraries, and resources. ★ 54
awesome-jev (fatwang2)fatwang2 A source-backed Jev project directory with a reusable Jev-only GitHub review workflow. JavaScript ★ 54
awesome-jev-projectslogicrw Awesome Jev: source-backed open-source ecosystem radar, plain-language project discovery, and automatic GitHub sync. JavaScript ★ 24
awesome-jev (OmniJev)OmniJev Papers, open reproductions and independent evaluations behind System One models and Jev. Python ★ 5
11 · Articles & threads48 entries

Coverage, write-ups, and X threads.

ProjectDescriptionLangStarsLinks
AI that does not talk Practical guide: playground, Python and JS SDKs, raw HTTP, and the agent skill.
AIAvatarKit turn-end gate Voice-dialog turn-end detection using Jev scores after speech.
AINews: Jev, a System One Model that only decides Latent Space's launch-day roundup: over 100x faster and 200x cheaper than small frontier LLMs.
Browser Use + Jev Gregor Zunic's flight-search demo with a dynamic DOM action space.
Computer use built on Jev Aaron Levin: 155x cheaper than Opus 5, about 20x faster, and it generalizes across operating systems.
ConsoleChaosRacing driven by Jev Racing UI wired to Jev driving decisions.
DuckDB Jev classifier DuckDB extension that classifies rows in CSV, Parquet, or DuckDB tables with Jev, about 10 seconds per 1,000 rows.
Early Jev tools roundup Thread cataloguing the first wave of Jev tools: MCP servers, routers, reviewers, and browser agents.
Ground Truth news-framing extension Browser extension that classifies an article's framing, type, topic, and loaded language with Jev.
Hacker News launch thread 1,800-point thread debating whether typed decisions replace LLM calls for classification, routing, and scoring.
He says he co-invented ChatGPT. His new AI will not write a word Dev.to walkthrough of the Vercel AI SDK evaluate integration.
Hide posts on X with natural language Marcel Pociot's browser extension that collapses posts based on a Jev judgment.
Hook panel A/B tester Near-real-time scoring of TikTok and Instagram hooks against about 100 personas.
Internal classifier field note Matched-precision comparison against a private fine-tuned classifier.
Jev as an agent safety monitor Test report using Jev to check each agent action first: most attacks caught, almost no false blocks.
Jev gomoku harness Local tactics shrink 225 moves to about 40 candidates, then Jev picks among tiered options.
Jev in 34 seconds Short video explainer of how Jev's typed-decision loop works.
Jev in a Grammarly-style Mac app Desktop writing app using Jev for fast structured writing judgments.
Jev plays Minecraft (r/accelerate) Work-in-progress demo of Jev driving Minecraft, including fleeing zombies at night.
Jev Typewriter launch Steve Krouse's playable 16-judgment demo and video.
Jev vs Mistral and Gemini for event validation Head-to-head test at validating local event listings, with cost and latency.
Jev vs Qwen on Cerebras Video comparison against a structured-output LLM baseline.
jev 同士に五目並べで対戦させた Jev vs Jev gomoku with source and timing logs.
jev-rabbit PR review bot Work-in-progress PR reviewer with plain-English Jev rules.
Jev: System One models explained The Neuron's explainer on AI decisions without a chatbot.
Jev: System One models explained (DataCamp) Third-party write-up of the System One primitives, pricing, and vendor workflow evals.
Jev: The Language Model That Will Not Talk Anthony Maio's essay on what a model that cannot generate text is for.
Kalshi prediction-market bot Jev trades 15-minute and 1-hour BTC, ETH, and SOL markets on Kalshi.
Launch thread by Diogo Almeida TypeSafe's founder on why RLCD-trained decision models are a shorter path to value than chat models.
Mini-Vibe Check: Jev judged everything I have written in 0.7 seconds Every's Mike Taylor runs his whole archive through Jev.
Model router built with Jev Ephraim Duncan's demo where Jev decides which model should serve a request.
Model router CLI Task plus subscription list in, Jev picks which model or agent should handle it.
One judge call vs twelve dimension scores One direct Jev question per row against 12–14 Jev-scored dimensions with locally fitted weights on three classification tasks: 5,477 test rows, 25,174 Jev calls, $1.43. Decomposition wins on Japanese NLI (0.9076 vs 0.8373) but flags about 25× more hard benign rows as attacks (37.2% vs 1.5%).
OpenCode browser use powered by Jev Preview of fast browser use with Jev and OpenCode's browser CLI.
skillbox + Jev skill routing MCP skill router where Jev picks the relevant skills instead of a long agent search.
Spanish AEPD corpus test Jev versus a hand-built regex on 544 public data-protection resolutions: 98.2% agreement for about five cents.
Stagehand + Jev browser use Observe the accessibility tree, Jev chooses the next action, Stagehand executes.
StarCraft Brood War WASM MCP demo Brood War in WASM exposed as an MCP server, with Jev playing and still losing to a Zerg rush.
Support ticket classifier Jev labels category, urgency, and human-versus-auto handling for support tickets.
Tabletop MMORPG action mapper Eval of Jev turning free-text player intent into typed server actions: 96% agreement, 317 ms median.
Typed decisions, not chat Independent walkthrough separating TypeSafe's published claims from public evidence.
TypeSafe AI debuts model for machines that plays Doom The Register on the launch, the Doom demo, and the $40M seed round.
TypeSafe Jev: the first decision-only model class Release-week technical roundup: API, evals, adapter, and skill.
TypeSafeのJevを正しく驚く Japanese walkthrough of what Jev is and is not.
Vercel fx: Jev as a command safety reviewer Guillermo Rauch: Jev reviews every fx command, faster and more accurate than a chat model.
ViZDoom Jev agent Two decision channels on ViZDoom, navigation at 5 Hz and combat at 12 Hz, with an 18-kill test run.
What is Jev? Short practical intro with a Python ticket-triage example.
Wiki-link clicker demo Page-level demo where Jev picks which candidate link to click toward a goal.