Awesome Jev [](https://awesome.re)

September 20, 2026 · View on GitHub

Directory of projects built on Jev, TypeSafe AI's System One model.

Site: awesomejev.com (searchable, with GitHub stars refreshed daily).

Jev takes a state plus a set of typed questions (Choice, Score, Noul) and returns typed answers with calibrated probabilities in one request, no text generation. Model id jev-latest, endpoint POST https://api.typesafe.ai/v1/systemone, early access since 2026-09-15. Docs: docs.typesafe.ai.

Not affiliated with TypeSafe AI. To add a project, open a pull request or file an issue. See CONTRIBUTING.md.

656 entries · last refreshed 2026-09-20

Contents

Official

Docs, SDKs, and resources from TypeSafe AI.

  • 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 skills (site) - Official agent skill for Claude Code, Codex, and compatible agents: primitives, patterns, and how to structure evaluations.
  • System One adapter (Python) - Official drop-in TypeSafeClient replacement backed by OpenAI, Anthropic, and compatible LLM APIs, for comparing Jev against chat models.
  • TypeSafe JavaScript SDK - Official TypeScript/JavaScript client with inferred answer types. npm install @typesafe-ai/sdk.
  • TypeSafe Python SDK (site) - Official sync and async Python client. pip install typesafe-sdk.

SDKs & clients

Community clients for languages without an official SDK.

  • advocaat - A small, type-safe client for asking AI questions about your data, powered by TypeSafe Jev.
  • ruby_decision_model - Ruby client for decision models such as Typesafe Jev.
  • jev (dannote) - TypeSafe Jev for OTP: reply to Jev from a GenServer and pattern match on its answer.
  • typesafe-ai - Typed TypeSafe AI clients for Rust, with async and blocking backends and observable retries.
  • typesafe-sdk-go (Tangerg) - Go SDK for the TypeSafe AI API — typed questions in, probability distributions out.
  • typesafe-sdk-go (atharvamhaske) - Unofficial go sdk for typesafe ai.
  • zod-jev - Zod validates the shape, Jev validates the meaning: semantic checks on request bodies become calibrated probabilities you threshold in code.
  • jev-dsl - Agent-first Haskell DSL for TypeSafe's Jev judgment model: typed packets, inferred types, answers under the same labels.
  • 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.
  • JevSwiftSDK - An independent, type-safe Swift SDK for TypeSafe Jev, with async/await, batching, retries, and SPM support.
  • super-jev - A small, extensible decision-to-action harness for TypeSafe Jev.
  • typesafe-dotnet-sdk (site) - 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.
  • typesafe-sdk (joshmn) - Ruby client for typesafe.ai.
  • jev-go - Community Go SDK for TypeSafe AI Jev / System One.
  • jev-go (Gaurav-Gosain) - Go client for TypeSafe's System One API and its model Jev: typed judgments and calibrated probabilities instead of generated text.
  • jev-java - Idiomatic Java SDK for TypeSafe AI Jev System One decision engine.
  • jod (site, post) - Semantic schemas over TypeSafe's Jev — validate the state locally, then project typed answers.
  • typesafe_sdk (post) - 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.
  • typesafe-ai-rs (site) - Independent async and blocking Rust SDK for the TypeSafe AI System One API.
  • typesafe-sdk-swift - Swift SDK for TypeSafe AI.
  • zio-typesafe-ai - Scala 3 / ZIO client for the System One API: typed end-to-end, several questions per round-trip via NamedTuple.
  • jev-java (gudcks0305) - Unofficial Java SDK for TypeSafe Jev and Vercel AI Gateway, with Spring Boot and WebClient support.
  • jev-php-sdk (site) - PHP SDK for TypeSafe's Jev: send text and typed questions, get typed answers with calibrated confidence. PHP 8.1+, works with any PSR-18 client, Laravel 8–13.
  • jevclient (site) - Async Python client for TypeSafe Jev. Typed questions in, probabilities and choices out, no prose to parse.
  • jevgo - Go client for TypeSafe AI's System One API (Jev), with optional Langfuse instrumentation.
  • typesafe-go (cole-gillespie) - Unofficial go SDK for typesafe AI, with typed answers, retries, and context support.
  • typesafe-sdk-java (site) - Community Java client for the TypeSafe System One API (unofficial).
  • typesafe-sdk-rust - Rust SDK for the TypeSafe AI API.
  • TypeSafeAI.Net (site) - .NET SDK for the TypeSafe AI platform.
  • decido - Probabilistic decisions for Python. Use Jev or bring your own provider; crawl with Playwright.
  • jev - Unofficial Go client for TypeSafe's System One API and its model, Jev.
  • jev-go (guillemus) - Unofficial Go SDK for TypeSafe AI's Jev API.
  • jev4k (site) - A Kotlin DSL and client for TypeSafe's Jev model.
  • typesafe_sdk_ex - Typesafe AI SDK in Elixir using Req.
  • typesafe-client - Unofficial typed async Rust client for the TypeSafe System One API.
  • typesafe-go (zhirschtritt) - Idiomatic Go SDK for the TypeSafe AI API.
  • typesafe-sdk (binnash) - PHP & Laravel SDK for TypeSafe AI's JEV Model series.
  • typesafeai-go - Go SDK for TypeSafe AI API https://docs.typesafe.ai/api.
  • kunobi-jev - Rust client for the TypeSafe System One API (Jev).
  • s1-rs - Typed System One layer for Rust (Choice/Score/Noul).
  • tinyjevclient - An integration with jev by typesafe.ai in Rust.
  • typesafe - An idiomatic Elixir client for the TypeSafe AI API.
  • typesafe_ai (hfiguera) - A supervised Mint client for the TypeSafe AI System One API.
  • typesafe_ai (typesend) (site) - Unofficial Elixir SDK for the TypeSafe AI API.
  • typesafe-rs (site) - Latency-first Rust SDK for TypeSafe System One.
  • typesafe-sdk-go - 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.
  • typesafe-sdk-php (site) - 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.
  • typesafe.zig - An idiomatic Zig client for the TypeSafe AI API.

Integrations

Jev inside frameworks, gateways, and platforms.

  • eve (site) - Vercel's open agent framework, which ships Jev as the default evaluation model in its experimental evaluate path.
  • ai-cli (site) - Vercel Labs terminal CLI that can run Jev as the evaluation model for its evaluate command.
  • pg-jev (site) - Ask your Postgres tables questions in plain language. A PostgreSQL extension powered by TypeSafe's Jev.
  • pg_typesafe - Pre-alpha PostgreSQL extension for TypeSafe AI (Jev) categorical classification.
  • jev-shell-history - Fish-style zsh history autosuggestions ranked by Jev (TypeSafe).
  • neo4jev (post) - Typesafe.ai System One Model Jev navigating a Neo4j graph by using a classifier over neighbouring relationships.
  • HA-Jev - Home Assistant integration for TypeSafe Jev. Ask a question about your house and get a probability, a choice or a score as an entity.
  • Loki (site, post) - Self-improving agent harness with an optional TypeSafe Jev companion for typed Choice, Score, and Noul judgments.
  • ruby_llm-typesafe - TypeSafe structured-output provider for RubyLLM 2.
  • 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.
  • jevql (site) - Semantic SQL for Postgres, powered by Jev.
  • typesafe-jev-workflow - Async LangGraph workflow that gets a typed Jev Choice (invoice or general) and routes each inbound email to the matching handler.
  • a0-typesafe-ai - TypeSafe AI Jev judgments for Agent Zero, with typed tools and probability cards.
  • typesafe-on-neon (post) - Neon Function proxy for the Neon AI Gateway with TypeSafe Jev routing.
  • llama-index-jev - LlamaIndex reranker + router powered by TypeSafe Jev — typed scores/choices, cheaper than LLM-as-judge.
  • laravel-typesafe-jev - Unofficial Laravel integration for TypeSafe Jev AI with typed responses, async requests, scoped dependency injection, and testing fakes.
  • typesafe-ai-rails - Community Rails integration on the typesafe-sdk gem: configuration, persisted usage and cost telemetry, and opt-in confidence policies.
  • typesafe-ui (site) - Shadcn-style reusable components and blocks for using TypeSafe AI.
  • judging-with-typesafe - Скилл для агентов Letta: суждения по критериям через TypeSafe System One (Jev).
  • n8n-nodes-jev (site) - Helper n8n community node for Jev by TypeSafe. Classify, route, and score text with questions you define, and get a probability for every answer so unsure items can go to review.
  • pydantic-jev-examples - Pydantic AI capabilities made stronger with Jev: small runnable demos, one file each.
  • typesafe-assist - Home Assistant Assist conversation agent powered by TypeSafe's Jev (System One) model.
  • agentgateway Jev guardrail example (post) - Jev as an LLM prompt guardrail inside the agentgateway proxy, with tracing and cost tracking.
  • Jev on Vercel AI Gateway (post) - Hosted typesafe-ai/jev for AI SDK evaluate calls, no TypeSafe waitlist required.
  • Jev4Mellea - Jev adapter to Mellea.
  • n8n-nodes-typesafe-ai (site) - N8n community node for the TypeSafe AI System One API — typed yes/no, choice and score questions with calibrated probabilities.
  • TrainLCD Jev rerank (post) - Pull request adding Jev to station-suggestion reranking in the TrainLCD transit app.
  • Vercel AI SDK provider (post) - @ai-sdk/typesafe-ai plus experimental_evaluate; use jev-latest as an evaluation model.

