TypeSafe steps out of stealth
TypeSafe’s official launch announcement introduces the lab and points builders to Jev. It includes Diogo Almeida’s launch film and original introduction.
A FIELD GUIDE TO JEV / VOL. 01
The best of Jev. Real projects, practical guides and ideas from across the internet.
TypeSafe’s official launch announcement introduces the lab and points builders to Jev. It includes Diogo Almeida’s launch film and original introduction.
Diogo Almeida introduces Jev, TypeSafe’s structured decision model. Watch the launch film and explore the original thread for the model’s approach, examples and author-reported performance.
TypeSafe highlights Jev’s typed-output approach: applications provide state and questions, then act on probabilities, choices or scores. The linked announcement also covers the Venice API integration.
x.comAnswers your code can useExplore this project ↗TypeSafe announces public access to Jev without a waiting list. The official console is the starting point for trying typed decisions in your own application.
x.comJev opens to everyoneExplore this project ↗Four official signals. A fresh starting point on each visit.
107 resources
AI-assisted summaries and translations. Check original sources for context and performance claims.
Official sync and async Python client. pip install typesafe-sdk.
github.comtypesafe-ai/typesafe-sdk-pythonExplore this project ↗Source-linked curation
Published eval methodology and per-model results for System One workflows.
evals.typesafe.aiWorkflow evalsExplore this project ↗Source-linked curation
Launch post: architecture, RLCD training, pricing, Doom and Wikiracing demos, FAQ.

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Official TypeSafe reference: Introduction.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Reproducible recipes: parallel questions, reranking, guardrails, citation checks, extraction, hierarchical classification.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Official interactive demo of speculative fan-out: many questions in one call, code keeps the relevant answers.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Shortest path from an API key to a typed decision.

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Paste a state, add questions, and see typed answers in the browser.
console.typesafe.aiPlaygroundExplore this project ↗Source-linked curation
The case for machine-native intelligence built for software, not conversation.
typesafe.aiManifestoExplore this project ↗Source-linked curation
Product and research updates.
x.com@typesafeai on XExplore this project ↗Source-linked curation
Request and response contract for POST /v1/systemone.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Choice, Score, and Noul: the three question types and what they return.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Known failure modes of the current public model, documented by TypeSafe.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Introduction, primitives, patterns, cookbooks, HTTP API, and SDK references.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Official TypeSafe server. Builder demos live in the Show and Tell channel.
discord.ggDiscordExplore this project ↗Source-linked curation
Speculative fan-out, confidence-gated routing, composite scoring, and intent routing.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
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.
github.comnshkrdotcom/typesafe_sdkExplore this project ↗Source-linked curation
A Go client for the TypeSafe API, aimed at developer tools and applications.

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Curated list of official resources and community projects for TypeSafe, System One models, and Jev, with a GitHub Pages site.

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A community guide outlining 10 steps to implement Jev for faster decision-making in AI agent systems.
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A setup using Jev and GrokBot to route AI agent tasks efficiently, reducing costs and execution time with a seven-step configuration process.
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Official agent skill for Claude Code, Codex, and compatible agents: primitives, patterns, and how to structure evaluations.

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TypeSafe announces public access to Jev without a waiting list. The official console is the starting point for trying typed decisions in your own application.
x.comJev opens to everyoneExplore this project ↗Source-linked curation
Fazt presenta las decisiones estructuradas de Jev con ejemplos de Snake y clasificación de solicitudes de soporte.
YouTube · Explore this projectSource-linked curation
Official drop-in TypeSafeClient replacement backed by OpenAI, Anthropic, and compatible LLM APIs, for comparing Jev against chat models.
github.comtypesafe-ai/system-one-adapter-pythonExplore this project ↗Source-linked curation
A community post about using Jev to efficiently crawl job listings from company websites, significantly reducing time compared to an LLM.
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Official TypeSafe reference: Re-ranking.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Unofficial Elixir SDK for the TypeSafe AI API.
github.comtypesend/typesafe_aiExplore this project ↗Source-linked curation
Official TypeSafe reference: Date extraction.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
An unofficial Laravel package offering typed responses and test fakes for Jev integration.