Agent tooling

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

  • fast-jev-compaction - 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.
  • foreman (site, post) - Software Factory Foreman: an agent supervisor that uses Jev decisions to keep coding agents on task.
  • jev-review (devagrawal09) (post) - A staged code-review workflow and local dashboard built with TypeSafe Jev.
  • jev-search (site) - Search the web with TypeSafe's Jev: source selection, query understanding and relevance ranking. Built with Search1API.
  • jev-router (gargpratyush) - Route to the cheapest model in claude code for your task using jev-router.
  • jev-review (NiazMorshed2007) - Local-first MCP plugin for continuous software-quality review by AI coding agents, powered by Jev.
  • jev-mcp (jkudish) (post) - Proof of concept MCP for Typesafe's new Jev AI model.
  • typesafe-mcp (post) - Go CLI and single-binary MCP server exposing TypeSafe judgments to Claude Desktop, Claude Code, and Codex.
  • building-with-jev-skill - A skill for writing and improving programs that call Jev, TypeSafe's System One model.
  • jev-pruner - Claude Code plugin: trim long Bash output with TypeSafe Jev before the model sees it.
  • pi-jev (y0usaf) - TypeSafe Jev as a decision layer for the Pi coding agent: a measured tool-call gate plus jev_ask for typed, calibrated answers.
  • pi-warden - 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.
  • JevRouter - A lightweight Jev-powered router for models, tools, and subagents.
  • jev-code - Bounded TypeSafe Jev workflows for coding agents.
  • jev-codex-router (post) - Per-turn model & reasoning routing for Codex, driven by Jev (TypeSafe System One): picks the model, thinking depth and speed mode for every turn.
  • skillranker - 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.
  • hono-jev-router - Route HTTP requests by meaning. A semantic router for Hono powered by Jev.
  • ask-jev-skill (post) - Skill for Hermes, and other agents, to ask typesafe's jev.
  • jev-recruiter - A Jev powered LinkedIn recruiting agent. Watch it browse relevant profiles, save links, and review evidence against your hiring brief.
  • grok-bot-jev - Connect TypeSafe Jev to Grok Bot as a cheap decision layer - usage gates, skill template, examples.
  • winnow (post) - A calibrated context sieve for Claude Code: every tool result is judged by a System One model before it enters context.
  • snifftest (site) - A prose linter that sniffs out AI writing tells. Zero dependencies, countable rules plus one judgment model.
  • jev-mcp (burnigtm) - MCP server that puts TypeSafe Jev on the coding loop in Cursor, Codex, and any MCP client.
  • pi-jev (TheoOliveira) - Semantic tool routing and typed System One decisions for the Pi coding agent using TypeSafe Jev.
  • 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.
  • jev-axi (site) - Agent-ergonomic CLI for TypeSafe's Jev: fast calibrated judgments (pick, rate, check, rank, triage, guard) from the shell.
  • pi-jev-auto-mode - 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.
  • 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.
  • jev-recall - Retrieve by relevance, not resemblance: filter an AI assistant's memories with TypeSafe's Jev.
  • is-malicious - Scans a codebase for covert, deceptive, or data-stealing behavior with Jev, then reports suspicious files and line ranges before the user runs it.
  • jev-seo (site) - 100% free ₹0 agent-first SEO & GEO CLI suite and MCP server in Rust replacing Semrush and OpenSEO via DuckDuckGo and TypeSafe Jev System One.
  • jev-skill-suggester - 用 TypeSafe Jev 推荐已安装 Skill / Bounded installed-skill recommendations with TypeSafe Jev. Python CLI, Codex skill, bilingual docs and live examples.
  • jev-belay - Claude Code Stop hook that blocks an unverified done: reads the transcript for evidence, asks Jev once, fails open on everything else.
  • jev-mcp (blakestone-x) (post) - MCP server for TypeSafe Jev: typed classify, score, check, match and screen for any agent, with confidence on every answer.
  • jgrep - 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.
  • jev-cli (Nasrallah-AL) (site) - Command-line tool for TypeSafe's Jev AI model.
  • jev-guard - Prompt-injection and dangerous-action guard for coding agents (Claude Code, Codex, pi, ACP), powered by Jev.
  • pi-jev - Jev-assisted file retrieval and request caching for faster Pi workflows.
  • jev (BorisLeMeec) - A claude code plugin for jev.
  • JevLint - Configurable semantic linting powered by Jev, with file-level NOUL judgments and a magic-strings plugin.
  • jevwire - Jev decision layer for agents: MCP server, embeddable DecisionModel library, and an escalate-only Claude Code plugin (TypeSafe AI's Jev).
  • patdown - Typesafe's jev as a "fuzzy linter". give your code an ocular patdown.
  • jev-use (site) - 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.
  • hermes-jev - Typed System One decisions, ranking, verification, and an opt-in Hermes tool gate using TypeSafe Jev.
  • hermes-jev-approvals - 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.
  • jev-agent-skill-router - Typed, confidence-aware agent skill routing with TypeSafe Jev.
  • 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。
  • pi-quiet-ask - TypeSafe Jev as the pi coding agent's quiet decision layer.
  • typesafe-skill-router - 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.
  • jevscape - RuneBench harness for TypeSafe's Jev: bounded action catalog, tick-mode controller and a live dashboard.
  • omp-jev-compaction - Verbatim Jev-scored context reduction for omp, over TypeSafe or OpenRouter.
  • pi-jev-router - Automatic model routing for Pi using TypeSafe's Jev through Vercel AI Gateway.
  • pi-jev-sentinel - Pi coding-agent extension: TypeSafe Jev checks for tool calls, tool outputs and replies (prompt injection, approvals, secret scrubbing, task pinning).
  • clean-code-review (site) - 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.
  • jev-superpowers - Systematic software development framework for AI coding agents upgraded with TypeSafe Jev System One typed decisions.
  • jev-mcp (arunav25) - Connect JEV to MCP clients and compare its judgments against general-purpose LLMs using shared datasets and measurable accuracy.
  • pi-fast-jev-compaction - Pi extension: verbatim context compaction with TypeSafe Jev decisions.
  • riff - A small, fast prose linter: ruff-style rule codes for writing, backed by TypeSafe's Jev model.
  • bicameral - Hybrid coding harness: System 2 writes, System 1 (Jev) runs reflexes.
  • diffjury - DiffJury — TypeSafe Jev PR risk router + code review coach.
  • jev-mcp (rashedInt32) (site) - MCP server exposing TypeSafe Jev as typed, calibrated judgment tools: classify, score, check, batched ask. Ships as a Claude Code plugin.
  • jev-pref - Turn your AGENTS.md preferences into a fast, Jev-powered AI linter.
  • jev-router - Cost-aware LLM router that picks the cheapest model capable of handling a query, using TypeSafe's Jev for fast classification instead of an LLM call.
  • slidepilot - Voice-driven semantic auto-advance for Slidev, powered by Cloudflare Agents and TypeSafe AI Jev.
  • Canny - Stops AI coding agents from claiming work is done without evidence. Deterministic hooks decide, TypeSafe's Jev advises. Append-only ledger, zero runtime dependencies.
  • fast-dev-compaction - Codex plugin: verbatim Jev-guided context restoration around session compaction. Port of tamaratran/fast-jev-compaction to Codex lifecycle hooks.
  • hermes-jev-plugin - TypeSafe Jev (System One) decision tools for Hermes Agent: jev_check / jev_route / jev_score / jev_evaluate.
  • jev-judgment - Agent Skill: send closed coding-agent judgments to TypeSafe Jev.
  • jev-router (prismhq) - Open-source LLM router that uses TypeSafe's Jev to pick a model, on top of LiteLLM.
  • jevex - Minimal agent loop where Jev directs control flow and a LangChain chat model writes argument values and the final response.
  • 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.
  • pi-jev (iefnaf) - Pi extension suite powered by Jev: selective context compaction and model routing.
  • typesafe-cli (geilt) - CLI and agent skill for TypeSafe System One (Jev): typed Choice, Score, and Noul judgments.
  • actiongate-jev - Runtime authorization and guardrails for AI-agent tool calls with deterministic policy and TypeSafe Jev via OpenRouter.
  • ailerix (site) - Type-safe model router. Jev (System One) banks each request to a typed catalog route.
  • clear-head - Claude Code Stop hook that checks an AI assistant's claims against what it actually read this session, using TypeSafe's Jev as the judge.
  • construct-auto-classifier (site) - Effect-based safety gate for AI coding agents' shell commands (OpenCode, Antigravity): fast structural rules, then TypeSafe's Jev or a chat model judges what a command does. Certified with Jev at zero dangerous commands allowed.
  • dsh-jev - Jev (System One decision model) plugin suite for DeepSeek Harness (dsh).
  • git-jev-stage - Select Git changes for staging with a plain-language description.
  • jcm-router - Local proxy that picks the Claude model and effort per message using TypeSafe Jev. Routes subagents, leaves your cached main chat alone.
  • 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.
  • jev-decisions (site) - Safety checks for Hermes and other AI agents before they act, ask for approval, or verify a change.
  • jev-model-router (lucianfialho) - Cost-optimized OpenRouter model router using TypeSafe's Jev, with a live full-catalog scorer instead of a hardcoded model list.
  • jev-shield - 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.
  • jev-skill-gate - 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.
  • jev-system-architect (post) - System-architecture skill for TypeSafe AI Jev/System One — find fuzzy semantic judgment and turn it into small Choice/Score/Noul primitives.
  • 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.
  • jevkit - Fast Rust CLI for TypeSafe Jev: typed decisions, offline linting before you pay.
  • JevPromptCoach - Claude Code plugin that scores how well you prompt a coding agent, and shows whether your habits are improving. Runs on TypeSafe's Jev model. Zero added latency.
  • jevprune - Filter command output for coding agents using a task description.
  • mastra-jev-moderation - Input moderation for Mastra agents on TypeSafe Jev — one file.
  • pi-fast-jev-compaction (KamilPostrozny) - Fast JEV compaction extension for pi.
  • pi-jev-context - Reversible context pruning for Pi, powered by TypeSafe Jev. Keep useful context without deleting session history.
  • 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.
  • skill-router - Tell Claude Code which installed skill a session needs, using Jev (TypeSafe AI) for the decision and skills.sh for discovery.
  • 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.
  • todo-jev - ⚡ Ultra-fast, low-cost intelligent task classifier and 3-tier routing engine powered by TypeSafe Jev (System One).
  • typesafe-migration-guard - Automated database migration safety reviewer powered by TypeSafe AI (Jev System One model).
  • 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.
  • windows-save-token-jev-setup - Windows Codex Skill：通过 npx 或 Git 安装，安全配置 save-token-jev 的 PreCompact/SessionStart Hooks，并提供信任、原生压缩与旧内容隔离验证。
  • agent-chaperone (site) - Screens an AI agent's tool calls before they run and tool results before the agent reads them. An MCP proxy plus a hooks adapter for a client's built-in tools.
  • Antigravity-mcp-semantic-search-with-TypeSafeAi - Fast semantic code search & diff sanity auditor for AI coding assistants (Antigravity, Cursor, Claude Code) powered by TypeSafe System One.
  • ask-jev - Utilizing Jev, the RLCD-type model provided by TypeSafe AI, to independently and cheaply judge agentic coding sessions.
  • dgui-hypermem (site) - DGUI-HyperMem (DeckerGUI HyperMemory) - self-hosted hybrid memory MCP server on Cloudflare Workers with a JEV (Choice/Noul/Score) reasoning layer and a HuggingFace training-brain flywheel.
  • instruct-jev (site) - INSTRUCT_JEV - TypeSafe AI Jev / System One instruction corpus (choice/noul/score), compiled by DeckerGUI. 119 rows. Mirrored on HuggingFace.
  • jev-git (site) - Sub-second Git pre-commit & pre-push semantic reflex gate powered by TypeSafe AI Jev.
  • jev-model-router (site) - Jev (TypeSafe) model router on the Vercel AI Gateway.
  • jev-model-router (Mandrilsquad1441) - Pick the best AI model and reasoning effort for any task in ~1s. Plugin for Claude Code, Claude Desktop and Codex, powered by TypeSafe's Jev decision model and live OpenRouter pricing. Balance intelligence, speed and cost, or choose your priority.
  • jev-organize (site) - Throw in a pile of company files and get them classified and organized by department, type, sensitivity, date, counterparty and PII, with an index for AI agents. Powered by TypeSafe's Jev on OpenRouter (17¢ per 1,000 files). Zero-dependency Node CLI + Claude skill + Codex agent.
  • jev-predict-skill - Predict another skill's next closed decision with TypeSafe Jev — without running that skill.
  • jev-scout (site) - Zero-hallucination open-source repo and crate scout powered by TypeSafe AI Jev System One scoring.
  • jev-skillful - 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.
  • jev-triage - Uses typeful jev, zero sync to pull and sync large repositories for issue triage.
  • limpet - A Stop hook that stops your coding agent from stopping too early. Plain-language rules, judged by jev.
  • omp-typesafe - TypeSafe AI (Jev) adversarial reviewer and typesafe_ask tool for the omp coding agent.
  • stepwarden - Every tool call your agent makes, checked before it runs. A Claude Code plugin that uses TypeSafe AI's Jev to verify each pending tool call against the session plan, then allows it, asks you, or blocks it. Proof of concept.
  • agent-gate-loop - Reusable GitHub Action: agent fix loop gated by checks, an AI reviewer, and TypeSafe Jev.
  • agent-handoff-gate (post) - Experimental protocol for evidence-aware agent handoffs, with Jev-assisted review before results reach the lead agent.
  • check-risk - A CLI and GitHub Action that assesses code-change risk using deterministic rules and TypeSafe Jev, recommending checks and reviewers before merge.
  • frost (site) - A flexible and configurable CLI model router using TypeSafe Jev.
  • hermes-jev-router - Experimental Hermes plugin: Jev-assisted model routing plans with budget and capability constraints. API access pending.
  • jev-builder-loop - Grok skill: Jev as a judgment sensor in a builder-agent loop (priors × probabilities → next act).
  • jev-review (thiago-ss) - Autonomous Jev pull-request review with typed decisions, calibrated approval gates, and trusted-owner escalation.
  • omp-jevens-classifier - Jev-powered model-judged permission gate for OMP (TypeSafe System One).
  • pi-agent-foreman (site) - Send Pi agents back to work when they stop before the job is done.
  • pi-jev-code - Single-agent Pi coding coprocessor with Jev semantic gates, baseline-to-current diff review, and append-only observability telemetry.
  • pi-typesafe - Pi coding-agent extension built on the TypeSafe AI System One API (Jev).
  • pi-typesafe-jev - 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.
  • switchboard - Guardrail + model router for LLM gateways on TypeSafe's Jev (System One model), with an independent accuracy/calibration/latency evaluation. Stdlib Python.
  • typesafe-demo-mcp - MCP server exposing TypeSafe System One judgments (noul, choice, score) as agent tools.
  • typesafeai-review - Using Typesafe.AI to generate diff reviews.
  • zcode-jev - Typed judgment layer for coding agents — gates from PRD to ship. Jev-ready, provider-agnostic.

Browser & computer use

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

  • Jev Ultrafast (site, post) - 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.
  • typesafe-computer-use (post) - Computer use for about $0.0002 a step: OCR the screen, classify the next action with TypeSafe, click. macOS.
  • mobile-jev - Standalone Android agent for Mobilerun where Jev makes every decision, with a live React studio and an Uber demo.
  • jev-browser-use - 5–10x faster browser operations: Jev clicks, Codex thinks and verifies. Built at EZCollegeApp.
  • jev-browser - Browser use using Typesafe's Jev model.
  • unclutter (post) - WXT browser extension: Jev-powered page clutter removal with reusable template rules.
  • 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.
  • hermes-jev-skills - Jev-powered model routing, memory, compaction, skill selection, computer and browser use for Hermes agents (also Claude Code and Codex).
  • typesafe-adblock - 🧹 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.
  • vibecheck - Chrome extension: vibe-check your X posts with TypeSafe's Jev before you hit Post.
  • jev-browser (Ying-Kai-Liao) (post) - Browser automation where an LLM plans and Jev (Typesafe System One) decides. Library, CLI and MCP server.
  • Jevbridge - ACP and MCP adapter that bridges TypeSafe Jev with any LLM — computer use and typed decisions alongside Codex, Claude, Grok, and OpenCode.
  • jev-reviewer (site) - Data extraction for systematic reviews, quoted from the papers. Ask a trial report and its supplements your extraction form or a RoB 2, ROBINS-I, QUADAS-2 or TIDieR template; Jev points at the lines, every answer is a verbatim quote with its page, you check it and export the table. Files stay in your browser.
  • jot - The first general-purpose System One agent for Jev.
  • jev-social (site) - Jev-powered social media research through the socai CLI.
  • x-scanner - Chrome extension that labels every post you scroll past on X with typed Jev judgments and a live cost counter.
  • live-jev - 2D autonomous car simulation in the browser, driven by TypeSafe's Jev decision model.
  • jev-ego - TypeScript browser agent for ego lite: Jev Ultrafast indexed actions, TypeSafe Jev decisions, persistent observe/act CLI. No Chrome or Playwright.
  • 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。
  • 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.
  • AskJev (site) - AskJev — Jev autopilot for any website + guard on irreversible clicks (TypeSafe System One, not Claude).
  • jev-cookbook (site) - Practical, tested recipes for TypeSafe's Jev decision model on OpenRouter: support triage, database indexing, file organizing, tagging, taxonomies, dedupe, PII detection, extraction, search re-ranking and a browser agent.
  • jev-ultrafast-mcp (site) - Hand the browser work off: an MCP server where a decision model drives the page for your agent, so a flow costs one tool call instead of a turn per click. Ref-based element tables, code-checked assertions, zero-model macro replay. Speaks CDP to your Chrome.
  • sift (bohutang) (site) - 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.
  • aside-jev - Aside agents decide with TypeSafe Jev (System One: Choice/Score/Noul). Not a Cua binding — Jev is the model, Aside is the browser runtime.
  • jev-browser (vinilana) - Hybrid browser harness: an LLM turns goals into verifiable subgoals, Jev chooses each action and DOM field, Playwright acts.
  • computer_use - MacOS computer use driven by Jev (TypeSafe System One) as the decision maker.
  • jev-block-android-ad - JevNoiseGate filters unwanted notifications and SMS on Android. Rather than matching keywords, an LLM decides what's noise — and only what it explicitly flags is blocked. Verification codes are matched on-device and never uploaded; anything uncertain passes through.
  • jev-browse - Drives a real browser with Jev making every decision and Vercel's agent-browser performing every action, with a benchmark.
  • jev-browse (0x7067) - Browser automation with Jev (TypeSafe) as decision model.
  • jev-mail - Chrome extension that triages Gmail with TypeSafe's Jev model: category, priority, spam % and reply % on every email.
  • jev-windows-voice - Türkçe ve İngilizce doğal konuşmayla Windows 10/11 bilgisayar kontrolü: OpenAI Realtime, local Whisper, Jev, UI Automation ve Playwright.
  • jev-yt-time-saver - A Chrome extension that covers distracting YouTube videos with Jev. Show anyway whenever you want.
  • jev-browser (tontoko) - One grounded Jev/Playwright core: typed SDK, persistent CLI, and MCP server with native browser operations and deterministic assertions.
  • jev-builder (site) - A browser form for building requests to TypeSafe's Jev: pick a template, fill in the blanks, copy the request. No JSON, no install, runs locally.
  • jev-frontend-qa - Evidence-driven frontend QA built on Jev Ultrafast and Browser Harness, with a synthetic todo demo.
  • jev-mobile - Fast structured Android control loops with TypeSafe Jev and Mobile MCP.
  • jev-shield (vmendes90) - Privacy-first Chrome extension that semantically blocks native ads, sponsored feed cards, and video ads using TypeSafe Jev.
  • jevarena - JevArena — two Jev agents duel in click-only browser games (Browser Use + TypeSafe Jev).
  • JevOnly - Pure Jev that can "type" and drive towards task completion.
  • keys-MiniMax-Code-CLI-Browser-Scroll-Context-Enhancement-Pack-with-Jev-Ultrafast-Integration - Validated enhancement pack for MiniMax Code CLI on arm64 DGX Spark + local GLM-5.3-EXL3: TUI scrollbar + context-meter patches, compaction repair for local vLLM, Jev Ultrafast + Playwright MCP browser integration, real usage ledger.
  • otto - Open-source native computer use for macOS and Windows: TypeSafe Jev, local OCR, and selective planning.
  • turbo - Jev-powered semantic browser use.
  • Winnow (site) - 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.
  • almond-fastloop - Almond-fastloop: Almond's browser computer-use rig (Chrome DevTools + TypeSafe Jev), and the Browser Use Olympics benchmark it is measured on.
  • barrunto - A Chrome extension that brings TypeSafe's Jev to X.com to analyze posts as you browse.
  • Cerebellum-2B (site) - Non-Autoregressive AI Agent Decision Model. Open-source SOTA alternative to TypeSafe Jev. O(1) Tool Routing & DOM Automation on Qwen3.5-2B .
  • jev-ra (site) - Browser use for coding agents, 3-5x faster than browser-use. MCP server + CLI; TypeSafe Jev decides every step in ~300 ms.
  • jevcumber (site) - Write Cucumber tests with just the .feature file. No step definitions — Jev (TypeSafe AI) resolves each Gherkin step and Playwright runs it.
  • jevplayground (site) - Browser-only playground for Jev (TypeSafe AI's decision model) via Vercel AI Gateway.
  • psearch - Parallel web search for terminals and agents, with local Chromium and Jev-guided exploration.
  • browser-use-olympics - 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).
  • jev-browser (KesavanKing) - Local browser automation UI that uses TypeSafe Jev to choose bounded page actions and a text model only for field values.
  • jev-browser (MahmoudAdelbghany) - Jev-powered browser MCP for LLM agents — ~300ms decisions, no LLM tokens in the loop. Benchmark vs Playwright MCP included.
  • jev-playwright-mcp - 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.
  • JevTest (site) - Bounded exploratory browser testing with Jev, deterministic assertions, and replayable evidence.
  • sift - Chrome extension that re-ranks Google results with TypeSafe Jev and folds away sales pages and SEO filler.
  • sloppy-jevs-extension - Open-source Chrome extension that filters AI-generated prose and ads with Jev.

Applications

Products, tools, and pipelines that call Jev.