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Jev differs from LLMs by evaluating predefined decisions directly, enabling parallel processing of independent questions.
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Unofficial Go SDK for TypeSafe AI's Jev API.
github.comguillemus/jev-goExplore this project ↗Source-linked curation
Official TypeSafe reference: Usage.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
TypeSafe’s official launch announcement introduces the lab and points builders to Jev. It includes Diogo Almeida’s launch film and original introduction.
Source-linked curation
Official TypeSafe reference: Pre-parsed value extraction.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
TypeSafe highlights Jev’s typed-output approach: applications provide state and questions, then act on probabilities, choices or scores. The linked announcement also covers the Venice API integration.
x.comAnswers your code can useExplore this project ↗Source-linked curation
Unofficial typed async Rust client for the TypeSafe System One API.
github.comJedimEmO/typesafe-clientExplore this project ↗Source-linked curation
Diogo Almeida introduces Jev, TypeSafe’s structured decision model. Watch the launch film and explore the original thread for the model’s approach, examples and author-reported performance.
Source-linked curation
Official TypeSafe reference: Example use cases.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
TypeSafe の Jev を TypeScript SDK で使ってみる最初の 1 歩.
github.comheiwa4126/jev-bun1Explore this project ↗Source-linked curation
Official TypeSafe reference: Client SDKs.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Official TypeSafe reference: State.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
System-architecture skill for TypeSafe AI Jev/System One — find fuzzy semantic judgment and turn it into small Choice/Score/Noul primitives.
github.comsamtay32/jev-system-architectExplore this project ↗Source-linked curation
Official TypeSafe reference: Speculative fan-out.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Official TypeSafe reference: System One.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Official TypeSafe reference: Hierarchical classification.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
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.
github.comrorshopping/jev-on-a-laptopExplore this project ↗Source-linked curation
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.
github.comvalksor/typesafe-sdk-goExplore this project ↗Source-linked curation
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.
github.comvalksor/typesafe-sdk-phpExplore this project ↗Source-linked curation
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。
github.comyzfly/awesome-jev-zhExplore this project ↗Source-linked curation
Typesafe AI SDK in Elixir using Req.
github.comvinnie357/typesafe_sdk_exExplore this project ↗Source-linked curation
Guía del creador Fazt sobre el uso de Jev para decisiones tipadas, con una introducción y ejemplos de aplicaciones.
fazt.devJev de TypeSafe AI: guía de decisiones estructuradasExplore this project ↗Source-linked curation
Unofficial TypeSafe Jev showcase — System One decisions, not chat.
github.comcobusgreyling/JevExplore this project ↗Source-linked curation
Third-party write-up of the System One primitives, pricing, and vendor workflow evals.
www.datacamp.comJev: System One models explained (DataCamp)Explore this project ↗Source-linked curation
Official TypeSafe reference: Demos.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
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.
github.comhellogumbo/should-ai-kill-us-allExplore this project ↗Source-linked curation
Community Java client for the TypeSafe System One API (unofficial).
github.comPremo-Cloud/typesafe-sdk-javaExplore this project ↗Source-linked curation
Leonardo Bissoli apresenta decisões estruturadas com Jev, incluindo confiança, limites e exemplos de uso em aplicações.
YouTube · Explore this projectSource-linked curation
Official TypeSafe reference: Knowledge graph entity alignment.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Official TypeSafe reference: API reference.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Evaluating TypeSafe's System One primitives (Choice/Score/Noul) — where a typed oracle beats an LLM call.
github.comtrophee-bot/typesafe-oraclesExplore this project ↗Source-linked curation
Official TypeSafe reference: Guardrails for LLMs.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
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.
github.comsmasato/jev-jp-addressExplore this project ↗Source-linked curation
Official TypeSafe reference: Choice.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Official TypeScript/JavaScript client with inferred answer types. npm install @typesafe-ai/sdk.
github.comtypesafe-ai/typesafe-sdk-jsExplore this project ↗Source-linked curation
Official TypeSafe reference: Function calling.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
Official TypeSafe reference: AI primer.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
LegalForecast-MTD benchmark alpha and official evaluation workflows.
github.comjohnhughes3/LegalForecastBenchExplore this project ↗Source-linked curation
Página do criador Leonardo Bissoli com seu vídeo, capítulos e referências sobre decisões estruturadas com Jev.
leonardobissoli.comJev: decisões estruturadas e casos de usoExplore this project ↗Source-linked curation
Jev assists a Mac app by selecting relevant support articles from built-in documentation.
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Official TypeSafe reference: Agent skill.
docs.typesafe.aiSTATE → DECISION → CODEExplore this project ↗Source-linked curation
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.
github.comxingwudao/OpenJevExplore this project ↗Source-linked curation