  • jev-trader (site, post) - One AI trade decision every Monad block. Jev on Kuru MON-USDC.
  • simple-jev - Turn any open model into a classifier/jev endpoint.
  • notra (site) - Marketing analytics platform whose feature flag routes brand-visibility classifiers off an LLM and onto Jev boolean decisions.
  • jeff - A self-hosted drop-in replacement for TypeSafe's jev, powered by GliFormer.
  • jev-semgrep - Grep by meaning, across languages. TypeSafe Jev scores every line against a meaning; combine meanings with AND/OR/NOT. 意味で探す grep。日本語で英語を、英語で日本語を検索できる.
  • jevmeter (post) - Put a live Jev (TypeSafe) meter on any video: every sentence scored, rendered as a 16:9 edit.
  • Jev-Moderation-Bot - Real-time Discord moderation bot: Jev evaluates messages and metadata in parallel to catch phishing, spam, and social engineering with a progressive escalation ladder.
  • jev-trade (site) - Live Jev trader on Hyperliquid.
  • jev-voice - Talk to your Mac. Local whisper.cpp + one Jev (TypeSafe) call per command + macOS automation.
  • commit-miner - Classify Git commit diffs and messages with Jev. Bug fixes, security fixes/CWEs, and change types.
  • LLM2Jev - Adapt local language models into Jev-compatible structured decision engines with Choice, Score, and Noul outputs powered by prefill-only binary inference.
  • blink (post) - Codebase search powered by Jev from @typesafe-ai.
  • refgarden - A spatial reference explorer for creators. Local Jev query choices, metadata highlights and source-linked collections.
  • jev-mac-voice - English full-duplex voice control for macOS with OpenAI Realtime, native Accessibility, and Jev.
  • Jev-Trades (site) - Trading bot with the all new TypeSafe AI's first system one model named as Jev.
  • invalidate - The invalidation layer for AI memory. Every fact gets a lease; new evidence ends it. Built on TypeSafe Jev.
  • jevocks (site) - Everyday Stocks Status with Jev.
  • jev-mail-classifier - Classify your inbox with Jev (TypeSafe's System One model) — tag, move, flag, and notify, all config-driven.
  • jevlogs - Open-source Jev log triage for OpenTelemetry. Score the signal before expensive LLM analysis.
  • jev-gmail-ai-spam-filter-and-labeling - Self-hosted AI email classifier for Gmail powered by Jev. Create custom labels, organize your inbox, and filter spam with confidence and cost controls.
  • jev_jsonschema - Run a JSON Schema through TypeSafe's Jev API, and get JSON back.
  • jev-cli (tumf) (site) - Small dependency-free CLI for TypeSafe Jev.
  • jev-rerank - Use Jev (TypeSafe's System One model) as a calibrated reranker: one call, up to 30 documents, a probability per document. Apache-2.0.
  • semdecide (post) - Typed semantic decisions for Unix pipelines and CI, powered by TypeSafe AI Jev.
  • ai-elo-ranker - High-speed recursive AI Elo tournament engine powered by Jev and Swiss matchmaking.
  • jev_antispam_bot - Minimal grammY Telegram anti-spam bot powered by TypeSafe Jev.
  • jev-grug - Helping JEV speak <3.
  • jev-pr-labeler - Semantic GitHub PR labels using Jev's typed decisions, with conceptual scope instead of line counts.
  • typesafe-cli (y0usaf) - Ask Jev typed questions from the shell: noul, choice, and score answers as numbers, not prose.
  • ai-provider-for-jev - Connect WordPress to TypeSafe's Jev System One model for structured decisions (choice, score, noul).
  • every - 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.
  • jevify (Mintzs) - An optimized inference engine to turn LLMs into Jev-like machines: optimized for quick, lightweight, and accurate decision-making, classification, and scoring.
  • jevsql - SQL with natural-language predicates, powered by TypeSafe's Jev. Filter, rank, classify and score rows by meaning — batched, cached and cost-guarded.
  • smart-switch - Reimagined window switcher for macOS using frontier artificial intelligence. Predicted by TypeSafe's Jev model.
  • btc-jev-signal - Experimental multi-horizon BTC signal generator using TypeSafe Jev probabilities and Binance market data.
  • citation-verifier (site) - Check whether each cited paper supports the sentence citing it. Claude proves the quote, TypeSafe's Jev scores it, a human decides.
  • jev-cvss - Fast CVSS scoring from vulnerability descriptions using Typesafe Jev.
  • 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.
  • jev-tree (site) - Recursive Jev choice over a taxonomy. Select from more than 255 options without breaking TypeSafe Jev's choice cap.
  • jevibe-check - A live tone labeler for Bluesky posts and drafts, using TypeSafe's Jev API.
  • typesafe-jev - Screen a folder of CVs with the TypeSafe Jev decision model: typed judgments, an editable policy, free re-scoring.
  • commentcop - Put your code comments on trial. Powered by Jev.
  • Jackalope (site) - 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.
  • jev-audio-beeper - Low-latency audio censorship POC using Jev typed decisions and ffmpeg.
  • jev-cli - CLI for TypeSafe AI's Jev evaluation model — typed questions in, structured JSON answers out.
  • JevTicktRouter - A .NET 10 and React 19 application for fast, structured AI-powered ticket triage using TypeSafe Jev.
  • qualm - 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.
  • dmx.to (post) - X client with Jev smart rules that filter the timeline by usefulness, type, and topic.
  • draftpulse - Experimental: live X draft viral scorer powered by TypeSafe Jev.
  • emoji-jev - Emoji autocomplete at the speed of typing. TypeSafe AI Jev on a Whop-hosted TanStack Start app.
  • Jev Classifier (post) - Local Telegram channel JSON analyzer for intent, quality, sentiment, and speaker tone.
  • jev-resume-analyzer - CV diagnostics and job alignment with TypeSafe Jev, React and FastAPI.
  • jevegis (site) - Guardrails for LLM apps in one API call. Prompt injection, jailbreaks, leaks, unsafe content. Built on TypeSafe Jev. MIT.
  • mimicry - Rewrite AI drafts in your own voice with a bounded TypeSafe feedback loop.
  • pkg-gate (site) - Pre-install security gate for npm lifecycle scripts using TypeSafe System One.
  • s1s (site) - System One Search: navigate and trace code with TypeSafe judgments and repository evidence.
  • scam-shield (site) - Scam text message filter powered by TypeSafe's Jev model.
  • transcript-scorecard - ACME live support-call scoring demo with TypeSafe AI, Effect, SQLite, React, Vite, and Turborepo.
  • typesafe-comment - Small Python package that uses typesafe.ai to evaluate code comments on certain heuristics.
  • typesafe-triage-guard - Three composable judgment pipelines on TypeSafe's Jev: support-ticket triage, observability alert triage, and a deploy-risk gate.

Games & simulations

Games and simulations with Jev making the moves.

  • typesafe-mario - A TypeSafe/Jev agent that plays Super Mario Bros. from structured emulator state.
  • jev-drone - Camera-only autonomous drone in MuJoCo with a small judgment model (TypeSafe Jev) in the loop at 2.5Hz.
  • embodied-jev - EmbodiedJev: MuJoCo robot decision workbench with MiniCPM5-2B, Jev and compatible model APIs.
  • jev-libero (site) - Fine-grained robot control with Jev, physics previews, and configurable LIBERO tasks.
  • typesafe-snake - Snake auto-played by TypeSafe's Jev model: one System One choice per tick, legal moves and facts generated in code.
  • tsai-sc - TypeSafe Jev controls original StarCraft shareware through keyboard and mouse with recorded action probabilities.
  • mario-jev - Python prototype that plays NES Super Mario Bros. from structured RAM observations, with Jev answering focused movement and jump questions.
  • Jev Driving Lab (post) - Interactive experiments from support routing to a 3D driving simulation: structured sensor state in, typed steer, brake, and overtake decisions out.
  • jev-reflex-autonomy-lab - Multi-drone autonomy lab demonstrating TypeSafe Jev reflex decisions with optional System 2 strategy guidance.
  • heist-one - Observable browser stealth game: Jev makes typed guard judgments while deterministic code owns the world.
  • jev-askable-arm - Zero-shot English goals on a sim Franka. Jev chains hardcoded primitives.
  • jev-tetris (trungdq88) (site) - Jev play Tetris in real-time against other AI models.
  • OneVOneJev - 1v1 Jev quickscope arena — Three.js + TypeSafe System One.
  • jev-doom-agent - A browser-native Doom agent experiment with structured spatial state, composable AI controls, live decision telemetry, and a Chocolate Doom WebAssembly runtime.
  • jevball (site) - 22 Jev models, one ball: a 3D football match where every player is its own Jev (TypeSafe AI System One) decision. Watch, or take over the number 9.
  • gg-friggin-ez (site) - 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.
  • hundred - 100 AI NPCs live in a tiny town. Jev chooses the next action; the world writes the story.
  • jev2048 (erhanmeydan) - TypeSafe'in Jev karar modeli gerçek bir online 2048 sitesinde oynuyor — hamle başına tek API çağrısı, tek anahtar.
  • jev-gomoku (XieChengYuan) (site) - 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。
  • jev-play-ping-pong (site) - Jev plays browser table tennis in real time: structured telemetry, typed decisions, ordinary Chrome inputs, and auditable evidence.
  • jev2048 - Let Jev (TypeSafeAI) solve 2048.
  • rubikjev (site) - Challenge the Jev's intelligence in Rubik Cube puzzles.
  • tsai-civ2 - TypeSafe Jev plays original Civilization II in a browser, with live action probabilities. Experimental full-game harness.
  • typesafe-minecraft-demo - A Minecraft Java player controlled by TypeSafe AI, with live decisions, Canadian flag building, and a side-by-side dashboard.
  • Agent-JEV-Tetris - Using the new model JEV to play the game tetris.
  • beatjev (site, post) - Browser game: try to beat Jev at spotting a spam message.
  • casse-brique-typesafe - A Next.js brick breaker whose paddle is controlled in real time by TypeSafe AI's Jev model. Built with Claude Code.
  • chess-jev (post) - 3D chess where Jev plays both sides, or you jump in.
  • cyber-breach-jev - Cyber-Breach: The Jev Protocol - A tactical cyberpunk arena combat game powered by TypeSafe AI Jev System One decision model.
  • Game Plan (post) - 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.
  • Jev Arcade (post) - Krunker-style 1v1 FPS where Jev decides move, aim, ADS, fire, and jump at about 9 Hz.
  • Jev board games (post) - 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-bfs - Wikipedia link races with direct Jev ranking and a live terminal display.
  • jev-games - Visual Jev lab for multiple games and emulator platforms.
  • jev-gomoku - MoonBit client for Jev plus a Jev-vs-Jev gomoku match, with timing logs.
  • jev-snake - 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.
  • jev-t-rex-runner (site) - Chrome dino game played by Typesafe AI Jev model.
  • jev-tetris - A visual TypeSafe demo where Jev chooses verified Tetris placements.
  • jev.mods - Minecraft mod where Jev tries to finish the game from scratch without a scripted route.
  • last-exit (site) - A cyberpunk border encounter powered by TypeSafe Jev. Bluff the guard. Inspect the receipts.
  • pdoom-protocol - USER + JEV: P(DOOM) PROTOCOL — co-op platform shooter where TypeSafe Jev plays alongside you.
  • pong-jev - TypeSafe's Jev plays Atari Pong. One typed Choice question per frame, no coordinates sent to the model.
  • ps2-ai-agent - Autonomous PlayStation 2 AI Agent with real-time visual telemetry HUD powered by TypeSafe Jev System One.
  • river-oaks - NPCs of River Oaks Houston, Texas using Jev to power NPCs.
  • river-run-typesafe - River shooter game in Python, inspired by Atari's River Raid, played by a TypeSafe AI pilot.
  • roverlab - A 3D planetary rover sandbox for experimenting with autonomous decisions using TypeSafe AI.
  • shady-town - Shady Town: social-deduction party game for the living room TV, moderated by TypeSafe Jev.
  • siege (site) - 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.
  • snake-jev - Snake controlled by parallel Jev assessments, with one API call per game tick.
  • terrarium - A sandbox where a TypeSafe System One model presses the controls of a small creature. Code runs the world.
  • typesafe-3d-chess - 3D chess powered by TypeSafe AI (Jev). AI vs AI by default, or play either side. Multiple difficulty levels.
  • typesafe-chess - Chess where both players are TypeSafe's Jev model: every move is a typed Choice decision.

Demos & playgrounds

Live demos and playgrounds.

  • jevcache (site) - A decision cache for TypeSafe Jev-class models — memoize decisions so repeats are free, deterministic, and shareable. One 2 MB binary.
  • killmyidea (site) - Describe your startup idea. Jev decides: kill it, fix it or ship it.
  • typesafe-ai-playground (BunsDev) (site) - Community TypeSafe AI playground: 110 use cases, games, dilemmas and model challenges, with editable prompts, A/B comparisons and a mobile-friendly UI.
  • jev-me - A grill-me style interrogation of your idea, with Jev doing the grilling.
  • flue-jev-demo - Flue agent routing with TypeSafe Jev through Cloudflare AI Gateway.
  • Instinct (site) - Instinct: describe a case in free text and Jev picks the UI from a fixed catalog without generating a line of code or copy.
  • 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.
  • jev-spring-boot-starter - A simple Spring Boot 4 starter for TypeSafe Jev using Spring MVC and RestClient.
  • typesafe-ai-playground - Community TypeSafe AI playground: 110 use cases, games, dilemmas and model challenges, with editable prompts, A/B comparisons and a mobile-friendly UI.
  • clarity-judge (site) - Multi-axis writing quality checker powered by TypeSafe AI's Jev model. Separate named checks, each with its own verdict and confidence.
  • intelliprompter (site) - A teleprompter of talking points that checks each one off as you cover it, using TypeSafe's Jev Score questions.
  • jev-notion - 🚀 Blazing-fast native macOS menu bar companion for Notion. Pure Swift & SwiftUI (<3MB), 8 languages.
  • jev-system-one - A polished OpenAI + TypeSafe Jev terminal interface for answers with transparent decision reports.
  • Should AI Kill Us All? (site) - 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.
  • got-jev (site) - Jev (TypeSafe AI) PoC through Game of Thrones.
  • gpt-vs-jev (site, post) - Compare GPT generated language with JEV structured Noul decisions on the same input.
  • guard-jev (site) - Comment-moderation playground: paste a comment, Jev decides what to do with it.
  • harden-jev-decides - JEV picks which stream idea becomes the live MVP. TypeSafe System One decision board.
  • jev_projects (site) - List of projects that use typesafe's jev.
  • jev-cloud-quiz (site) - 三大クラウドの機能名を、TypeSafe AI の System One モデル Jev が確率つきで判定するデモ.
  • JEV-language (site) - Give your Jev language.
  • jev-pii-checker (site) - CLI that finds PII in text with TypeSafe Jev: presence, sensitivity, and located spans.
  • jev-playground (Little-Planet-Labs) (site) - A small Next.js app for experimenting with TypeSafe AI's Jev model (System One).
  • jev-ultralightspeed (site) - BRRRRRRRRRRRRRRRRRRRRRR.
  • toolgate (site) - Agent tool/MCP call gate — allow / ask_human / deny via TypeSafe Jev.
  • typesafe-ai-playground (markjaquith) (post) - A playground for experiments around Jev, TypeSafe's System One model.
  • typesafe-arena - A playground for TypeSafeAI's Jev Model.
  • cartshield (site) - CartShield — SMB checkout fraud disposition via TypeSafe Jev.
  • Crowdcheck - Test a post against 10,000 synthetic personas before you publish it.
  • extremely-specific-council (site) - Twelve members. Zero qualifications. A playful TypeSafe AI council with animated votes, inspectable decisions, and shareable verdicts.
  • harnessjudge (site) - Judge agent steps — ok / retry / escalate / stop via TypeSafe Jev.
  • hiresignal (site) - HireSignal — resume first-pass fit+interview via TypeSafe Jev.
  • human-compiler (site) - A compiler for human language. Paste text, get diagnostics. Measured by TypeSafe Jev.
  • Jev Gamecast (site) - Jev Gamecast: replay-first React app that asks Jev typed questions about live sports data.
  • 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-preflight - Typesafe/Jev public X demo.
  • jev-board-lab - Interactive explorer and Jev question workspace for Jev Board datasets.
  • jev-bun1 - TypeSafe の Jev を TypeScript SDK で使ってみる最初の 1 歩.
  • jev-demos - Demos to test the effectiveness of TypeSafe's "Jev" System One Model.
  • jev-dev - 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）.
  • jev-paper-judge (site) - Feedback on your paper in seconds.
  • jev-playground (wustep) (site) - Can a System One model steer music? Jev picks the plan (enums only); code renders sheet, audio and MIDI.
  • jev-should-i-apply - Typesafe/Jev public X demo.
  • jev-user-jury - Typesafe/Jev public X demo.
  • jevplay (site) - TypeSafe Jev playground — custom Choice/Score/Noul builder with live distributions.
  • Job Risk Analyzer (site) - Job Risk Analyzer: CLI and REST API that uses Jev to score an occupation's exposure to AI-driven layoffs and its resilience.
  • lanebreak (site) - LaneBreak — support ticket priority+routing via TypeSafe Jev.
  • mcpmatch (site) - Match user goals to MCP catalog (two-stage) via TypeSafe Jev.
  • Probably (site) - Probably: live BTC, ETH, and XRP prices with a shared TypeSafe buy-or-wait demonstration. No trades placed.
  • pulselane (site) - PulseLane — clinic triage decisions via TypeSafe Jev.
  • Search-Function-Test (site) - 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.
  • spendbrake (site) - Agent budget brake — continue / downgrade_model / stop via TypeSafe Jev.
  • swarmrouter (site) - Route tasks to research/code/browser/support/writer agents via TypeSafe Jev.
  • trustgate (site) - TrustGate — indie media T&S gate via TypeSafe Jev.
  • TypeSafe Typewriter (post) - Val Town demo where 16 typed judgments update live as you type.
  • typesafe-image-diffusion (post) - Diffusion-style pixel art out of a classifier: 256 parallel per-pixel Jev questions plus refinement passes.
  • Yes / No - Free, no-signup Noul demo. Ask a question, get yes, no, or maybe, with web search when needed.

Benchmarks & research

Benchmarks, evals, calibration studies, and open replicas.

  • SemIf (site, post) - Semantic ifs from open models, on a 3090 at home. Independent; not affiliated with Jev or TypeSafe.
  • jevlike (post) - 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.
  • jev-visual - An educational Jev-like visual inference experiment on Apple Silicon: shared context, direct candidate scoring, and local visual demos.
  • openjev (site) - Open, Jev-compatible System One decision server on DiffusionGemma.
  • openJev-verdict-2.0 (site) - Calibrated 151M Non-Autoregressive Decision Engine beating TypeSafe Jev & Laya on LocalLLaMA/typed-decisions (77.10% acc, 0.0636 Brier, 0.0144 ECE).
  • decider - One-pass typed decisions with calibrated probabilities (System One style model), fine-tuned from Qwen3.5-2B.
  • jev-eval-agent - 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.
  • reflex - A small open decision model: state + typed questions -> calibrated probabilities. A Jev / System One re-creation on Qwen3.5.
  • open-jev (daseinlabs) - One-pass option scoring with a local Gemma 3 4B on Apple silicon via MLX, inspired by jevlike, with a Doom demo.
  • von - The open-source System One decision model. Sub-15ms, non-autoregressive, local drop-in alternative to TypeSafe Jev.
  • jevmlx (post) - Jev-style parallel constrained decisions for any MLX model on Apple Silicon. Typed, schema-valid JSON in one forward pass.
  • typesafe-ai-benchmark (site, post) - This is a LLM Gateway that mimics typesafe ai structured output. Like an imposter Jev.
  • Verdict-open-jev - Non-autoregressive decision engine on ModernBERT (151M) with calibrated uncertainty (RLCD), TypeSafe AI Jev benchmark audit, and in-browser WebGPU playground.
  • mini-jev - 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.
  • LitJev (post) - 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.
  • jev-on-a-laptop (post) - 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.
  • jev-capability-atlas - Independent, evidence-based map of when TypeSafe's Jev actually holds up vs. breaks down — real API-call receipts, not a leaderboard. 中文為主的雙語 repo。
  • open-jev (JoshuaSP) - Typed JSON inference with DiffusionGemma, with Every and Jev benchmark results.
  • jev-as-a-judge - Using Jev as an evaluator.
  • open-alternative-jev (site) - Open alternative to Jev: typed, calibrated decisions from any open-weights LLM in one forward pass (HF + vLLM), with benchmarks.
  • openjev (zhihz) - Local bilingual probability decisions from context, questions, and candidate answers. Independent research preview inspired by TypeSafe Jev.
  • system-one - Batched single-token choice inference for open language models, compatible with TypeSafe.
  • jev_local - Replicating Jev with a local LLM.
  • jev-column-race (site) - Jev vs Gemini 3.8 Flash: labelling 1,000 app reviews, 4.1× faster and 7× cheaper.
  • system-one-open - Open replica of TypeSafe's Jev: typed calibrated decisions in one forward pass, on Gemma 4 E2B / Gemma 3 270M (Modal).
  • Jev_apps - 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.
  • jev-benchmarks - Probability-aware evaluation for typed decision models: calibration, selective risk, latency, and reproducible benchmarks.
  • jevbetter - 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.
  • TypeAR (site, post) - Type-safe one-decision-per-token decoding engine for autoregressive LLMs, inspired by Jev.
  • jevbench - JevBench v1 - a benchmark for Jev-class typed decision models: smart, cheap, fast, reliable, open.
  • jevify (site) - An agent skill to discover TypeSafe Jev opportunities, design typed questions, and learn from recent community experiments.
  • openvons (site) - 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.
  • jev_stock - An experimental JEV-powered framework for forecasting short-term stock price direction from structured market data.
  • jev-studio - If you're experimenting with jev it will be easier from here.
  • jevcal - Stop guessing confidence thresholds: calibrate, threshold, and drift-check typed decision models (TypeSafe Jev) against an LLM teacher.
  • jevfire (site) - JEV-inspired parallel decisions for CUDA LLMs. One context, many decisions. vLLM API, game-agent examples, and reproducible benchmarks.
  • jev-rag-benchmark - Reproducible benchmark for measuring Jev reranking quality, latency, and cost in RAG.
  • jev.nu - Nushell module for the TypeSafe System One API: typed decisions with calibrated probabilities.
  • jsort - Sort by meaning: order lines along a plain-English dimension, from pairwise comparisons judged by TypeSafe's Jev model.
  • 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.
  • Augustus (site) - Agent skill: design judgment-assisted systems with TypeSafe Jev (System One). Maps Choice/Score/Noul onto decision theory, reranking, and routing. Composition algebra, question design, validation gates. MIT.
  • jev-architect - Find, design, and evaluate TypeSafe Jev decision loops.
  • jev-harness - 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.
  • jev-korean-benchmark (site) - Reproducible early-access evaluation of Jev on Korean understanding and medical text, with runtime and cost evidence.
  • jev-lm - A word-level language model whose output layer is Jev: n-gram drafter, Noul chunk verification, bits-per-token eval.
  • LegalForecastBench - LegalForecast-MTD benchmark alpha and official evaluation workflows.
  • 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.
  • daf-jev - Daf-jev: composable Python toolkit for TypeSafe's Jev (System One) decision API — question builders, confidence gates, evaluator, calibration, CLI, MCP server, agent skill.
  • jev-align - Calibrated alignment verifier for LLM responses and agent plans — powered by Jev.
  • jev-curate (site) - 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).
  • jev-little-airways - A show-and-tell capability study for Jev, TypeSafe's System One decision model.
  • jev-search-rerank-eval - 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.
  • Jev - Unofficial TypeSafe Jev showcase — System One decisions, not chat.
  • jev-behavior-study - Independent Jev 1.13.0 behavior study: report, controlled prompt experiments, raw results, and offline verification.
  • jev-chat - A chatbot from typed Jev decisions: hierarchical speculative decoding over System One probabilities.
  • jev-cli (shaharia-lab) - Command-line tool for TypeSafe AI's Jev model. Ask yes/no, multiple-choice and rubric questions about any text and get calibrated probabilities back. Answers become exit codes for shells and CI, JSON for scripts, and MCP tools for AI agents.
  • jevtest (site) - Semantic test matchers for Vitest and Jest, powered by TypeSafe's Jev model. Write expectations in plain English, get calibrated probabilities back.
  • mcts-agent - Discriminative Monte Carlo Tree Search using TypeSafe Jev System One Primitives and Gemini.
  • OpenJev - OpenJev: an independent Jev-inspired System One decision API based on TypeSafe.ai concepts. Choice, score and noul primitives, local mock server, Python and TypeScript SDKs. Real inference planned; not affiliated with TypeSafe AI.
  • calibre - Calibration and confidence-based routing measured on Banking77: 80.2% accuracy at $0.103 per 500 decisions.
  • jev-benchmark - 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.
  • jev-codes (site) - Audit your git diff against YAML coding-standards packs using TypeSafe's Jev model, from a CLI or your AI agent's command/skill.
  • jev-exploration - Jev (TypeSafe) exploratory thread: claim audit, live demos, and runnable code.
  • jev-for-engineers - 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.
  • jev-gate - 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.
  • jev-mode - I kept watching coding agents burn context on decisions that aren't hard - triage 400 tickets, tag 600 files, route to one of six teams. jev-mode moves those verdicts to a typed-judgment model. I A/B'd it: 78% fewer tokens, 16x less work-attributable input, accuracy 96.1% vs 93.7%. Python, no deps, MIT.
  • jev-oas-sentinel - Catch breaking API behavior hidden in OpenAPI prose with deterministic checks and TypeSafe JEV System One semantic review.
  • jev-ood-calibration - Independent calibration test of TypeSafe's Jev on a task it cannot have seen: 900 rule-generated support tickets (choice / score / boolean) plus 3 public benchmarks via Vercel AI Gateway. Raw responses, ECE with noise floor, temperature refit, per-type sign of miscalibration. Reproducible for ~$0.06.
  • jev-phishing-bench - Jev (TypeSafe) vs Claude Haiku 4.5 on 2 000 phishing emails: accuracy, calibration, latency, cost. Reproducible benchmark.
  • jev-rerank-bench - 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.
  • jev-research-eval - Reproducible Jev Ultrafast research-browser eval harness + field note (QC’d cases, suite runner, report generator). Not investment advice.
  • jev-search (larguesa) - Experimental semantic line search with TypeSafe Jev via OpenRouter. Python CLI with no runtime dependencies.
  • jev-sec-bench (post) - Blind security benchmarks for Jev, TypeSafe's System One model: prompt injection and vulnerable code detection, built on jev-go.
  • jev-starter - Typed, policy-driven decision workflows on top of TypeSafe AI Jev: confidence routing, fallbacks, evaluation, and RAG patterns for TypeScript apps.
  • jevgpt - A chatbot built on a model that cannot generate text (TypeSafe AI's Jev, driven autoregressively).
  • new-api-plugin-typesafe - TypeSafe AI System One (Jev) task plugin for QuantumNous/new-api — native /v1/systemone, synchronous evaluation, token billing.
  • OpenJev (GPT-AGI) - Jev-compatible System 开源Jev.
  • ORIGIN-CIVILIZATION - AI life-and-civilization simulation: TypeSafe Jev makes every decision (typed, probabilistic, auditable); LLMs plan — OpenAI-compatible APIs, local models (Ollama, LM Studio), Claude Code, Codex.
  • qwen-rlcd - Jev-style calibrated decision model (Choice/Score/Noul) on Qwen3.5-0.8B.
  • research_desk - TypeSafe Jev demonstration for new analyzation — experimenting with Jev for fast analysis of news and tickers.
  • rh-guard (site) - Reward-hack radar for coding agents: structural denies + TypeSafe Jev System One sidecar for Claude Code & Cursor hooks.
  • siftr - Fast, cheap judgment for AI coding agents: semantic search, focused reads and list picking in ~2s. CLI + MCP server on TypeSafe Jev. Benchmarked on SWE-bench.
  • system-one-gemma - 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.
  • 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.
  • toolgate (RiskAverseTech) - Open auto mode for AI agents — a calibrated tool-call firewall powered by TypeSafe Jev. Ships as a Claude Code hook.
  • trade-jev - Backtest Jev (TypeSafe) as a BUY/SELL/HOLD trader on NQ L10 order-book data.
  • typesafe-chess (Dimesio) - FUn little experiment with Typesafe AI Jev Model playing chess against stockfish :).
  • zerosweep (site) - Autonomous System-One Triage Engine & Benchmark powered by TypeSafe AI (Jev). 75ms inference, $0 output tokens, and RLCD epistemic safety gates.
  • decisionbridge - A Jev-inspired decision interface for existing LLMs. Explicit choices, scores, calibration, and review thresholds.
  • jev-agent-failure-benchmark - Benchmarking Jev (Typesafe.ai) against a strong LLM on the Who&When Pro agent-failure-attribution benchmark (text subset).
  • jev-carryforward (site) - What your last session knew, scored against what this one is doing. MCP server: a per-project ledger written as things happen, recalled per task with TypeSafe's Jev evaluation model via Vercel AI Gateway.
  • jev-chess (site) - Chess moves, evaluations, persona opponents, and game classification with TypeSafe AI System One.
  • jev-freeform - An observable raw-character chat experiment powered entirely by TypeSafe Jev Choice.
  • jev-labs (site) - 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.
  • jev-reward-model-evaluation (site) - Jev 1.13 reward-model evaluation across 8 benchmark tracks, with an interactive report and 54-row SOTA comparison.
  • jev-routing-experiment - Benchmarking TypeSafe's Jev decision model as a cost-efficient LLM router on RouterArena.
  • jev-synergy-screening - Jev (TypeSafe System One) × ASReview SYNERGY abstract screening demo — Choice/Noul vs gold labels.
  • jev-web-analyzer (site) - See what Jev thinks about your SaaS website — powered by ReplyNodes web context and Vercel AI Gateway.
  • jevarena (chenmingtang830) (site) - Open-source BYOK arena for Jev and other AI judges. Find failures, compare quality, cost, and latency.
  • jevchess (site) - Jev, TypeSafe's System One model, plays chess against any OpenRouter LLM, Stockfish and you. One-page web app with live moves, Jev's move probabilities, saved games and win rates.
  • kyotsu-ai-bench - AI benchmark on Japan's 2026 Common Test: Jev vs luna-none vs luna-low (static dashboard).
  • modelsystem (site) - Curated catalog of System One / Decision Models — contributions for modelsystem.one.
  • openjev-experiments (site) - Experiments with openjev, an open Jev-style option-logit runner, on local models.
  • padflow-jev-evals - Typed-decision benchmark from PadFlow (land development SaaS): schemas, anonymized labeled rows, and a runner for confidence-calibrated models like TypeSafe Jev.
  • RISC-jeV - I tortured Jev into being a RISC-V CPU.
  • typesafe-vs-deepseek (site) - TypeSafe (Jev) vs DeepSeek-flash: side-by-side speed/token/cost/accuracy comparison across invoice extraction, email classification, and reranking.
  • FinancialPredictionJev - Using Jev to test how well it predicts financial markets(just like most llms as of september 2026, it doesnt do that good).
  • jev-alpha-bench - Does Jev predict stock returns from news? It reads the news well; there is no tradeable alpha. Three arms separate reading from recall.
  • jev-anotacao-sentencas (site) - Jev (TypeSafe) vs. Gemini 3.8 Flash vs. GPT-5.6 Luna na anotação estruturada de sentenças do TJSP: qualidade, tempo e custo.
  • jev-deferred-crispification - 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).
  • jev-finance-benchmark - Typesafe.ai model jev finance benchmark.
  • jev-headline-bench - 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.
  • jev-jp-address - 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.
  • jev-lab - TypeScript experiments, evaluations, and latency benchmarks for TypeSafe's Jev model.
  • jev-pick-and-place-study - A small reproducible MuJoCo pilot comparing Jev, Claude Haiku, and reactive rules for pick-and-place.
  • jev-playground (hegargarcia) - Benchmarks Jev against other evaluation models in games with explicit states, legal actions, and measurable outcomes.
  • jev-report - 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.
  • jev-secret-detection (post) - Measures how well TypeSafe's RLCD-Jev model spots real secret credentials in file snippets.
  • jev-shadcn-lint-eval - A small second eval for shadcn-ui/lint that uses TypeSafe's Jev to judge the linter's own output.
  • jev-spam-eval - Zero-shot spam filtering with TypeSafe Jev Noul questions, compared with TF-IDF baselines.
  • jev-trace-classifier - 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.
  • misereru-slide-jev (site) - Ongoing Japanese research deck on Jev and System One models, maintained as Markdown slides.
  • Parallel Constrained Decoding (Qwen2.5-1B-RLCD) - Hugging Face Space exploring open-source parallel constrained decoding as an alternative to Jev.
  • PocketJev - On-device iPhone visual decision tool using MLX and Qwen3-VL direct option logits.
  • shade-arena-jev-monitor - Evaluating TypeSafe's Jev as a fast monitor and action gate for agent sabotage in SHADE-Arena, compared with Gemini 2.5 Flash/Pro.
  • system-one-adapter-rust - Rust port of TypeSafe system-one-adapter (LLM-backed system_one evaluations).
  • thaiexam-jev-charts - Charts: TypeSafe Jev evaluated on Thai standardized exams vs 110 other models.
  • Typesafe_chess_eval - 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.
  • typesafe-oracles - Evaluating TypeSafe's System One primitives (Choice/Score/Noul) — where a typed oracle beats an LLM call.

Other lists

Other curated lists.

  • awesome-jev (yibie) - A curated list of public projects, integrations, and discussions built on Jev — TypeSafe AI's System One model for typed decisions.
  • awesome-jev-tools - A curated list of tools built for Jev — TypeSafe AI's System One model for typed decisions.
  • awesome-typesafe (site) - Curated list of official resources and community projects for TypeSafe, System One models, and Jev, with a GitHub Pages site.
  • awesome-jev - A curated, source-backed list of projects built with Jev, TypeSafe AI's System One model for typed decisions.
  • awesome-jev (fatwang2) - A source-backed Jev project directory with a reusable Jev-only GitHub review workflow.
  • awesome-jev-projects (site) - Awesome Jev: source-backed open-source ecosystem radar, plain-language project discovery, and automatic GitHub sync.
  • awesome-jev (AnotiaWang) (post) - A curated list of awesome Jev / TypeSafe System One applications, libraries, and resources.
  • awesome-jev (OmniJev) (site) - Papers, open reproductions and independent evaluations behind System One models and Jev.
  • awesome-jev-typesafe (site) - Typed decisions with TypeSafe's Jev, the first System One model.
  • awesome-jev (AppitStudio) - Curated Jev resources and runnable examples for typed AI decisions.
  • awesome-jev (kraayenjon) (site) - A curated list of Jev use cases, projects, SDKs, and resources. Jev is TypeSafe AI's System One model for fast, typed decisions in software — Choice, Score, and Noul with calibrated probabilities.
  • jev-skill - An awesome collection of Jev use cases, workflows, and agent skills.
  • awesome-jev-zh (site) - Jev / TypeSafe System One 中文精选列表：官方资料、SDK、爆款应用、Agent 工具、开源复现与独立评测，附中文上手指南，每日自动收录 GitHub 热门项目。
  • jev-hub (site) - JEV HUB · X 上关于 TypeSafe AI「系统一模型」Jev 的长文与演示视频聚合（保留原链与作者）｜ 谁是专家 出品.
  • awesome-jev (heyjunpenn) (site) - A verified, community-maintained catalog of 485 open-source projects built with Jev.
  • awesome-jev-usecases (site) - Evidence-backed index of real-world Jev (TypeSafe AI System One) use cases: repos, patterns, benchmarks, and measured results.
  • fable-jev - ⚡ Sub-100ms cognitive reflexes for autonomous coding agents. Powered by TypeSafe AI's Jev & get-fable.
  • awesome-jev (Frank-ZY-Dou) - Public examples of Jev used for robot control, 3D modeling and adjacent control tasks, with sources and archived media.
  • awesome-jev-usecases (aliaihub) - Evidence-backed use cases, patterns, and guidance for building with Jev, TypeSafe AI's System One model. Every claim is labeled and sourced.
  • jev-radar - 📡 全网最全 · The world's most comprehensive tracker of the Jev (TypeSafe AI System One) ecosystem — 220+ documented cases · 108 confidence-graded entries · verified & rescanned every 3 hours · API access guide included.
  • awesome-jev (ckaraca) - A curated list of tools, integrations, and experiments built on Jev, TypeSafe AI's System One model for fast, typed decisions.

Articles & threads

Coverage, write-ups, and X threads.

Contributing

Pull requests welcome. Edit data/projects.json (it drives both this README and the site) and run npm run build. See CONTRIBUTING.md for the entry format and inclusion criteria.

License

CC0 1.0. Maintained by Gumbo.